WS3411 Datasheet, PDF (1/8 Pages) Shenzhen Winsemi Microelectronics Co., Ltd – WS3411 Active PFC Non-isolated Buck LED Driver

WS3411 ProductDescription
Features
 Specially Optimized for the EMI
 Internal 500V Power MOSFET
 Active PFC for High Power Factor and Low THD
 Critical Conduction Mode Operation
 System Efficiency up to 95%
 Without auxiliary winding
 Excellent Line and Load Regulation
 ±3% LED Output Current Accuracy
 Thermal Regulation Function
 LED Short/Open Protection
 Current Sensing Resistor Open Protection
 Auto Fault Recovery
 Available in SOP7 Package
Applications
 E27 LED Bulb, Spot Light
 PAR30, PAR38 Lamp
 T8/T10 LED String
 Other LED Lighting
Typical Application
Non-isolated Buck APFC Offline LED Driver
Description
The WS3411 is a high precision non-isolated buck driver
with active PFC, specially designed for universal input offline
constant current LED lighting. The driver with on-chip PFC
circuit achieves high power factor and low THD. Operating in
critical conduction mode, the power MOSFET switching loss
is reduced and the inductor is fully utilized.
The WS3411 integrates a 500V power MOSFET. With
few external components, the LED output current can be
precisely controlled.
The WS3411 offers rich protection functions to improve
the system reliability, including LED open circuit protection,
LED short circuit protection, CS resistor open circuit
protection and cycle by cycle current limit. All the protection
functions are auto-recovery. The system reliability is further
improved by the thermal regulation function. The output
current is reduced when the driver is over temperature.
The WS3411 has ultra low start up current and ultra low
operating current.
The WS3411 is available in SOP7 Package
WINSEMI MICROELECTRONICS
WINSEMI MICROELECTRONICS
WINSEMI MICROELECTRONICS
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