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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
SDH771XTG
Non-isolated BUCK LED CONSTANT CURRENT driveR IC
Description Main feature Product specification classification Internal block diagram Technical documentation Relevant package outline drawing

      The SDH771XTG is a high- precision 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 SDH771XTG integrates 500V high-voltage power MOSFETs and 600V freewheeling diodes, and has built-in high-voltage power supply circuit, which can realize the independent power supply of the IC without startup resistor and auxiliary winding. At the same time, the conventional external VCC power supply capacitor is omitted, which greatly saves system cost while speeding up system startup. The SDH771XTG works in inductor current boundary conduction mode, it uses a unique high-precision current sense technology, combined with internal compensation to achieve high constant current accuracy and excellent line/load regulation.

      The SDH771XTG provides various protections, such as output short circuit protection, output open circuit protection, cycle-by-cycle over current protection, over temperature regulation, and open circuit protection for sensing resistor, which greatly improves the safety and reliability of the system. The open-circuit protection voltage can be set externally through the ROVP pin.


Main feature

  • Co-packaged 500V high-voltage power MOSFET with stable performance

  • Integrated 600V ultra-fast recovery diode

  • Integrated high-voltage power supply, no startup resistor or VCC capacitor

  • Accurate constant current (<±3%) for LED

  • Output open/short circuit protection

  • Open circuit protection threshold value external adjustable

  • 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
SDH7711ATG SOP-7-225-1.27 / Halogen free Tube
SDH7711ATGTR SOP-7-225-1.27 / Halogen free Tape&Reel
SDH7711TG SOP-7-225-1.27 / Halogen free Tube
SDH7711TGTR SOP-7-225-1.27 / Halogen free Tape&Reel
SDH7712TG SOP-7-225-1.27 / Halogen free Tube
SDH7712TGTR SOP-7-225-1.27 / Halogen free Tape&Reel
Block Diagram

SDH771XTG英文.png

Documents
title Types of Size (KB) date Download the latest English version
SDH771XTG 0 2026-08-28 SDH771XTG Brief Datasheet