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WS9445 - Non-isolated Buck Offline LED Driver

Features

  • Critical Conduction Mode Operation.
  • Internal 600V 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 Details

Part number WS9445
Manufacturer Winsemi
File Size 583.05 KB
Description Non-isolated Buck Offline LED Driver
Datasheet download datasheet WS9445 Datasheet

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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WS9445 Product Description Features  Critical Conduction Mode Operation  Internal 600V 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 WS9445 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 WS9445 integrates a 600V 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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