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WS9442P

Part Number	WS9442P
Manufacturer	Winsemi
Description	Non-isolated Buck Offline LED Driver
Published	Dec 13, 2016
Detailed Description	WS9442P Product Description Features  Critical Conduction Mode Operation  Internal 500V Power MOSFET  Gate Drive and ...
Datasheet	WS9442P PDF File

Overview

WS9442P Product Description Features  Critical Conduction Mode Operation  Internal 500V Power MOSFET  Gate Drive and No Auxiliary Winding  ±3% LED Current Accuracy  Efficiency up to 93%  LED Short Circuit Protection  LED Open Circuit Protection  Current Sense Resistor Short Protection  Thermal Regulation Function  External PWM Dimming Applications  LED Bulb Lights  LED Panel Lights  LED Strings Typical Application Circuit Non-isolated Buck Offline LED Driver Description The WS9442P is a high precision buck constant current LED driver and is applied to non-isolated buck LED power system with AC input voltage of 85VAC-265VAC.
The WS9442P integrates a 500V power MOSFET, and can achieve excellent constant current performance with very few external components, so the system cost and size are minimized.
The driver operates in critical conduction mode, and the output current does not change with the inductance and LED output voltage.
The operating curr...

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