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WS9441 - Non-isolated Buck Offline LED Driver

Datasheet Summary

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.

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Datasheet preview – WS9441

Datasheet Details

Part number WS9441
Manufacturer Winsemi
File Size 398.97 KB
Description Non-isolated Buck Offline LED Driver
Datasheet download datasheet WS9441 Datasheet
Additional preview pages of the WS9441 datasheet.

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Full PDF Text Transcription

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WS9441 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 Applications  LED Bulb Lights  LED Panel Lights  LED Strings Typical Application Circuit Non-isolated BuckOffline LED Driver Description The WS9441 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 WS9441 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.
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