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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
SD682X_Datasheet
Description Main feature Product specification classification Internal block diagram Relevant package outline drawing

The SD682X is a single stage primary side regulation (PSR) power factor correction (PFC) controller, built-in high voltage power MOSFET, specially designed for flyback LED driver. 

The Device adopts constant on time operation to achieve high power factor. 

The SD682X provides accurate constant current control and operates in boundary conduction mode (BCM) with high efficiency. The Device adopts primary side regulation eliminating the opto-couple, secondary feedback control and loop compensation for reducing design and cost. 

Constant TON is adopted for high PF; due to patented close-loop control technology pin COMP and peripheral compensation network are unnecessary, and output current will not be affected by moisture or leakage current; thanks to patented THD technology, low THD is obtained without optimized THD network in most applications. 

The SD682X provides completed protections such as short LED protection, open LED protection and over temperature protection, etc.


Main feature

  • PSR flyback topology

  • Boundary Conduction Mode

  • Patented close-loop technology to prevent moisture and leakage, peripheral compensation network is unnecessary

  • Patented THD optimized technology without need of peripheral optimized network

  • Built-in 650V high voltage power MOSFET

  • Leading edge blanking

  • Constant on time controlVC

  • C under voltage lockout

  • Over temperature protection

  • Cycle by cycle current limiting

  • Peak current compensation

  • Short LED protection and Open LED protection


Ordering Information
Product Name Package form Marking Hazardous Substance Control Packing Type Remarks
SD6821S SOP-7-225-1.27 21 Halogen free Tube
SD6821STR SOP-7-225-1.27 21 Halogen free Tape & reel
SD6822S SOP-7-225-1.27 8S Halogen free Tube
SD6822STR SOP-7-225-1.27 8S Halogen free Tape & reel
SD6824S SOP-7-225-1.27 26 Halogen free Tube
SD6824STR SOP-7-225-1.27 26 Halogen free Tape & reel
SD6824D DIP-7-300-2.54 28 Halogen free Tube
SD6827D DIP-7-300-2.54 2D Halogen free Tube
Block Diagram

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