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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
DIP-23/SOP-23
DIP-24
DIP-25
DIP-26
DIP-27
DIP-29
SOP30
SOP-37
IGBT Module
Industrial Module
Automobile 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
General Lighting LED Driver
Intelligent Lighting LED Driver
Gate Driver IC
Three-phase Half Bridge Driver
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
Hall
Display Drive Circuit
DC Drive Circuit
Gate Drive Circuit
Darlington Circuit
Logic circuit
Optional Amplifier
Comparator
Reference IC
Linear Regulator
Audio Circuit
Logic & Switches
Gate
Buffer/Driver
Voltage Level Translators
Flip-flops/Latches/Registers
Other Logic IC
LED Chip
GaN
GaAs
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
DIP-23/SOP-23
DIP-24
DIP-25
DIP-26
DIP-27
DIP-29
SOP30
SOP-37
IGBT Module
Industrial Module
Automobile 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
General Lighting LED Driver
Intelligent Lighting LED Driver
Gate Driver IC
Three-phase Half Bridge Driver
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
Hall
Display Drive Circuit
DC Drive Circuit
Gate Drive Circuit
Darlington Circuit
Logic circuit
Optional Amplifier
Comparator
Reference IC
Linear Regulator
Audio Circuit
Logic & Switches
Gate
Buffer/Driver
Voltage Level Translators
Flip-flops/Latches/Registers
Other Logic IC
LED Chip
GaN
GaAs
SDH792XS _Datasheet
Description Main feature Product specification classification Internal block diagram Relevant package outline drawing

SDH792XS is designed for non-isolated LED driving with built-in high voltage power MOSFET and high voltage JFET. With this structure, inductor current is sensed and closed-loop is formed with the internal error amplifier for high constant current accuracy and high input/output regulation rate. Also, high PF in full range is available due to its own PFC control. Boundary Conduction mode is adopted for decreasing switching loss and improving the conversion efficiency.

SDH792XS can realize high power factor without any external integral capacitor.

Peripheral VCC pin and VCC capacitor (to GND) are unnecessary. 

Over voltage protection threshold value is set through pin ROVP, and ENABLE is available. 

SDH792XS integrates various protections, such as output open circuit protection, output short circuit protection, cycle-by-cycle over current protection, and over temperature protection.

SDH792XS has ultra low start-up current and operating current, is able to high effectively drive highlight LED in full voltage input range.


Main feature


  • Proprietary constant control method (Patent)

  • High power factor without any external compensation capacitor (Patent)

  • Built-in high-voltage power supply

  • No peripheral VCC pin and VCC capacitor

  • Built-in high voltage power MOSFET and high voltage JFET

  • Constant current with high accuracy for LED (<±3%)

  • PF>0.7 in full voltage input range

  • Boundary-Conduction mode

  • LED short circuit protection

  • LED open circuit protection

  • Over temperature protection

  • Over current protection

  • Internal current reduction in high temperature condition 

  • Low output ripple voltage


Ordering Information
Product Name Package form Marking Hazardous Substance Control Packing Type Remarks
SDH7921AS SOP-7-225-1.27 7921AS Halogen free Tube
SDH7921ASTR SOP-7-225-1.27 7921AS Halogen free Tape & reel
SDH7921S SOP-7-225-1.27 SDH7921S Halogen free Tube
SDH7921STR SOP-7-225-1.27 SDH7921S Halogen free Tape & reel
SDH7922S SOP-7-225-1.27 SDH7922S Halogen free Tube
SDH7922STR SOP-7-225-1.27 SDH7922S Halogen free Tape & reel
SDH7923S SOP-7-225-1.27 SDH7923S Halogen free Tube
SDH7923STR SOP-7-225-1.27 SDH7923S Halogen free Tape & reel
SDH7924S SOP-7-225-1.27 SDH7924S Halogen free Tube
SDH7924STR SOP-7-225-1.27 SDH7924S Halogen free Tape & reel
Block Diagram

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