Products
Applications
Support
Quality
Investor Relations
About Silan
中
Products
Discrete Divice
LVMOS
Planar LVMOS Normal Trench LVMOS Split Gate Trench LVMOS Automotive MOSFET
HVMOS
Planar HVMOS Multi-Epi DPMOS Trench DPMOS
IGBT
Planar IGBT Trench IGBT SiC Hybrid IGBT RC IGBT
SiC
SiC MOS
Diode
FRD
IPM
DIP2V/SOP2V
DIP-23/SOP-23
DIP-24
DIP-25
DIP-Q25A
SDIP-26
DIP-27
DIP-29
SOP-30
SOP-37
DIP-T46A
IGBT Module
Automobile module
Industrial Module
AC-DC Converter
SSR Flyback Controller IC
PSR Flyback Controller IC
Synchronous Rectifier IC
Non-isolated BUCK/BUCK-BOOST IC
PFC IC
Fast Charging IC
Power Bank Fast Charger IC
Car Charger IC
AC-DC Fast Charging Protocol IC
DC-DC Converter
DC-DC Converter IC
PoE IC
LED Lighting Driver
Dimming LED Lighting Driver
Non-dimming LED Lighting Driver
Automotive LED Driver
Gate Driver IC
Three-phase Half Bridge Driver
Single Half-bridge Driver
PFC IGBT Gate Driver
MEMS Sensor
Triaxial Acceleration Sensor
Six- Axis Inertial Sensor
Proximity Detection and Digital Ambient Light Sensor
Heart Rate Sensor
Silicon Microphone Sensor
MCU IC
8bit MCU
32bit MCU
Integrated Driver MCU
Digital Audio/Video
CD SERVO
Audio Decode
Audio Effects Processing
Intelligent Audio
ASIC
Bipolar PWM Controller
Bipolar DC-DC
LDO
Volume and Sound Control Circuit
DC Drive Circuit
Darlington Circuit
Logic & Switch & Level Shift
Operational Amplifier Circuit
Comparator
Reference IC
Linear Regulator
Audio Circuit
Interface ICs
LED Chip
GaN
GaN-Automotive lighting GaN-Display screen GaN-General lighting GaN-Landscape lighting
GaAs
GaAs-Agriculture & horticulture lighting GaAs-Automotive lighting GaAs-Display screen GaAs-Infrared GaAs-Landscape lighting
Smart Power Switches
Low-side Smart Power Switches
High-side Smart Power Switches
Low-Voltage Motor Driver
Automotive Low-Voltage Motor Driver
Consumer & Industrial Low-Voltage Motor Driver
Applications
Home Appliances
Outdoor Air Conditioner Indoor Air Conditioner Washing Machine Refrigerator Fan Smoke Exhauster Air Purifiers Dishwasher Pump Small Home Appliances Electric Tools Water Pump Relay Driver DC Lamp Driver Step Motor Driver Magnet Valve DC Motor Household Appliances Air conditioner fan Air condition compressor Refrigerator compressor Variable Frequency Blender Vacuum cleaner Fan compressor
Industrial
Electric Vehicle Inverter E-bike Charger Electric Tools Electric Welder Motor Inverter Walkie-talkies Low Voltage Half Bridge Drive Brushless DC Fan Brushless DC Motor Communication Base Station Security Camera Low Power Inverter Photovoltaic Inverter Industrial sewing machine Motor Driver E-bike controller Industrial Servo Water meter&electric meter&gas meter Electric power steering system Starting motor Power factor correction（PFC）
LED Lighting
LED Lamp Ceiling Lamp Down Lamp Street Light Bulb Lamp T5/T8 LED Lamp AC Input LED Lighting Dimming LED Driver Various LED Lighting Applications Recessed Light  GU10 LED Spotlight Car LED headlights DC Input LED Lighting LED Driver Power Supply
Automotive
Car-mounted Charger New Energy Vehicle Drive Automobile air conditioning compressor Car window Sunroof Seat Tailgate Automotive EPS System Body Domain Controller Chassis Electronic Control System Powertrain Automotive Air Conditioning Automotive Suspension
Consumer
AC-DC SMPS DC-DC Power Inverter LCD Driver Charger Multi-function Remote Control High-voltage H-bridge PWM Driver Personal Medicine Equipment Password Lock Flat Panel Monitor Adaptor Wrist Strap Mobile Phone Accessories Microprocessors Protection Regulator Circuit Mobile Power Supply Audio Equipment Self-learning Remote Control Mobile Phone Somatosensory Remote Control Navigator Remote Control Air Conditioning Controller Motor Control Power Management Smart Meters Panel Display Wireless Node HID Office Automation The Internet of Things Module Electronic Cigarette PC small serve motor control Portable Energy Storage Power Supply Power Tool Battery Pack Emergency Power Supply High Brightness Dischange Lamp
Audio-visual
CD Player Car Audio Personal Audio MIC Sound Processing Voice System Processing Audio Processing System Soundbar Switch Power Supply PDP TV
LED Chip
Digital product Phone Backlight Display screen Landscape lighting General lighting Digital tube Mobile lighting Agriculture & horticulture lighting Automative Lighting Traffic light Stage light Security Remote control Optocoupler Electronic whiteboard
Support
Service & Support Sales Office
Quality
SGS Report Packages Green Products Quality Policy Environment Policy Quality Management System Quality Certificate RoHS REACH Declaration of Metal Conflict-Free Green Proposal
Investor Relations
Join us
Join us Social Recruitment Campus Recruitment In Silan
About Silan
About Silan News Social Responsibility Contact Us
中
Mailbox verification
Your email:
Verification Code:
Discrete Divice
LVMOS
Planar LVMOS Normal Trench LVMOS Split Gate Trench LVMOS Automotive MOSFET
HVMOS
Planar HVMOS Multi-Epi DPMOS Trench DPMOS
IGBT
Planar IGBT Trench IGBT SiC Hybrid IGBT RC IGBT
SiC
SiC MOS
Diode
FRD
IPM
DIP2V/SOP2V
DIP-23/SOP-23
DIP-24
DIP-25
DIP-Q25A
SDIP-26
DIP-27
DIP-29
SOP-30
SOP-37
DIP-T46A
IGBT Module
Automobile module
Industrial Module
AC-DC Converter
SSR Flyback Controller IC
PSR Flyback Controller IC
Synchronous Rectifier IC
Non-isolated BUCK/BUCK-BOOST IC
PFC IC
Fast Charging IC
Power Bank Fast Charger IC
Car Charger IC
AC-DC Fast Charging Protocol IC
DC-DC Converter
DC-DC Converter IC
PoE IC
LED Lighting Driver
Dimming LED Lighting Driver
Non-dimming LED Lighting Driver
Automotive LED Driver
Gate Driver IC
Three-phase Half Bridge Driver
Single Half-bridge Driver
PFC IGBT Gate Driver
MEMS Sensor
Triaxial Acceleration Sensor
Six- Axis Inertial Sensor
Proximity Detection and Digital Ambient Light Sensor
Heart Rate Sensor
Silicon Microphone Sensor
MCU IC
8bit MCU
32bit MCU
Integrated Driver MCU
Digital Audio/Video
CD SERVO
Audio Decode
Audio Effects Processing
Intelligent Audio
ASIC
Bipolar PWM Controller
Bipolar DC-DC
LDO
Volume and Sound Control Circuit
DC Drive Circuit
Darlington Circuit
Logic & Switch & Level Shift
Operational Amplifier Circuit
Comparator
Reference IC
Linear Regulator
Audio Circuit
Interface ICs
LED Chip
GaN
GaN-Automotive lighting GaN-Display screen GaN-General lighting GaN-Landscape lighting
GaAs
GaAs-Agriculture & horticulture lighting GaAs-Automotive lighting GaAs-Display screen GaAs-Infrared GaAs-Landscape lighting
Smart Power Switches
Low-side Smart Power Switches
High-side Smart Power Switches
Low-Voltage Motor Driver
Automotive Low-Voltage Motor Driver
Consumer & Industrial Low-Voltage Motor Driver
Discrete Divice
LVMOS
Planar LVMOS Normal Trench LVMOS Split Gate Trench LVMOS Automotive MOSFET
HVMOS
Planar HVMOS Multi-Epi DPMOS Trench DPMOS
IGBT
Planar IGBT Trench IGBT SiC Hybrid IGBT RC IGBT
SiC
SiC MOS
Diode
FRD
IPM
DIP2V/SOP2V
DIP-23/SOP-23
DIP-24
DIP-25
DIP-Q25A
SDIP-26
DIP-27
DIP-29
SOP-30
SOP-37
DIP-T46A
IGBT Module
Automobile module
Industrial Module
AC-DC Converter
SSR Flyback Controller IC
PSR Flyback Controller IC
Synchronous Rectifier IC
Non-isolated BUCK/BUCK-BOOST IC
PFC IC
Fast Charging IC
Power Bank Fast Charger IC
Car Charger IC
AC-DC Fast Charging Protocol IC
DC-DC Converter
DC-DC Converter IC
PoE IC
LED Lighting Driver
Dimming LED Lighting Driver
Non-dimming LED Lighting Driver
Automotive LED Driver
Gate Driver IC
Three-phase Half Bridge Driver
Single Half-bridge Driver
PFC IGBT Gate Driver
MEMS Sensor
Triaxial Acceleration Sensor
Six- Axis Inertial Sensor
Proximity Detection and Digital Ambient Light Sensor
Heart Rate Sensor
Silicon Microphone Sensor
MCU IC
8bit MCU
32bit MCU
Integrated Driver MCU
Digital Audio/Video
CD SERVO
Audio Decode
Audio Effects Processing
Intelligent Audio
ASIC
Bipolar PWM Controller
Bipolar DC-DC
LDO
Volume and Sound Control Circuit
DC Drive Circuit
Darlington Circuit
Logic & Switch & Level Shift
Operational Amplifier Circuit
Comparator
Reference IC
Linear Regulator
Audio Circuit
Interface ICs
LED Chip
GaN
GaN-Automotive lighting GaN-Display screen GaN-General lighting GaN-Landscape lighting
GaAs
GaAs-Agriculture & horticulture lighting GaAs-Automotive lighting GaAs-Display screen GaAs-Infrared GaAs-Landscape lighting
Smart Power Switches
Low-side Smart Power Switches
High-side Smart Power Switches
Low-Voltage Motor Driver
Automotive Low-Voltage Motor Driver
Consumer & Industrial Low-Voltage Motor Driver
SDH771XRG
NON-ISOLATED BUCK LED CONSTANT CURRENT DRIVER IC
Description Main feature Product specification classification Internal block diagram Technical documentation Relevant package outline drawing

     The SDH771XRG is a high accuracy LED constant current driver IC, it is applicable to non-isolated buck LED constant current power system with full AC input voltage range of 85VAC~265VAC.

    The SDH771XRG creatively integrates a rectifier bridge, 500V high-voltage power MOSFET, and a 600V freewheeling diode, which greatly simplifies the requirements for peripheral device; moreover, it integrates a high-voltage power supply circuit, it is able to supply power to itself without any startup resistor and auxiliary winding, and at the same time, a conventional external VCC power supply capacitor is omitted, which greatly shortens the startup time as well as saves the system cost.

    The SDH771XRG works in inductor current boundary conduction mode, it uses a unique high-accuracy current sense technology, can achieve high constant current accuracy and excellent line/load regulation. It provides various protections, such as output short/open circuit protection, cycle-by-cycle over current protection, over temperature regulation, and open circuit protection for sensing resistor, which greatly improves the system safety and reliability. The open-circuit protection voltage can be set externally through the ROVP pin.


Main feature

  • Integrated bridge rectifier

  • Integrated 600V ultra-fast recovery diode

  • Available 500V high voltage power MOSFET in one package with stable performance

  • Integrated high-voltage power supply, without the need for any    external starting resistor and VCC capacitor

  • Accurate  constant-current output (<±3%) to drive LEDs

  • Output short/open circuit protection

  • Open circuit protection threshold value external adjusted, strong resistance to moisture and interference

  • Over temperature regulation

  • Cycle-by-cycle over current protection

  • No auxiliary winding


Ordering Information
Product Name Package form Marking Hazardous Substance Control Packing Type Remarks
SDH7711BRGTR ASOP-7 / Halogen free Tape&Reel
SDH7711ARGTR ASOP-7 / Halogen free Tape&Reel
Block Diagram

SDH771XRG 英文.png

Documents
title Types of Size (KB) date Download the latest English version
SDH771XRG 0 2026-09-24 SDH771XRG Brief Datasheet
Packages
ASOP-7
ASOP-7