SY80704SYC - 2.4MHz, 4A Sync Buck

Features

2 . 5 { ~ } 6 . 0 \mathsf { V } Input Voltage Range
2 3 \mu \ A Low Quiescent Current
Low { \sf R } _ { \sf D S ( O N ) } for Internal Switches (Top/Bottom)
25mΩ /17mΩ
Instant PWM Control Achieve Ultra Fast Dynamic
Response
2.4MHz Switching Frequency Minimizes the
External Components
Internal Soft-start Limits the Inrush Current
100 % Drop Out Operation
Output Auto Discharge Function
Hiccup Mode for Short Circuit Protection
RoHS Compliant and Halogen Free
Compact Package: DFN2x2-7

Applications

Set Top BoxUSB DongleMedia PlayerSmart Phone

SY8035DBC/SY8805ADFC/SY8806DFC/SY8809DFC/SY8809EDFC/

SY8825QUC - Ultra Low Quiescent Current

Features

Input Voltage Range: SY8035: 2.7V to 5.5V SY8805A/SY8806/SY8809: 3V to 5.5V SY8825: 2.5V to 5.5V  SY8035/SY8805A:1MHz Switching Frequency SY8806/SY8809:1.3MHz Switching Frequency SY8825:2MHz Switching Frequency  SY8035/SY8805A/SY8806:5A Maximum Output Current SY8825/SY8809:6A Maximum Output Current  Peak Current Mode Control for the Fast Transient Speed + 100 % Drop Out Function  Typical Quiescent Current： SY8805A/SY8806/SY8809:100µA \mathsf { S Y B 8 2 5 : 1 8 \mu A } Low \mathsf { R } _ { \mathsf { D S ( O N ) } } for Internal Switches (PFET/NFET): SY8805A/SY8806/SY8809:35mΩ/15mΩ SY8035: 45mΩ/35mΩ SY8825:55mΩ/35mΩ  SY8805A/SY8809:OVP/OCP/UVLO/OTP Protections  SY8825: Hic-cup Mode Protection for Hard Short Conditi  RoHS Compliant and Halogen Free

Compact Package:
SY8035: DFN22-8
SY8805A/SY8806/SY8809: DFN22-8
SY8825: QFN2x1.5-8

Applications

Set Top Box
Net PC
Mini-Notebook PC
Access Point Router

SY80706SYC - 1MHz, 6A Sync Buck

Features

Applications

2 . 5 { ~ } 6 . 0 \lor Input Voltage Range
2 3 \mu \ A Low Quiescent Current
Low RDS(ON) for Internal Switches (Top/Bottom)
22mΩ /12mΩ
Instant PWM Control Achieve Ultra Fast Dynamic
Response
1.0MHz Switching Frequency Minimizes the
External Components
Internal Soft-start Limits the Inrush Current
100 % Drop Out Operation
Output Auto Discharge Function
Hic-cup Mode for Short Circuit Protection
RoHS Compliant and Halogen Free
Compact Package: DFN2x2-7

Set Top BoxUSB DongleMedia PlayerSmart Phone

SY8036DBC/SY8036LDBC/SY8036HDBC/SY8036ZDBC

- 5.5V/6A Sync Buck

Features

Applications

Low { \sf R } _ { \sf D S ( O N ) } for Internal Switches (Top/Bottom):
SY8036:35mΩ/15mΩ
SY8036L:40mΩ/30mΩ
SY8036HS/Y8036Z:36mΩ/28mΩ
Input Voltage Range: 2.7-5.5V
SY8036/SY8036L: 1 MHz SY8036H: 1.1 MHz SY8036Z: 1.2 MHz
Switching Frequency Minimizes External Components
External Adjustable Soft-start Limits the Inrush Current
100 % Dropout Operation
Power Good Indicator
RoHS Compliant and Halogen Free
Compact Package: DFN3x3-10
LCD TV
Access Point Router
Notebook PC
Server

Features

Low \mathsf { R } _ { \mathsf { D S ( O N ) } } for Internal Switches (Top/Bottom):
3 8 / 1 5 ~ { m } \dot { \Omega }
2.7-6.5V Input Voltage Range
1.2 MHz Switching Frequency Minimizes the
External Components
Internal Soft-start Limits the Inrush Current
Up to 9 4 % Efficiency
6A Continuous Output Current Capability
Shutdown Mode Draws { < } 0 . 1 \mu \mathsf { A } Supply Current
100 % Dropout Operation
Power Good Indicator
OCP/UVLO/OTP Protections
RoHS Compliant and Halogen Free
Compact Package: DFN2x2-8

Applications

High definition Set Top Box
LCD TV
Notebook PC

SY8876DFC - 6.5V, 6A, 1.2MHz Synchronous Step Down Regulator

Features

Low RDS(ON) for Internal Switches (Top/Bottom): 38/15 mΩ
2.7-6.5V Input Voltage Range
1.2 MHz Switching Frequency Minimizes the External Components
Internal Soft-start Limits the Inrush Current
Up to 9 4 % Efficiency
6A Continuous Output Current Capability
Shutdown Mode Draws { < } 0 . 1 \mu \mathsf { A } Supply Current
100 % Dropout Operation
Power Good Indicator
OCP/UVLO/OTP Protections
RoHS Compliant and Halogen Free
Compact Package: D F N 2 x 2 - 8

Applications

High Definition Set Top Box
LCD TV
Notebook PC

SY8037x - 600kHz, 6A /5.5V Sync Buck with 2-bit VID Programming

Features

Applications

• Low RDS(ON) for internal switches (top/bottom): 40/35mΩ
• 2.7-5.5V input voltage range
• 6 0 0 ~ \mathsf { k H z } switching frequency minimizes the external components
• Internal softstart limits the inrush current
• Two-bit VID output voltage programming
• Power good indicator
• RoHS Compliant and Halogen Free
• Latch off OVP: SY8037B/C auto-recovery OVP: SY8037/A
• Compact package: DFN3x3-12

Notebook/PC Server

VID programming Table

SY8827EPKC/SY8827FPKC/SY8827GPKC/SY8827KPKC/ SY8827NPKC/SY8827PPKC/SY8827QPKC/SY8827RPKC

-I2C Programmable, with \mathsf { V } _ { \mathsf { O U T } } Remote Sense Sync Buck

Features

Input Voltage Range: 2.5V to 5.5V(SY8827E, SY8827F) 2.6V to 5.5V(SY8827K, SY8827G , SY8827N, SY8827P, SY8827Q, SY8827R)
 2.4 MHz/1MHz(SY8827Q)Switching Frequency Minimizes the External Components
 Typical Quiescent Current: 65uA(SY8827E, SY8827F, SY8827G , SY8827N , SY8827P, SY8827Q, SY8827R) 75uA(SY8827K)
 Low \mathsf { R } _ { \mathsf { D S ( O N ) } } for Internal Switches (PFET/NFET): 28mΩ/17mΩ
 Programmable Output Voltage: 0.6V to 1.3875V in 12.5mV Steps(SY8827E, SY8827F, SY8827G , SY8827N, SY8827P) 0.6V to 1.08V in 10mV Steps(SY8827Q) 0 . 6 \mathsf { V } to 0.98V in 10mV Steps(SY8827R) 0.7125V to 1.5V in 12.5mV steps(SY8827K)
 6A Continuous Output Current Capability.
 Capable for 0 . 3 3 \mathsf { u } \mathsf { H } or 0.25uH(ONLY FOR SY8827K) Inductor and 22uF Ceramic Capacitor. 0 . 4 7 \mu { H } Inductor and 4 4 \mu \ F Ceramic Capacitor(SY8827Q, SY8827R) Hic-cup Mode Protection for Hard Short Condition

RoHS Compliant and Halogen Free Compact Package: CSP 1 . 5 6 ^ { \star } 1 . 9 6 { - 2 0 }

Applications

Smart-phoneWeb-tabletsIP TV(SY8827E)

SY8810QQC/SY8810LQQC - 12A, 1.5MHz, I2C Programmable, with \mathsf { V } _ { \mathsf { O U T } } Remote Sense Synchronous Step Down Regulator

Features

Applications

2.7V to 5 . 5 \mathsf { V } Input Voltage Range
Pseudo-constant Frequency: 1.5MHz
Low RDS(ON) for Internal Switches (Top/Bottom): 12mΩ/6mΩ
Programmable Output Voltage: 0.6V to 1.5V in 1 0 \mathsf { m V } Steps
12A Continuous, 15A Peak Load Current Capability
Capable for 0 . 2 5 \mu \ H Inductor and 2 { x } 2 2 { \mu } \mathsf F Ceramic Capacitor
PFM/PWM Operation for Optimum Increased Efficiency
Remote Sensing at Point of Load Side
2 Different I2C Address Selectable
I2C Interface Support 100kHz Standard Mode and 400kHz Fast Mode
Thermal Shutdown with Auto Recovery

RoHS Compliant and Halogen Free Compact Package: QFN3x3-12

Smart-phone Web-tablets

Dual Output Step Down (Buck) Converter \mathsf { V } _ { \mathsf { I N } } Max < 7V

SY8092ADBC - 5.5V, Dual 1A, 2MHz Sync Buck Features

•Input range: 2 . 5 \mathsf { V } to 5.5V
•2MHz switching frequency
* 1 8 0 ^ { \circ } out of phase operation
•Output current: 1A per channel
* + / - 1 % DC output voltage accuracy at forced PWM mode
•Low Quiescent Current: < 3 5 \mathsf { u A } when both channels are enabled
•Low \mathsf { R } _ { \mathsf { D S ( O N ) } } for internal switches (PFET/NFET): 220mΩ/180mΩ
•Internal softstart
* 1 0 0 % dropout operation
•RoHS Compliant and Halogen Free
•Compact package: DFN3x3-10

Applications

SSD
Cell Phones
Digital Cameras
PDAs
Portable Media Players

SY8831AIC - Dual 1A, 1.5MHz Sync Buck

Features

2.5V to 5.5V Input Voltage
1.5MHz Switching Frequency
1 8 0 ^ { \circ } Out of Phase Operation
Output Current: 1A per Channel
Quiescent Current: Typical 5 5 \mu \ A for both Channels
Low RDS(ON) for Internal Switches (PFET/NFET):
2 6 0 { m } \Omega / 1 8 0 { m } \Omega
Internal Soft-start
100 % Dropout Operation
RoHS Compliant and Halogen Free
Compact Package: TSOT23-8

Applications

SSD
Cell Phones
Digital Cameras
PDAs
Portable Media Players

SY8832AIC - Dual 2A, 2MHz Sync Buck

Features

2 . 5 \mathsf { V } to 5 . 5 \mathsf { V } Input Voltage
2MHz Switching Frequency
1 8 0 ^ { \circ } ° Out of Phase Operation
Output Current: 2A per Channel
Low Quiescent Current: < 4 5 \mu \mathsf { A } for Both Channels
Low \mathsf { R } _ { \mathsf { D S ( O N ) } } for Internal Switches (PFET/NFET):
1 2 5 { m } \Omega / 1 0 0 { m } \Omega
Internal Soft-start
100 % Dropout Operation
RoHS Compliant and Halogen Free
Compact Package: TSOT23-8

Applications

SSD
Cell Phones
Digital Cameras
PDAs
Portable Media Players

SY8024DCC - Dual 3A, 1.5MHz Sync Buck

Features

Applications

Low R _ { \mathsf { D S ( O N ) } } for internal switches (top/bottom): 105/85mΩ 2.7-5.5V input voltage range 1.5MHz switching frequency minimizes the external components Internal soft-start limits the inrush current 100 % dropout operation RoHS Compliant and Halogen Free Compact and thermally enhanced package: DFN3x3-12

WiFi Card
LCD TV
GPS
Access Point Router
Smart Phone

SY8821SAC - Dual 1A/1.5A, 2MHz Sync Buck

Features

Input Range: 2 . 5 \mathsf { V } to 5.5V Input Voltage
2MHz Switching Frequency
1 8 0 ^ { \circ } out of Phase Operation
Output Current: 1.0A for Channel 1 1.5A for Channel 2
Low Quiescent Current: < 4 5 \mathsf { u A } for both channels
Low \mathsf { R } _ { \mathsf { D S ( O N ) } } for Internal Switches (PFET/NFET):
1 2 5 { m } \Omega / 1 0 0 { m } \Omega
Internal soft-start
100 % Dropout Operation
RoHS Compliant and Halogen Free
Compact Package: DFN2x1.5-8

Applications

SSD
Cell Phones
Digital Cameras
PDAs
Portable Media Players

SY8821BSAC - Dual 1A, 2MHz Sync Buck

Features

2.3V to 5 . 5 \mathsf { V } Input Voltage
2MHz Switching Frequency
1 8 0 ^ { \circ } Out of Phase Operation
Output Current: 1.0A for Each Channel
Low Quiescent Current: Typical 4 5 \mu \mathsf { A } for Both Channels
Low RDS(ON) for Internal Switches
(PFET/NFET): 1 2 5 { m } \Omega / 1 0 0 { m } \Omega
Internal Soft-start
100 % Dropout Operation
RoHS Compliant and Halogen Free
Compact Package: DFN2x1.5-8

Applications

SSD
Cell Phones
Digital Cameras
PDAs
Portable Media Players

Single Output Step down (Buck) Converter VIN Max ≥ 7V

Single Output Step down (Buck) Converter VIN Max ≥ 7V

Single Output Step down (Buck) Converter VIN Max ≥ 7V

Single Output Step down (Buck) Converter VIN Max ≥ 7V

Single Output Step down (Buck) Converter VIN Max ≥ 7V

Single Output Step down (Buck) Converter VIN Max ≥ 7V

Single Output Step down (Buck) Converter VIN Max ≥ 7V

Single Output Step Down (Buck) Converter, \mathsf { \mathbf { V } } _ { \mathsf { I N } } Max >7V (Temp Range \yen 40 to 1 2 5 ^ { \circ } C )

SQ27000SXC/SQ27000BSXC/SQ27002SXC/SQ27000FCC/SQ27001FCC

- High Efficiency, 0.6A/1A, 100V Input Sync Buck

Features

Wide Input Voltage Range: 7-100V
Internal 500mΩ Main Switch and 2 8 5 \mathsf { m } \Omega Synchronous Switch
0.6A Output Current Capability（SQ27000x, SQ27002)
1A Output Current Capability(SQ27001)
COT Ripple-Based Control to Achieve Fast Transient Responses
Programmable Switching Frequency Range:
200kHz\~1MHz(SQ27000/2/BSXC) 200kHz\~600kHz (SQ27000/1FCC)

2ms Internal Soft-start Limits the Inrush Current

Accurate Feedback Set Point: 1 . 2 2 5 \mathsf { V } ± 2 % Cycle-by-cycle Peak/Valley Current Limit Cycle-by-cycle Reverse Current Limit Auto Recovery for Over Temperature (OTP) RoHS Compliant and Halogen Free Compact Package DFN4 x 4 -8(SXC) / SO8E(FCC)

Applications

Isolated Telecom Bias Supply Secondary High Voltage Post Regulator Automotive Systems

SQ27403FCA - High Efficiency Fast Response, 3.5A, 40V Input Sync Buck

Features

Low R _ { \mathsf { D S ( O N ) } } for Internal Switches (Top/Bottom): 115/80mΩ
4.2-40V Input Voltage Range
Internal Compensation
Internal 1ms Soft-start Limits the Inrush Current
Adjustable Switching Frequency Range: 300kHz to 2.2MHz
3.5A Output Current Capability
± 2 % 0 . 6 \mathsf { V } Reference Over - 4 0 ^ { \circ } \mathsf { C } ~ 1 0 5 ^ { \circ } \mathsf { C }
Cycle-by-cycle Peak Current Limitation
Short Circuit Protection
Thermal Shutdown and Auto Recovery
RoHS Compliant and Halogen Free
Compact Package: SO8E

Applications

Industrial High-Voltage DC/DC Converters

SQ27506XNQ

- High Efficiency, 36V Input, 6A Synchronous Step-Down Regulator

Features

3 . 5 \mathsf { V } to 36V Input Voltage Range
6A Output Current Capability
Low RDS(ON) for Internal Switches: 41mΩ Top, 21mΩ Bottom Typical 1 1 . 5 \mu \ A Quiescent Current and 1 \mu \mathsf { A } Shutdown Current. 300kHz to 2.3MHz Switching Frequency
Synchronization to External Clock
Spread Spectrum Function
Hiccup Mode Output Short-Circuit Protection
EN On/Off Control with Accurate Threshold
Cycle-by-Cycle Peak Current Limit
Power Good Indicator
1 v ± 1 % Reference Voltage Over - 4 0 ^ { \circ } \mathsf { C } to \mathsf { 1 2 5 ^ { \circ } C } Temperature Range { \sf Q F N 3 . 5 } { x 4 - 1 4 } Package

Applications

Industrial High Voltage DC/DC Converters

SQ20953AIC

- High Efficiency Fast Response, 3A, 30V Input Sync Buck

Features

Low R _ { \mathsf { D S ( O N ) } } for Internal Switches (Top/Bottom): 110/70 mΩ
4.5-30V Input Voltage Range
Internal Compensation
Internal 1ms Soft-start Limits the Inrush Current
Adjustable Switching Frequency Range: 500kHz to 2.5MHz
3A Output Current Capability
1 . 5 % 0 . 6 \mathsf { V } Reference
Low Quiescent Current
Cycle-by-cycle Peak Current Limit
Short Circuit Protection
Thermal Shutdown and Auto Recovery
RoHS Compliant and Halogen Free
Compact Package: TSOT23-8

Applications

LCD-TV
SetTop Box
Notebook
Storage
High Power AP Router
Networking

SQ27692FCC

- High Efficiency, 60V Input, 2A Asynchronous Step Down Regulator

Features

Low R _ { \mathsf { D S ( O N ) } } for Internal N-channel Power FET (TOP):175mΩ
4.5-60V Input Voltage Range
2A Output Current Capability
Adjustable Switching Frequency Range: 100kHz to1MHz
Internal Soft-start Limits the Inrush Current
Hic-cup Mode Output Short Circuit Protection
EN ON/OFF Control with Accurate Threshold
Cycle-by-cycle Peak Current Limit
0 . 8 \mathsf { V } ± 1 % Reference Voltage Accuracy
Compact Package: SO8E

Applications

Non-isolated Telecommunication Buck Secondary High Voltage Post Regulator Automotive Systems
Electric Bicycle

SQ27693FCP - High Efficiency, 60V Input, 3.5A Asynchronous Step Down Regulator

Features

Applications

Wide Input Voltage Range: 4 . 5 \mathsf { V } ~ 6 0 \mathsf { V }
Output Current Capability: 3.5A
Low R _ { \mathsf { D S ( O N ) } } for Internal N-channel Power FET(TOP): 95mΩ
Accurate Feedback Set Point: 0 . 8 \lor ± 1 % from - 4 0 ^ { \circ } \mathsf { C } to \mathsf { 1 2 5 ^ { \circ } C }
Adjustable Switching Frequency: 100kHz to 2500kHz
High Efficiency at Light Loads with Pulse Skipping Mode
Cycle by Cycle Peak Current Limit Protection
Automatic Recovery for UVLO, OVP and OTP Conditions
Hiccup Mode for UVP Condition
Compact Package: SO8E
5G AAU/RRU
Industrial
High-Voltage DC-DC Converters

SQ29004RHQ

- High Efficiency, 2.0MHz, 4A Synchronous Step Down Regulator

Features

5.2V to 18V Input Voltage Range
Low R _ { \mathsf { D S } ( \mathsf { O N } ) } for Internal Switches (Top/Bottom):
5 0 \mathsf { m } \Omega / 2 5 \mathsf { m } \Omega
High Switching Frequency 2.0MHz Minimizes the
External Components
7 5 \mu \ A Operating Quiescent Current
Power Good Indicator
Power Save Mode for Light Load Efficiency
Reliable Protection Mode: Auto-recovery Mode for
UVLO, UVP, OTP
Cycle-by-cycle Valley Current Limit and Peak Current
Limit
Programmable Soft-start
RoHS Compliant and Halogen Free
Compact Package: QFN2.5x2.5-16

Applications

Server and Data-center

SQ20056RAC - High Efficiency Fast Response 6A, 23V Input Sync Buck

Features

Applications

Low RDS(ON) for Internal Switches (Top/Bottom): 38/19 mΩ
Wide Input Voltage Range: 4-23V
Instant PWM Architecture to Achieve Fast Transient Respo
Internal 1.3ms Soft-start Limits the Inrush Current
Pseudo-constant Frequency: 600kHz
6A Output Current Capability
± 1 % Internal Reference Voltage
PFM/PWM Selectable Light Load Operation Mode
Optional Bypass Input
Power Good Indicator
Output Discharge Function
Output Current Limit Protection
Hiccup Mode Output Short Circuit Protection
Output Over Voltage Protection
Input UVLO
Over Temperature Protection with Auto Recovery
RoHS Compliant and Halogen Free
Compact Package: QF N 3 x 3 - 2 0
LCD-TV/Net-TV/3DTV
Set Top Box
Notebook
High Power AP

SQ27695TOD

- High Efficiency, 60V Input, 5A Asynchronous Step Down Regulator

Features

Applications

Wide Input Voltage Range: 4 . 5 \mathsf { V } ~ 6 0 \mathsf { V }
Output Current Capability: 5A
Low RDS(ON) for Internal N-Channel Power FET (TOP): 95mΩ
Accurate Feedback Set Point: 0 . 8 \lor ± 1 % from \angle 4 0 ^ { \circ } \mathsf { C } to \mathsf { 1 2 5 ^ { \circ } C }
Adjustable Switching Frequency: 100kHz to 2500kHz
High Efficiency at Light Loads with Pulse Skipping Mode
Cycle by Cycle Peak Current Limit Protection
Automatic Recovery for UVLO, OVP and OTP Conditions
Hiccup Mode for UVP Condition
Internal and Adjustable Soft-Start Limits Inrush Current
Power Good Output Monitor for Under-Voltage and Over-Voltag
Compact Package: DFN4 x 4 -10
5G AAU/RRU
Industrial
High-Voltage DC-DC Converters

SQ29066WYQ/SQ29066BWYQ/SQ29063WYQ/SQ29063BWYQ/

SQ29066EWYQ - High Efficiency, 16V/6A Sync Buck

Features

Applications

Wide Input Voltage Range:

\blacktriangleright 2.85V to 16V if VCC is Supplied by External Source
 3.6V to 16V if VCC is Supplied by Internal LDO
Internal 2 2 . 1 \mathsf { m } \Omega Power Switch and 8 . 1 { m } \Omega Synchronous Rectifier
± 1 % Reference Voltage Over \angle 4 0 ^ { \circ } \mathsf C to + 1 2 5 ^ { \circ } \mathsf C Junction
Temperature Range
Instant-PWM™ Provides Fast Transient Response
660kHz, 1100kHz and 2200kHz Operating Frequency
660kHz and 1100kHz Operating Frequency(SQ29063WYQ)
Selectable PFM/FCCM Operation
Programmable Valley Current Limit

Reliable Built-in Protections:

 Cycle-by-cycle Valley and Peak Current Limit (OCP)
 Cycle-by-cycle Reverse Current Limit if FCCM is Selected
 Automatic Recovery for Output Over-voltage (OVP) (SQ29066E)
 Latch off for Output Over-voltage (OVP), Output Under-voltage (UVP), Over-temperature (OTP) conditions
 after 32 Consecutive Cycles Valley Current Limit Protection(SQ29063B, SQ29066E)
 Hic-cup Mode after 32/128(SQ29066) Consecutive Cycles Valley Current Limit ProtectionPre-biased Startup

Power Good Indicator

Telecom and Networking Systems
Servers
High Power AP

SQ20058RAC

- High Efficiency Fast Response 8A, 23V Input Sync Buck

Features

Applications

Low R _ { \mathsf { D S ( O N ) } } for Internal Switches (Top/Bottom): 22 mΩ /11
Wide Input Voltage Range: 4 ^ { ~ } 2 3 \vee
Instant PWM Architecture to Achieve Fast Transient Respo
Internal 1.1ms Soft-start Limits the Inrush Current
Pseudo-constant Frequency: 600kHz
8A Output Current Capability
± 1 % Internal Reference Voltage
PFM/PWM Selectable Light Load Operation Mode
Optional Bypass Input
Power Good Indicator
Output Discharge Function
Output Current Limit Protection
Hiccup Mode Output Short Circuit Protection
Output Over Voltage Protection
Input UVLO
Over Temperature Protection with Auto Recovery
RoHS Compliant and Halogen Free
Compact Package: QFN3×3-20
LCD-TV/Net-TV/3DTV
Set Top Box
Notebook
High Power AP

SQ29047WZQ - High Efficiency, 17V/12A Sync Buck

Features

Applications

Wide Input Voltage Range: 4.5-17V
Internal 9 . 8 \mathsf { m } \Omega Power Switch and 4 . 5 \mathsf { m } \Omega Synchronous Rectifier
Accurate Feedback Set Point: 0 . 6 \mathsf { V } ± 1 %
Fast Transient Response
Selectable 400kHz, 800kHz and 1200kHz Operating Frequency
Selectable Automatic High-efficiency Discontinuous Operating
Mode at Light Loads
Selectable Valley Current Limit
Reliable Built-in Protections:
 Automatic Recovery for Input Under-voltage (UVLO), Output Under-voltage (UVP), Output Over-voltage (OVP) and Overtemperature (OTP) Conditions
\blacktriangleright Cycle-by-cycle Valley and Peak Current Limit (OCP)
 Cycle-by-cycle Reverse Current Limit
Internal, Adjustable Soft-Start Limits Inrush Current
Smooth Pre-biased Startup

Power Good Output Monitor for Under-voltage and Over-voltage

Telecom and Networking Systems Servers

SQ29047BWZQ/SQ29047CWZQ

- High Efficiency, 16V/12A Sync Buck

Features

Applications

Wide Input Voltage Range: 4.5-17V
Internal 9 . 8 \mathsf { m } \Omega Power Switch and 4 . 5 \mathsf { m } \Omega Synchronous Rectifier
Accurate Feedback Set Point: 0.6V ± 1 %
Fast Transient Response
Selectable 400kHz, 800kHz and 1200kHz Operating Frequency
Selectable Automatic High-efficiency Discontinuous Operating
Mode at Light Loads
Selectable Valley Current Limit
Reliable Built-in Protections:
Automatic Recovery for Input Under-voltage (UVLO), Output
Under-voltage (UVP), Output Over-voltage (OVP) and Over
temperature (OTP) Conditions
Cycle-by-cycle Reverse, Valley and Peak Current Limit (OCP)
Internal, Adjustable Soft-Start to limit Inrush Current
Smooth Pre-biased Startup
Power Good Output Monitor for Under-voltage and Over-volta

Telecom and Networking Systems Servers

SQ29068TXQ/SQ29069TXQ - High Efficiency, 16V/12A Sync Buck

Features

Applications

Wide Input Voltage Range: Telecom and Networking Systems
2.7V to 16V if VCC is Supplied by External Source Servers
3.6V to 16V if VCC is Supplied by Internal LDO High Power Access Points
Internal 1 3 . 3 ~ \mathsf { m } \Omega Power Switch and 3 . 8 \mathsf { m } \Omega Synchronous Rectifier Storage Systems
Accurate Feedback Setpoint: ± 1 % from \angle 4 0 ^ { \circ } \mathsf { C } to \mathsf { 1 2 5 ^ { \circ } C } Cellular Base Station
Remote Sensing at Point of Load Side
Ultra-Fast Load Transient Response
Selectable 600kHz, 800kHz, and 1000kHz Switching Frequency
Selectable Automatic High Efficiency Discontinuous Operating Mode at Light Loads
Programmable Valley Current Limit
Reliable Built-In Protections:
Automatic Recovery for Input Undervoltage (UVLO)
SQ29068 Latch-Off, SQ29069 Automatic Recovery for Output Undervoltage (UVP) and Overtemperature (OTP)
Conditions
SQ29068 Latch-Off Mode, SQ29069 Hiccup Mode after 32 Consecutive Cycles Valley Current Limit Protection
Cycle-by-Cycle Reverse, Valley, and Peak Current Limit (OCP)
Internal and Adjustable Soft-Start to Limit Inrush Current
Smooth Startup with Pre-Biased VOUT
Output Voltage Tracking
Output Sinking Mode
Power-Good Output Monitor for Undervoltage and Overvoltage

SQ29012VDC/SQ29072TXQ

- High Efficiency, 16V/12A Sync Buck

Features

Wide Input Voltage Range:

2.7V to 16V if VCC is Supplied by External Source
3.6V to 16V if VCC is Supplied by \mathsf { V } _ { \mathsf { I N } }

Internal 1 2 . 6 \mathsf { m } \Omega Power Switch and 4 . 3 \mathsf { m } \Omega Synchronous Rectifier
Accurate Feedback Set Point: 0 . 6 \mathsf { V } ± 1 %
Differential Remote Sense
Fast Transient Response
600kHz, 800kHz and 1000kHz Operating Frequency
Selectable Automatic High-efficiency Discontinuous Operating
Mode at Light Loads
Programmable Peak Current Limit

Reliable Built-in Protections:

Automatic Recovery for Input Under-voltage (UVLO), Output Under-voltage (UVP) and Over-temperature (OTP) Conditions Cycle-by-cycle Valley and Peak Current Limit (OCP) Cycle-by-cycle Reverse Current Limit

Internal and Adjustable Soft-start to Limits Inrush Current
Smooth Pre-biased Startup
Power Good Output Monitor for Under-voltage and Over-voltage
Package:QFN3\*4-19(SQ29012VDC) QFN3\*4-21(SQ29072TXQ)

Applications

Telecom and Networking Systems
Servers
High Power Access Points
Storage Systems
Cellular Base Stations

SQ29093TXQ - High Efficiency, 16V/12A Synchronous Step Down Regulator

Features

Wide Input Voltage Range:

2.9V to 3.6V if VCC is Connected to IN Servers (RC filter is needed from IN to VCC)
2.9V to 16V if VCC is Supplied by External Source Storage Systems
3.6V to 16V if VCC is Supplied by Internal LDO
Internal 8 . 6 \mathsf { m } \Omega Power Switch and 2 . 5 \mathsf { m } \Omega Synchronous Rectifier
Accurate Feedback Set Point: 0.6V ±1% from \angle 4 0 ^ { \circ } \mathsf C to 1 2 5 ^ { \circ } \mathsf { C }
Differential Remote Sense
Fast Transient Response
600kHz, 800kHz and 1000kHz Operating Frequency
Selectable Automatic High-efficiency Discontinuous Operating Mode at Light Loads

Programmable Valley Current Limit

Reliable Built-in Protections:

Applications

Telecom and Networking Systems High Power Access Points Cellular Base Stations

Automatic Recovery for Input Under-voltage (UVLO), Output Under-voltage (UVP) and Ove temperature (OTP) Conditions Cycle-by-cycle Valley and Peak Current Limit (OCP) =0.1uF Hic-cup Mode after 128 Consecutive Cycles Valley Current Limit Protection VN=2.9V\~16V BS  Cycle-by-cycle Reverse Current Limit 》 IN LX + CN=22μF×2CN=0.1μF×2

Internal and Adjustable Soft-start to Limits Inrush Current Smoothly Startup with Pre-biased \mathsf { V } _ { \mathsf { o u r } } Power Good Output Monitor for Under-voltage and Over-voltage

L=0.33μH VouT=1.2V533R=1kCF=220F VSENSECN=100uFR=1 PG FBS CouT=47uF×5 LoadExternal VCC 》 VCC GNDS R2=100k R1=100kΩ VE ISESupp y(opt.)Cvce=1uFO EN MODEILMT GND AGND SS RMODE=0ΩRLu=4.5kΩ ↓ Css=0.22F Back

SQ29071TXQ/SQ29070TXQ

- High Efficiency, 20A, 16V Input Synchronous Step-Down Regulator

Features

Applications

Wide Input Voltage Range:

2.7V to 16V if VCC is Supplied by an External Source
3.6V to 16V if VCC is Supplied by Internal LDO

Internal 8 . 6 \mathsf { m } \Omega Power Switch and 2 . 5 \mathsf { m } \Omega Synchronous Rectifier

Accurate Feedback Setpoint: ± 1 % from \angle 4 0 ^ { \circ } \mathsf C to 1 2 5 ^ { \circ } \mathsf { C }

Remote Sensing at Point of Load Side

Ultra-Fast Load Transient Response

Telecom and Networking Systems
Servers
High Power Access Points
Storage Systems
Cellular Base Stations

Selectable 600kHz, 800kHz, and 1000kHz Switching Frequency

Selectable Automatic High Efficiency Discontinuous Operating Mode at Light Loads

Programmable Valley Current Limit

Reliable Built-In Protections:

 Automatic Recovery for Input Undervoltage (UVLO)
 SQ29070 Latch-Off, SQ29071 Automatic Recovery for Output Undervoltage (UVP) and Overtemperature (OTP) Conditions
 SQ29070 Latch-Off Mode, SQ29071Hiccup Mode after 32 Consecutive Cycles Valley Current Limit Protection
 Latch-Off for Output Overvoltage Condition(OVP)
 Cycle-by-Cycle Reverse, Valley, and Peak Current Limit(OCP)
Internal and Adjustable Soft-Start to Limit Inrush Current
Smooth Startup with Pre-Biased VOUT
Output Voltage Tracking
Output Sinking Mode
Power-Good Output Monitor for Undervoltage and Overvoltage

SQ29020VDC/SQ29080TXQ/SQ29090VDQ/SQ29090TXQ

- High Efficiency, 16V/20A Sync Buck

Features

Wide Input Voltage Range: 3.6-16V, and as Low as 2.9V with External VCC
Applied
SQ29020/SQ29080: Internal 7.5mΩ Power Switch and 2 . 4 \mathsf { m } \Omega Synchronous
Rectifier
SQ29090: Internal 8 . 6 \mathsf { m } \Omega Power Switch and 2 . 5 \mathsf { m } \Omega Synchronous Rectifier
Accurate Feedback Set Point: 0.6V ± 1 %
Differential Remote Sense
Fast Transient Response
600kHz, 800kHz and 1000kHz Operating Frequency
Selectable Automatic High-Efficiency Discontinuous Operating Mode At Light
Loads
Programmable Valley Current Limit
 Automatic Recovery for Input Under-voltage (UVLO), Output Un (UVP) and Over-temperature (OTP) Conditions
\blacktriangleright Cycle-by-cycle Valley and Peak Current Limit (OCP)
 Cycle-by-cycle Reverse Current Limit
Internal, Adjustable Soft-Start Limits Inrush Current
Smooth Pre-Biased Startup
Power Good Output Monitor for Under-Voltage and Over-Voltage
Package:QFN3\*4-19(SQ29012VDC/SQ29090VDQ) QFN3\*4-21(SQ29072TXQ/SY2160TXQ)

Applications

Telecom and Networking Systems
Servers
High Power Access Points
Storage Systems
Cellular Base Stations

SQ29051DFD - High Efficiency, 18V/1.5A Sync Buck

Features

Applications

Low RDS(ON) for Internal MOSFETs: 80mΩ Top, 40mΩ Bottom
Wide Input Voltage Range: 4.5V \~ 18V
Up to 1.5A Output Current
± 1 . 5 % Reference Accuracy
Internal Soft-Start Limits the Inrush Current
750kHz Switching Frequency
Constant On-Time and Valley Current Control to Achieve Fast Transient Response.
Cycle-by-Cycle Peak and Valley Current Limit Protection
Hic-Cup Mode Output Under Voltage Protection
Auto-Recovery Mode Over Temperature Protection
Input Under Voltage Lockout (UVLO)
Startup from Pre-Biased Output
Power Good Indicator
RoHS Compliant and Halogen Free
MSL Rating: MSL1 (DFN2x2-8)
Set Top Box
Portable TV
Access Point Router
DSL Modem
LCD TV

SQ25821NIG

- High Efficiency 16V Input, 15A, Dual Phase Stackable Sync Buck

Features

Applications

Wide Input Voltage Range:

\blacktriangleright 4V to 16V if VCC and VDRV are Supplied by Internal LDO
\blacktriangleright 3V to 16V if VCC and VDRV are Supplied by External 3.3V DC Source
Low RDS(ON) for Internal Switches (Top FET/Bottom FET): 9 / 4 \mathsf { m } \Omega
0 . 6 \lor ± 1 % Reference Voltage Over Temperature Range [ \mathsf { T } ] = - 4 0 ^ { \circ } \mathsf { C } to
\mathsf { 1 2 5 ^ { \circ } C } )
Selectable 1-, 2-, or 4 (Two Devices Paralleled) Interleaved Phases
Shifts
Accurate Current Sharing
Power Good Indicator
Fast Transient Response
Differential Output Voltage Remote Sense
Fully Protected for Short Circuit, Over Voltage, Over Current and Over
Temperature
PMBus Compatible Interface
Programmable Output Voltage (0.4V to 6V), Input UVLO Threshold,
Output Current Limit, OVP/UVP Threshold and Response
Programmable ton rise / toff fall Time, Turn-on/ Turn-off Delay Time
Selectable Switching Frequency (400kHz\~1800kHz, 200kHz/step)
Phase Number, PFM/FCCM Light Load Operation Mode Selected
Real-Time Detection of Input Voltage, Output Voltage, Current,
Temperature and Faults
RoHS Compliant and Halogen Free
Compact package: LGA6x6-42
Power Module
Telecom and Networking Systems
Servers
Storage SSD

SQ20903QDQ - High-efficiency and High-current Sync Buck

Features

Applications

4 . 5 \mathsf { V } to 19V Input Voltage Range
0.6V Reference with ± 1 % Accuracy from -40oC to 125oC
Instant PWM Architecture to Achieve Fast Transient Responses
Integrated \mathsf { S V L D O @ 1 0 0 m A } for DrMOS Module
Startup with Pre-bias Voltage
Programmable Soft-start
Programmable Switching Frequency
Programmable Over Current Limit
Power Good Indication
Over Temperature Protection
OVP, UVP, UVLO Protection
RoHS Compliant and Halogen Free
Compact Package: QFN3×3-16

Base Stations Telecom and Networking Systems

SY8121B1ABC

SY8121C1ABC

Features

4.2-18V Input Voltage Range
2A Output Current Capability
500kHz Switching Frequency Minimize the
External Components
Instant PWM Architecture to Achieve Fast
Transient Responses
Internal Soft-start Limits the Inrush Current
SY8120E1ABC: Forced PWM Operation
Cycle-by-cycle Peak/Valley Current Limitation
Hic-cup Mode Output Short Circuit Protection
Thermal Shutdown with Auto Recovery
Compact Package SOT23-6

Features

4.2V to 18V Input Voltage Range
Up to 2A Output Current
Quiescent Current IQ: 2 0 0 ~ \mu \mathsf { A } (typ.)
Shutdown Current ISHDN: 5 \mu \mathsf { A } (typ.)
SY8121C1ABC: 1.2MHz
Constant-On-Time and Ripple-Based Control
Instant-PWM Architecture to Achieve Fast
Transient Responses
Cycle-by-Cycle Peak/Valley Current Limits
Internal Soft-Start Limits the Inrush Current
Hiccup Mode for Short-Circuit Protection
Thermal Shutdown with Auto-Recovery
Output Auto-Discharge Function
Compact Package: DFN2x2-6/SOT23-6

Applications

Set Top Box Portable TV DSL Modem LCD TV IP CAM Networking

SY81103ABT/SY81103EABT/SY81103CABT/SY81103BABT

- 3A, 18V Input Sync Buck

Features

Applications

 Low \mathsf { R } _ { \mathsf { D S ( O N ) } } for Internal MOSFETs: 80mΩ Top, 40mΩ Bottom Set-Top Box
 Wide Input Voltage Range: 4.5V \~ 18V  Portable TV
 Up to 3A Output Current DSL Modem
 ± 1 . 5 % 0.6V Reference  LCD TV
? Precise EN Threshold  IP Camera
 Pulse-Frequency Modulation (PFM) Mode Operation for SY81103 and SY81103C  Networking Forced Continuous Conduction Mode (FCCM) Operation for SY81103E and SY81103B Internal Soft-Start Limits the Inrush Current Support Smooth Startup with Pre-Biased Output 500kHz Switching Frequency Minimizes the External Components for SY81103 and SY81103E
 1200kHz Switching Frequency Minimizes the External Components for SY81103C and SY81103B
 Constant On-time and Ripple-Based Control to Achieve Fast Transient Responses
 Stable with 1 0 \mu \mathsf { F } COUT
? Cycle-by-Cycle Valley and Peak Current Limit Protection
 Hic-Cup Mode Output Under Voltage Protection
 Auto-Recovery Mode Over Temperature Protection
 Input Under Voltage Lockout (UVLO)
 RoHS-Compliant and Halogen-Free
 Compact Package: SOT23-6

SY81102ABT/SY81102BABT/SY81102CABT/SY81102EABT

- High Efficiency, 2A, 18V Input Synchronous Buck Converter

Features

Applications

Low RDS(ON) for Internal MOSFETs: 130mΩ Top, 105mΩ Bottom
Wide Input Voltage Range: 4.5V \~ 18V Po
Up to 2A Output Current
± 1 . 5 % 0 . 6 \mathsf { V } Reference
Precise EN Threshold
Pulse-Frequency Modulation (PFM) Mode Operation for SY81102 and SY81102C
Forced Continuous Conduction Mode (FCCM) Operation for SY81102E and
SY81102B
Internal Soft-Start Limits the Inrush Current
Support Smooth Startup with Pre-Biased Output
500kHz Switching Frequency Minimizes the External Components for SY81102 and
SY81102E
1200kHz Switching Frequency Minimizes the External Components for SY81102C
1400kHz Switching Frequency Minimizes the External Components for SY81102B
Constant On-time and Ripple-Based Control to Achieve Fast Transient Responses
Stable with 10µF COUT
Cycle-by-Cycle Valley and Peak Current Limit Protection
Hic-Cup Mode Output Under Voltage Protection
Auto-Recovery Mode Over Temperature Protection
Input Under Voltage Lockout (UVLO)
RoHS-Compliant and Halogen-Free
Compact Package: SOT23-6

Set-Top Box rtable TV DSL Modem LCD TV IP Camera Networking

SY8100ABC

- High Efficiency Fast Response, 1.2A, 16V Input Synchronous Step Down Regulator

Features

Low RDS(ON) for internal switches (top/bottom):350/150 mΩ
•4.5-16V input voltage range
•1.2A continuous, 1.5A peak load current capability
Instant PWM architecture to achieve fast transient responses
Internal softstart limits the inrush current
2 % 0.6V reference
RoHS Compliant and Halogen Free
Compact package: SOT23 6 pin

Applications

Set Top Box Portable TV Access Point Router
DSL Modem LCD TV

SY81058ABT/SY81058EABT/SY81058CABT

- High Efficiency, 500kHz, 3A, 18V Input Synchronous Buck Converter

Features

Applications

Low \mathsf { R } _ { \mathsf { D S ( O N ) } } for Internal MOSFETs: 80mΩ Top, 40mΩ Bottom  Set-Top Box Wide Input Voltage Range: 4.5V \~ 18V  Portable TV  DSL Modem Up to 3A Output Current  LCD TV ± 1 . 5 % 0 . 6 \mathsf { V } Reference  IP Camera Precise EN Threshold  Networking Pulse-Frequency Modulation (PFM) Mode Operation for SY81058 and SY81058C Forced Continuous Conduction Mode (FCCM) Operation for SY81058E Internal Soft-Start Limits the Inrush Current Support Smooth Startup with Pre-Biased Output 500kHz Switching Frequency Minimizes the External Components for SY81058 and SY81058E 1200kHz Switching Frequency Minimizes the External Components for SY81058C Constant On-time and Ripple-Based Control to Achieve Fast Transient Responses Stable with 1 0 \mu \mathsf { F } \mathsf { C } _ { \mathsf { o u r } } Cycle-by-Cycle Valley and Peak Current Limit Protection Hic-Cup Mode Output Under Voltage Protection Auto-Recovery Mode Over Temperature Protection Input Under Voltage Lockout (UVLO) VN: 4.5V\~18V BS Vou □ IN LX RoHS-Compliant and Halogen-Free
 Compact Package: SOT23-6
 MSL Rating: MSL1 EN FB GND ON/OFF

SY81058TABT

- High Efficiency, 3A, 18V Input Synchronous Buck Converter

Features

Applications

Set-Top Box

Low RDS(ON) for Internal MOSFETs: 80mΩ Top, 40mΩ Bottom 
Wide Input Voltage Range: 4.5V \~ 18V Portabl e TV DSL Modem
Up to 3A Output Current LCD T
± 1 % 0 . 7 6 5 \vee Reference IP Camera
Precise EN Threshold Networking
Pulse-Frequency Modulation (PFM) Mode Operation
Internal Soft-Start Limits the Inrush Current
Support Smooth Startup with Pre-Biased Output
500kHz Switching Frequency Minimizes the External Components
Constant On-time and Ripple-Based Control to Achieve Fast Transient Responses
Cycle-by-Cycle Valley and Peak Current Limit Protection
Hic-Cup Mode Output Under Voltage Protection
Auto-Recovery Mode Over Temperature Protection
Input Under Voltage Lockout (UVLO)
RoHS-Compliant and Halogen-Free
Compact Package: SOT23-6
MSL Rating: MSL1 (SOT23-6)

Back

SY8113AAIC/SY8113B1ADC/SY8113C1ADC/SY8113DAIC/ SY81003EADC/SY8113E1ADC/SY8113HAIC/SY8113KAIC

- High Efficiency, 3A, 18V Input Synchronous Step Down Regulator

Features

 Low RDS(ON) for Internal switches (top/bottom): 80mΩ/40mΩ
 Input voltage range: 4.5-18V(SY8113A/SY8113B1/SY8113D/SY8113E1/SY8113H/SY8113K)
 4.2-18V(SY8113C1/SY8113E) 3A output current capability Switching frequency: 500kHz(SY8113D/SY8113E1/SY8113H) 600kHz(SY8113E) 1MHz(SY8113A/SY8113K) 1.2MHz(SY8113C1) 1.4MHz(SY8113B1) Instant PWM architecture to achieve fast transient responses Internal softstart limits the inrush current(SY8113B1/SY8113C1/SY8113E/SY8113E1) External Soft-start Limits the Inrush Current(SY8113K) Forced PWM Operation(SY8113B1/SY8113C1/SY8113E1) PFM/PWM Selectable Light Load Operation Mode(SY8113H) Startup from Pre-biased Output(SY8113E)
 Cycle-by-cycle Peak/Valley Current Limitation(SY8113B1/SY8113C1/SY8113E/SY8113E1) Cycle-by-cycle Peak Current Limitation(SY8113E1/SY8113K) Hic-cup Mode Output Short Circuit Protection(SY8113B1/SY8113C1/SY8113E/SY8113E1) Power Good Indicator(SY8113D/SY8113K) Programmable Soft-start Time to Limit the Inrush Current(SY8113D/SY8113H) Thermal Shutdown with Auto Recovery(SY8113B1/SY8113C1/SY8113D/SY8113E1) Over Temperature Protection with Auto Recovery(SY8113E) Output Auto Discharge Function(SY8113B1/SY8113C1/SY8113E/SY8113E1/SY8113K)
 ± 1 . 5 % / ± 1 % (SY8113E) 0.6V reference
 Compact Package: TSOT23-8(SY8113A/SY8113D/SY8113H/SY8113K) TSOT23-6(SY8113B1/SY8113C1/SY8113E/SY8113E1)

Applications

Set Top Box
Portable TV
DSL Modem
LCD TV
Access Point Router
IP CAM(SY8113B1/SY8113C1/SY8113E1)
Networking(SY8113B1/SY8113C1/SY8113E1)

SY81153CART

- 3A, 18V Input Sync Buck

Features

Applications

Set Top Box Portable TV DSL Modem LCD TV IP Camera Networking

Low \mathsf { R } _ { \mathsf { D S ( O N ) } } for Internal MOSFETs: 6 5 \mathsf { m } \Omega Top, 30mΩ Bottom
Wide Input Voltage Range: 4V \~ 18V
Up to 3A Output Current
Precise ± 1 % 0.6V Reference under { - 4 0 ^ { \circ } } C\~125°C
Precise EN Threshold
PFM Light Load Operation for High Efficiency
Internal Soft-Start Limits the Inrush Current
1200kHz Switching Frequency Minimizes the External Components
Constant On-time and Ripple-Based Control to Achieve Fast Transient Responses
Cycle-by-Cycle Valley and Peak Current Limit Protection
Hic-Cup Mode Output Under Voltage Protection
Auto-Recovery Mode Over Temperature Protection
Input Under Voltage Lockout (UVLO)
RoHS-Compliant and Halogen-Free

SY81103BABT/SY81103CABT

- 3A, 18V Input Sync Buck

Features

Applications

Low RDS(ON) for Internal MOSFETs: 8 0 \mathsf { m } \Omega Top, 40mΩ Bottom Set-Top Box  Wide Input Voltage Range: 4.5V \~ 18V  PDoSrLtaMbloedTeVm Up to 3A Output Current  LCD TV ± 1 . 5 % 0 . 6 \mathsf { V } Reference  IP Camera Precise EN Threshold  Networking Pulse-Frequency Modulation (PFM) Mode Operation for SY81103 and SY81103C Forced Continuous Conduction Mode (FCCM) Operation for SY81103E and SY81103B Internal Soft-Start Limits the Inrush Current Support Smooth Startup with Pre-Biased Output 500kHz Switching Frequency Minimizes the External Components for SY81103 and SY81103E 1200kHz Switching Frequency Minimizes the External Components for SY81103C and SY81103B Constant On-time and Ripple-Based Control to Achieve Fast Transient Responses Stable with 1 0 \mu \mathsf { F } COUT CBS Cycle-by-Cycle Valley and Peak Current Limit Protection Hic-Cup Mode Output Under Voltage Protection BS IN L Auto-Recovery Mode Over Temperature Protection Input Under Voltage Lockout (UVLO)  RoHS-Compliant and Halogen-Free EN FB GND  Compact Package: SOT23-6 ON/OFF

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SY81154UART- High Efficiency, 800kHz, 4A, 18V Input Synchronous Buck Converter

Features

Low \mathsf { R } _ { \mathsf { D S ( O N ) } } for Internal MOSFETs: 65mΩ Top, 30mΩ Bottom
Wide Input Voltage Range: 4.5V \~ 18V
Up to 4A Output Current
Precise ± 1 % 0.6V Reference under { - 4 0 ^ { \circ } } C\~125°C
Precise EN Threshold
USM Light Load Operation
Internal Soft-Start Limits the Inrush Current
800kHz Switching Frequency Minimizes the External Components
Constant On-time and Ripple-Based Control to Achieve Fast Transient Responses
Cycle-by-Cycle Valley and Peak Current Limit Protection
Hic-Cup Mode Output Under Voltage Protection
Auto-Recovery Mode Over Temperature Protection
Input Under Voltage Lockout (UVLO)
RoHS-Compliant and Halogen-Free
Compact Package: SOT563

Applications

Set Top Box Portable TV DSL Modem LCD TV IP Camera Networking

SY81104ADT/SY81104EADT/SY81105ADT/SY81105EADT/ SY81106ADT/SY81106EADT

- 4A, 18V Input Sync Buck

Features

Applications

Low \mathsf { R } _ { \mathsf { D S ( O N ) } } for Internal MOSFETs: 29mΩ Top, 19mΩ Bottom
Wide Input Voltage Range: 4.5V \~ 18V
Up to 4A(SY81104,E)/ 5A(SY81105,E)/ 6A(SY81106,E) Output Current
± 1 % 0.6V Reference
Pulse-Frequency Modulation (PFM) Mode Operation for SY81104, 5, 6
Forced Continuous Conduction Mode (FCCM) Operation for SY81104E, 5E , 6E
Internal Soft-Start Limits the Inrush Current
Support Smooth Startup with Pre-Biased Output
400kHz Switching Frequency Minimizes the External Components
Constant On-time and Ripple-Based Control to Achieve Fast Transient Responses
Output Auto-Discharge Function
Cycle-by-Cycle Valley and Peak Current Limit Protection
Hic-Cup Mode Output Under Voltage Protection

Auto-Recovery Mode Over Temperature Protection Input Under Voltage Lockout (UVLO)

Set-Top Box Portable TV DSL Modem LCD TV IP Camera Network

SY81053ADT

- High Efficiency, 3.5A, 18V Input Synchronous Step Down Regulator

Features

Low RDS(ON) for Internal Switches (Top/Bottom): 80mΩ/40mΩ
4.2-18V Input Voltage Range
3.5A Output Current Capability
500kHz Switching Frequency Minimize the External Components
Stable with 1 0 \mu \mathsf { F } COUT and 3 . 3 \mu \ H Inductor
Instant PWM Architecture to Achieve Fast Transient Responses
Internal Soft-start Limits the Inrush Current
Startup from Pre-biased Output
Cycle-by-cycle Peak/Valley Current Limitation
Hic-cup Mode Output Short Circuit Protection
Over Temperature Protection with Auto Recovery
Output Auto Discharge Function
± 1 % Internal Reference Voltage
RoHS Compliant and Halogen Free
Compact Package: TSOT23-6

SY8104IADC

- 4A, 18V Input Sync Buck

Features

Applications

4.2-18V Input Voltage Range
4A Output Current Capability
500kHz Switching Frequency Minimize the External
Components
Instant PWM Architecture to Achieve Fast Transient
Responses
Internal Soft-Start Limits the Inrush Current
Cycle-by-cycle Peak/Valley Current Limitation
Hic-cup Mode Output Short Circuit Protection
Thermal Shutdown with Auto Recovery
Output Auto Discharge Function
Compact Package: TSOT23-6

Set Top Box Portable TV DSL Modem LCD TV IP CAM Networking

SY8105IADC- 5A, 18V Input Sync Buck

Features

4.5V to 18V Input Voltage Range
Up to 5A Output Current
500kHz Switching Frequency Minimizes Required External Components
Constant-On-Time and Ripple-Based Control to Achieve Fast Transient
Responses
Cycle-by-Cycle Top/Bottom Current Limits
Internal Soft-Start Limits Inrush Current
Hiccup Mode for Short-Circuit Protection
Overtemperature Protection with Auto-Recovery
Output Auto-Discharge Function
RoHS-Compliant and Halogen-Free
Compact Package: TSOT23-6

Applications

Set-Top Box Portable TV DSL Modem LCD TV IP Camera Networking

SY81586SVD

- High Efficiency, 6A, 18V Input Synchronous Buck Converter

Features

Applications

Low \mathsf { R } _ { \mathsf { D S ( O N ) } } for Internal MOSFETs: 29mΩ Top, 19mΩ Bottom
Wide Input Voltage Range: 4.5V \~ 18V
Up to 6A Output Current
± 1 % 0.6V Reference
Pulse-Frequency Modulation (PFM) Mode Operation
Internal Soft-Start Limits the Inrush Current
Support Smooth Startup with Pre-Biased Output
400kHz Switching Frequency Minimizes the External Components
Constant On-time and Ripple-Based Control to Achieve Fast Transient
Responses
Output Auto-Discharge Function
Cycle-by-Cycle Valley and Peak Current Limit Protection
Hic-Cup Mode Output Under Voltage Protection
Auto-Recovery Mode Over Temperature Protection
Input Under Voltage Lockout (UVLO)
RoHS-Compliant nd Halogen-Fr

Set-Top Box Portable TV DSL Modem LCD TV IP Camera Network

SY8106ARAC/SY8106A1RAC - High Efficiency, Fast Response, 6A, 18V Input Synchronous Step Down Regulator with I2C Interface

Features

Applications

 4 . 5 \mathsf { V } to 18V input voltage range TCON Power System
 6A synchronous buck regulator: Mobile handsets Low \mathsf { R } _ { \mathsf { D S ( O N ) } } for internal switches (Top FET/Bottom FET): 50/15 mΩ Portable applications 6.0A output current capability Instant PWM architecture to achieve fast transient responses 200kHz to 1MHz programmable switching frequency I2C programmable output voltage with initial voltage setting by resistor divider 0 . 6 \mathsf { V } + \mathsf { I } - 1 % feedback reference voltage VIN Enable control CIN PG PG (Open Drain Output) Power good indicator 10uFx2工 BS VoUT Adjustable soft-start time ON/OFF EN 2.2uH Co PSM mode at light load for high efficiency ²C Interface SDA SCL OUT FB 10k R1 C 22uFx3 CHiyc-lceu-bpy-mcoydcle ocutrpruetnts lhiomrittcpircotueitctpirontection R VL R Hic-cup mode output over voltage protection
 I2C compatible interface: CsF GND Supports 100kHz standard mode and 400kHz fast mode 7-Bits VID programmable output voltage from 0.68V to 1.95V with 10mV/Step
 VID voltage transition slew rate control Power good status read back Over temperature warning read back
 On/Off control Thermal shutdown with auto recovery Input UVLO
 RoHS Compliant and Halogen Free
 Compact package: QFN3x3-20 device adress: SY8106A(0x65H) SY8106A1(0x66H)

SY8156IADC

- 6A, 18V Input, Sync Buck

Features

4 . 5 \mathsf { V } to 18V Input Voltage Range Up to 6A Output Current Low \mathsf { R } _ { \mathsf { D S ( O N ) } } for Internal Switches: 29mΩ Top, 19mΩ Bottom 400kHz Switching Frequency Minimizes Required External Components Constant-On-Time and Ripple-Based Control to Achieve Fa Transient Responses Stable with 2 2 \mu \ F COUT and 1 \mu \mathsf { H } Inductor Cycle-by-Cycle Top/Bottom Current Limits Internal Soft-Start Limits the Inrush Current Hiccup Mode for Short-Circuit Protection Over-temperature Protection with Auto-Recovery Output Auto-Discharge Function RoHS-Compliant and Halogen-Free  Compact Package: TSOT23-6

Applications

Set-Top Boxes Portable TVs DSL Modems LCD TVs IP Cameras Networking

SY81050RRC/SY81050CRRC - 18V Input, 12A Sync Buck with I2C Interface

Features

2.85V to 18V Input Voltage Range
Low \mathsf { R } _ { \mathsf { D S ( O N ) } } for Internal Switches (Top/Bottom)
1 5 \mathsf { m } \Omega / 4 . 5 \mathsf { m } \Omega
12A Continuous, 15A Peak (Duration<100µs)
Output Current Capability
± 1 % Reference Voltage Accuracy
External Programmed Soft Start
Pre-biased Startup
Power Good Indicator
I2C Programmed Function:
Selectable Reference Range from 0 . 6 \mathsf { V } to
1.108V in 4mV Steps with Slew Rate Control
Selectable Switching Frequency: 500kHz,
750kHz, 1MHz and 1.25MHz
Selectable PFM and FCCM Mode
Selectable Hic-cup and Latch off Mode for UV
and OVP
Programmable Peak and Valley Current Limit
Selectable Output Discharge
Output Voltage and Output Current Monitor
Auto-recovery for Over Temperature Protectio
RoHS Compliant and Halogen Free
Compact Package: QFN3x4-14

Applications

Smart-phone Web-tablets SSD

SY81012VDC

- 12A, 16V Input, Sync Buck

Features

Applications

Telecom and Networking Systems

Wide Input Voltage Range:  Power Module 3 . 6 \mathsf { V } to 16V if VCC is Supplied by Internal LDO   Servers 2.7V to 16V if VCC is Supplied by External 3.3V DC Source  LCD-TV/Net-TV/3DTV Low \mathsf { R } _ { \mathsf { D S ( O N ) } } for Internal Switches (Top/Bottom): 1 2 . 6 { m } \Omega / 4 . 3 { m } \Omega  Set Top Box  0 . 6 \lor ± 1 % Voltage Reference Over Temperature Range  Notebook \prime \mathsf { T J } = - 4 0 ^ { \circ } °C to 1 2 5 ^ { \circ } °C)  High Power AP Adopt Constant-on-time Architecture and Frequency Lock Loop Instant PWM Architecture to Achieve Fast Transient Response. 600kHz, 800kHz and 1000kHz Switching Frequency Operation Selected by MODE Pin PFM/FCCM Light Load Operation Mode Selected by MODE pin. Programmable Bottom Valley Limit by ILMT pin Reliable Protection Mode: Auto-Recovery Mode for UVP, UVLO, OTP and OVP Cycle-by-cycle Valley Current Limit and Peak Current Limit Cycle-by-cycle Reverse Current Limit Internal Soft-start Limits the Inrush Current Programmable Soft-start Time by SS Pin Smooth Soft-start with Output Pre-biased Function Adjustable Input Voltage UVLO by EN Pin Power Good Indicator Differential Output Voltage Remote Sense Output Discharge Function RoHS Compliant and Halogen Free Compact Package: QFN3x4-19

SY81047WZQ/SY81047BWZQ

- High Efficiency, 12A, 17V Input Synchronous Step-down Regulator

Features

Applications

Wide Input Voltage Range: 4.5-17V Internal 9 . 8 \mathsf { m } \Omega Power Switch and 4.5mΩ Synchronous Rectifier Accurate Feedback Set Point: 0 . 6 \mathsf { V } ± 1 % Fast Transient Response Selectable 400kHz, 800kHz and 1200kHz Operating Frequency Selectable Automatic High-efficiency Discontinuous Operating Mode at Light Loads Selectable Valley Current Limit Reliable Built-in Protections: C Automatic Recovery for Input Under-voltage (UVLO), Output Under-voltage (UVP), Output Over-voltage (OVP) and Overtemperature (OTP) Conditions Cycle-by-cycle Reverse, Valley and Peak Current Limit (OCP) Internal, Adjustable Soft-Start to limit Inrush Current Smooth Pre-biased Startup Power Good Output Monitor for Under-voltage and Over-voltage

Telecom and Networking Systems Servers

SY81057ABT/SY81057BABT/SY81057CABT/SY81057EABT

- High Efficiency, 2A, 18V Input Synchronous Buck Converter

Features

Applications

 Low \mathsf { R } _ { \mathsf { D S ( O N ) } } for Internal MOSFETs: 1 3 0 { m } \Omega Top, 105mΩ Bottom Set-Top Box
 Wide Input Voltage Range: 4.5V \~ 18V  Portable TV
 Up to 2A Output Current  DSL Modem
 ± 1 . 5 % 0.6V Reference  LCD TV
 Precise EN Threshold  IP Camer Pulse-Frequency Modulation (PFM) Mode Operation for SY81057 and SY81057C  Networking
 Forced Continuous Conduction Mode (FCCM) Operation for SY81057E and SY81057B Internal Soft-Start Limits the Inrush Current
 Support Smooth Startup with Pre-Biased Output
 500kHz Switching Frequency Minimizes the External Components for SY81057 and SY81057E 1200kHz Switching Frequency Minimizes the External Components for SY81057C
 1400kHz Switching Frequency Minimizes the External Components for SY81057B
 Constant On-time and Ripple-Based Control to Achieve Fast Transient Responses
 Stable with 10µF COUT C Cycle-by-Cycle Valley and Peak Current Limit Protection Hic-Cup Mode Output Under Voltage Protection V _ { \ N } = 4 . 5 V ~ 1 8 V BS
 Auto-Recovery Mode Over Temperature Protection IN LX
 Input Under Voltage Lockout (UVLO) CFF RoHS-Compliant and Halogen-Free C

 Compact Package: SOT23-6 EN FB
 Moisture Sensitivity Level (MSL): 1 ON/OFF GND

SY81057TABT

- High Efficiency, 2A, 18V Input Synchronous Buck Converter

Features

Applications

Low RDS(ON) for Internal MOSFETs: 130mΩ Top, 105mΩ Bottom
Wide Input Voltage Range: 4.5V \~ 18V
Up to 2A Output Current
±1% 0.765V Reference
Precise EN Threshold
Pulse-Frequency Modulation (PFM) Mode Operation
Internal Soft-Start Limits the Inrush Current
Support Smooth Startup with Pre-Biased Output
500kHz Switching Frequency Minimizes the External Components
Constant On-time and Ripple-Based Control to Achieve Fast Transient Responses
Cycle-by-Cycle Valley and Peak Current Limit Protection
Hic-Cup Mode Output Under Voltage Protection
Auto-Recovery Mode Over Temperature Protection
Input Under Voltage Lockout (UVLO)

Set-Top Box Portable TV DSL Modem LCD TV IP Camera Networking

SY81020VDC

- 20A, 16V Input, Synchronous Step-Down Regulator

Features

Applications

Wide Input Voltage Range: 3.6-16V, and as Low as 2.9V with External VCC Applied Internal 7 . 5 \mathsf { m } \Omega Power Switch and 2 . 4 \mathsf { m } \Omega Synchronous Rectifier Accurate Feedback Set Point: 0 . 6 \mathsf { V } ± 1 % Differential Remote Sense Fast Transient Response 600kHz, 800kHz and 1000kHz Operating Frequency Selectable Automatic High-Efficiency Discontinuous Operating Mode At Light Loads Programmable Valley Current Limit Automatic Recovery for Input Under-voltage (UVLO), Output Under-voltage (UVP) and Overtemperature (OTP) Conditions Cycle-by-cycle Valley and Peak Current Limit (OCP) Cycle-by-cycle Reverse Current Limit Internal, Adjustable Soft-Start Limits Inrush Current Smooth Pre-Biased Startup  Power Good Output Monitor for Under-Voltage and Over-Voltage

Telecom and Networking Systems
Servers
High Power Access Points
Storage Systems
Cellular Base Stations

SY82003ABT

- 20A, 16V Input, Synchronous Step-Down Regulator

Features

Applications

Low RDS(ON) for Internal MOSFETs: 120mΩ Top, 60mΩ Bottom
Wide Input Voltage Range: 4.5V \~ 24V
Up to 3A Output Current
±1% 0.6V Reference Accuracy
Precise EN Threshold
PFM Light Load Operation for High Efficiency
Internal Soft-Start Limits the Inrush Current
Support Smooth Startup with Pre-Biased Output
500kHz Switching Frequency Minimizes the External Components
Constant On-Time and Ripple-Based Control to Achieve Fast
Transient Responses
Stable with 10µF COUT
Output Auto-Discharge Function
Cycle-by-Cycle Valley and Peak Current Limit Protection
Hic-Cup Mode Output Under Voltage Protection
Auto-Recovery Mode Over Temperature Protection
Input Under Voltage Lockout (UVLO)
RoHS-Compliant and Halogen-Free
Compact Package: SOT23-6

Set-Top Box Portable TV DSL Modem LCD TV IP Camera Networking

SY8232FAC

- 2A, 23V Input, Synchronous Step-Down Regulator

Features

Low \mathsf { R } _ { \mathsf { D S ( O N ) } } for Internal Switches (Top/Bottom)
1 5 0 / 1 1 0 { \dot { m } } { \dot { \Omega } }
4.5-23V Input Voltage Range
Instant PWM Architecture to Achieve Fast
Transient Responses
Programmable Soft-start Limits the Inrush
Current
Pseudo-constant Frequency: 500kHz
2A Output Current Capability
1 . 5 % 0.6V Reference
RoHS Compliant and Halogen Free
Compact Package: SO8

Applications

Set Top Box
Portable TV
Access Point Router
DSL Modem
LCD TV

SY8233FCC

- 3A, 23V Input, Synchronous Step-Down Regulator

Features

Low \mathsf { R } _ { \mathsf { D S ( O N ) } } for Internal Switches (Top/Bottom): 130/90 mΩ
4.5-23V Input Voltage Range
Instant PWM Architecture to Achieve Fast Transient Responses
Programmable Softstart Limits the Inrush Current
Pseudo-constant Frequency: 500khz
3A Output Current Capability
1 . 5 % 0.6V Reference
RoHs Compliant and Halogen Free
Compact Package: SO8E

Applications

Set Top Box
Portable TV
Access Point Router
DSL Modem
LCD TV

SY8200ABC

- 0.6A, 24V Input Synchronous Step Down Regulator

Features

Low RDS(ON) for internal switches
(top/bottom):420/200 mΩ
6-24V input voltage range
Instant PWM architecture to achieve fast
transient responses
Internal softstart limits the inrush current
2 % 0.6V reference
RoHS Compliant and Halogen Free
Compact package: SOT23-6 pin

Applications

Set Top Box
Portable TV
Access Point Router
DSL Modem
LCD TV

SY8253ADC/SY8253AIC

- 3A, 23V Input, Sync Buck

Features

Low RDS(ON) for Internal Switches (Top/Bottom): 105mΩ/50mΩ
4.5-23V Input Voltage Range
3A Output Current Capability
5 0 0 ~ { \mathsf { k H z } } Switching Frequency
Instant PWM Architecture To Achieve Fast Transient Responses.
Cycle-by-cycle Peak Current Limitation
Internal Softstart Limits The Inrush Current Hic-Cup Mode Output Short Circuit Protection ± 1 . 5 % 0.6V Reference
Power Good Indicator (SY8253AIC Only)
TSOT23-8/ TSOT23-6 Package

Applications

Set Top Box
Portable TV
Access Point Router
DSL Modem
LCD TV

SY8254RAC/SY8284RAC/SY8284BRAC/SY8284CRAC

- 4A, 23V Input, Sync Buck

Features

Applications

Low \mathsf { R } _ { \mathsf { D S ( O N ) } } for Internal Switches (Top/Bottom): 85/35mΩ Wide Input Voltage Range: 4-23V SY8284/B/C-Instant PWM Architecture to Achieve Fast Transient Responses SY8254/8284B-Internal 1.2ms Soft-start Limits the Inrush Current SY8284-Internal 600µs Soft-start Limits the Inrush Current SY8284C-Internal 8 0 0 \mu \ s Soft-start Limits the Inrush Current Pseudo-constant Frequency: 600kHz 4A Output Current Capability SY8284B/C-100mA LDO Current Capability SY8284B-Fixed 3.338V Output Voltage SY8284B/C-Fixed 5.1V Output Voltage ± 1 % Internal Reference Voltage SY8254-PFM/FCCM Selectable Light Load Operation mode Optional Bypass Input Power Good Indicator Output Discharge Function Output Current Limit Protection SY8254/SY8284：Hiccup Mode Output Short Circuit Protection Output Under Voltage Protection Output Over Voltage Protection SY8284B/C-Latch-off Mode Output Under Voltage Protection SY8284B/C-Latch-off Mode Output Over Voltage Protection SY8284B/C-Latch-off Mode Over Temperature Protection Programmable Bottom FET Current Limit Input Under Voltage Lock-out(UVLO) Over Temperature Protection With Auto Recovery  RoHS Compliant and Halogen Free  Compact Package: \mathsf { Q F N 3 } x 3 { - } 2 0

LCD-TV/Net-TV/3DTV
Set Top Box
Notebook
High Power AP

6A, 24V Input, Sync Buck

SY8386BRHC/SY8386CRHC/SY8386TRHC Features

Low \mathsf { R } _ { \mathsf { D S ( O N ) } } for Internal Switches (Top/Bottom): SY8386B/SY8386C:38/19mΩ SY8386T:18/8mΩ Wide Input Voltage Range: SY8386B/SY8386C: 4.5\~24V SY8386T: 4\~25V Integrated Bypass Switch-SY8386B/SY8386C: 1.2Ω SY8386T: 1Ω Instant PWM Architecture to Achieve Fast Transient Responses Internal Soft-start Limits the Inrush Current Pseudo-Constant Frequency-SY8386B/SY8386C: 500kHz SY8386T:660kHz Adjustable Output Voltage Application 6A Output Current Capability ± 1 % Internal Reference Voltage PFM/USM Selectable Light Load Operation Mode Power Good Indicator Output Discharge Function Cycle-by-cycle Valley and Peak Current Limit Protection Programmable Valley Current Limit Threshold by ILMT Pin Latch-off Mode Output Under Voltage Protection Latch-off Mode Output Over Voltage Protection Latch-off Mode Over Temperature Protection Input UVLO  Compact Package: QFN2.5×2.5-16

Applications

LCD TV/3DTV Set-Top Box Notebook High-Power AP

8A, 24V Input, Sync Buck SY83088ARHC/SY83088A1RHC Features

Low RDS(ON) for Internal MOSFETs: 20mΩ Top, 10mΩ Bottom
Wide Input Voltage Range: 4V \~ 24V
Adjustable Output Voltage: 0 . 6 \mathsf { V } ~ 1 2 . 5 \mathsf { V }
Large Duty Cycle On-Time Stretch
8A Continuous Output Current Capability
600kHz Pseudo-Constant Frequency
± 1 % Internal Reference Voltage
Internal 1ms(SY83088A)/1.2ms(SY83088A1) Soft-Start Limits the Inrush Current
Constant On-Time and Ripple-Based Control to Achieve Fast Transient Responses
Integrated 1.5Ω Bypass Switch
PFM/FCCM Selectable Light Load Operation Mode
Power Good Indicator
Output Auto-Discharge Function
Programmable Valley Current Limit Threshold by ILMT Pin
Cycle-by-Cycle Valley and Peak Current Limit Protection
Hic-Cup Mode Output Under Voltage Protection
Auto-Recovery Mode Output Over Voltage Protection
Auto-Recovery Mode Over Temperature Protection
Input Under Voltage Lockout (UVLO)
RoHS Compliant and Halogen Free
Compact Package: { \mathsf { Q F N } } { \mathsf { L } } . 5 { x } 2 . 5 { - } 1 6
Moisture Sensitivity Level (MSL): 1

Applications

LCD-TV/Net-TV/3D-TV
Set Top Box
Notebook
High Power AP

Back

8A, 24V Input, Sync Buck

SY8388ARHC Features

Applications

Low \mathsf { R } _ { \mathsf { D S ( O N ) } } for Internal Switches (Top/Bottom): 20/10 mΩ
Wide Input Voltage Range: 4\~24V
Integrated Bypass Switch: 1 . 5 \Omega
Instant PWM Architecture to Achieve Fast Transient
Responses
Internal Soft-Start Limits the Inrush Current
Pseudo-Constant Frequency: 600kHz
Adjustable Output Voltage Application
8A Output Current Capability
± 1 % Internal Reference Voltage
PFM/FCCM Selectable Light Load Operation Mode
Power Good Indicator
Output Discharge Function
Cycle-by-cycle Valley and Peak Current Limit Protection
Programmable Valley Current Limit Threshold by ILMT Pin
Hic-cup Mode Output Under Voltage Protection
Auto-recovery Mode Output Over Voltage Protection
Auto-recovery Mode Over Temperature Protection
Input UVLO
Compact Package: QFN2.5×2.5-16
LCD-TV/Net-TV/3DTV
Set Top Box
Notebook
High Power AP

SY83088JRHC - High Efficiency Fast Response, 8A, 24V Input Synchronous Buck Converter with 100mA 3.3V LDO

Features

Applications

Low \mathsf { R } _ { \mathsf { D S ( O N ) } } for Internal MOSFETs: 20mΩ Top, 10mΩ Bottom Wide Input Voltage Range: 4V \~ 24V Adjustable Output Voltage: 0 . 6 \mathsf { V } ~ 1 2 . 5 \mathsf { V } Large Duty Cycle On-Time Stretch 8A Continuous Output Current Capability 600kHz Pseudo-Constant Frequency ± 1 % Internal Reference Voltage Internal 1.2ms Soft-Start Limits the Inrush Current Constant On-Time and Ripple-Based Control to Achieve Fast Transient Response  Integrated 3.3V LDO with 100mA Current Capability

LCD-TV/Net-TV/3D-TV
Set Top Box
Notebook
High Power AP

SY8388RHC/SY8388BRHC/SY8388B3RHC/SY8388C3RHC/SY8388D3RHC

Features

 Low \mathsf { R } _ { \mathsf { D S ( O N ) } } for Internal Switches (Top/Bottom): 30/15mΩ Wide Input Voltage Range: 4.5\~24V Integrated Bypass Switch Instant PWM Architecture to Achieve Fast Transient Responses Internal Soft-start Limits the Inrush Current Pseudo-Constant Frequency: 500kHz(SY8388) 600kHz(SY8388B/B3/C3/D3) SY8388-Adjustable Output Voltage Application SY8388B/B3-Fixed 3.338V Output Voltage SY8388C3/D3-Fixed 5.1V Output Voltage 8A Output Current Capability SY8388B/D3-100mA LDO Current Capability ± 1 % Internal Reference Voltage PFM/USM Selectable Light Load Operation Mode Power Good Indicator Output Discharge Function Cycle-by-cycle Valley and Peak Current Limit Protection Programmable Valley Current Limit Threshold by ILMT Pin Latch-off Mode Output Under Voltage Protection Latch-off Mode Output Over Voltage Protection Latch-off Mode Over Temperature Protection
. Input UVLO
 Compact Package: QFN2.5×2.5-16

8A, 25V Input, Sync Buck

SY83008YKQFeatures

Input Under Voltage Lockout (UVLO) RoHS Compliant and Halogen Free Compact Package: { \sf Q F N } 2 . 5 x 2 . 5 - 1 7

Low RDS(ON) for Internal MOSFETs: 1 7 { m } \Omega Top, 8 . 5 \mathsf { m } \Omega Bottom
Wide Input Voltage Range: 4V \~ 25V
Multiple Identity Selection: Fixed 5.1V, 3.338V or Adjustable Output Voltage
± 1 % 0 . 6 \mathsf { V } Reference under T \Delta = - 4 0 ^ { \circ } C ~ 1 2 5 ^ { \circ } C
8A Continuous Output Current Capability Applications
100mA LDO Current Capability 
Support 9 8 % Duty Cycle Operation 
2 5 \mu \ A Low Quiescent Current  Notebook
1Ω Integrated Bypass Switch 
600kHz Pseudo-Constant Frequency
Internal Soft-Start Limits the Inrush Current
Support Smooth Startup with Pre-Biased Output
Advanced Constant On-Time and Ripple-Based Control to Achieve Fast Transient Responses
PFM/PFM + ^ { * } TM/USM Selectable Light Load Operation Mode
Power Good Indicator
Output Auto-Discharge Function
Cycle-by-Cycle Valley, Peak and Reverse Over Current Protection (OCP) for Buck
Latch-off Mode Output Under Voltage Protection (UVP) for Buck
Latch-off Mode Output Over Voltage Protection (OVP) for Buck
Latch-off Mode Over Temperature Protection (OTP) for Buck
Auto-recovery Mode Output Under Voltage (UVP) Protection for LDO
Auto-recovery Mode Over Temperature Protection (OTP) for LDO

LCD-TV/Net-TV/3D-TV Set Top Box High Power AP

SY8310RAC/SY8310DRAC Features

 4–24V Input Voltage Range
 SY8310：Up to 9A Continuous/14A Peak Output Current
 SY8310D: 9A Continuous/12A Peak Output Current Capability of the VDD2 Regulator
 SY8310D:Compatible for LPDDR4X Application
 Low RDS(ON) for Internal Switches: 27mΩ Top, 9mΩ Bottom
 Integrated 1.2Ω Bypass Switch
. SY8310：COT Ripple-Based Control to Achieve Fast Transient Responses PFM/USM Selectable Light Load Operation Mode
 4 5 0 \mu \ s oScoftn-sSttanrt IFnrreuqsuhenCcuyr:re6n0t0LkiHmzit Applications
 SY8310: Adjustable Output Voltage . LCD TV/3DTV
 SY8310D: Fixed 0.61V VDDQ Reference  Set-Top Box
 SY8310： ±1% 0.6V Internal Reference Voltage  Notebook
 SY8310D: ±1% 0.6V VDD2 Reference  High-Power AP
 SY8310：±1A Source/Sink Current Capability
 SY8310D：±1A Source/Sink Current Capability of the VDDQ LDO
 SY8310: Buffered Low-Noise ±10mA VTTREF Output Power-Good Indicator
 Support for VTT LDO High-Z in S3
 Output Tracking Discharge Function for the Regulator and VTT LDO
 Cycle-by-Cycle Valley/Peak-Current Limit
 Latch-Off Mode Output Undervoltage (UVP), Overvoltage (OVP), and Overtemperature (OTP)
 Input and Bias Undervoltage (UVLO)
 RoHS-Compliant and Halogen-Free
 Compact Package: QFN3mm x 3mm-20

High Efficiency Fast Response, 9 8 % Duty, 6A, 24V Input Synchronous Buck Converter SY83086ARHC

Features

Low RDS(ON) for Internal MOSFETs: 28mΩ Top, 16mΩ Bottom
Wide Input Voltage Range: 4.5V \~ 24V Set Top Box
Adjustable Output Voltage: 0 . 6 \mathsf { V } ~ 1 2 . 5 \mathsf { V }  Notebook
High Duty Cycle Capable using On-Time Stretch
6A Continuous Output Current Capability
600kHz Pseudo-Constant Frequency
± 1 % Internal Reference Voltage
Internal 1.2ms Soft-Start Limits the Inrush Current
Constant On-Time and Ripple-Based Control to Achieve Fast Transient Responses
Integrated 1.2Ω Bypass Switch
PFM/FCCM Selectable Light Load Operation Mode
Power Good Indicator
Output Auto-Discharge Function
Adjustable Valley Current Limit Threshold by ILMT Pin
Cycle-by-Cycle Valley and Peak Current Limit Protection
Hic-Cup Mode Output Under Voltage Protection
Auto-Recovery Mode Output Over Voltage Protection
Auto-Recovery Mode Over Temperature Protection
Input Under Voltage Lockout (UVLO)
RoHS Compliant and Halogen Free
Compact Package: QFN 1 2 . 5 x 2 . 5 - 16

Applications

LCD-TV/Net-TV/3D-TV High Power AP