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WS3221 - High Precision PSR Constant Current LED Driver

General Description

WS3221 High Precision PSR Constant Current LED Driver

Key Features

  • Built-in 650V Power MOSFET.
  • ±5% LED Current Accuracy.
  • Primary-side Sensing and Regulation Without TL431 and Opto-coupler.
  • No Auxiliary Winding For Sensing And Supplying.
  • Ultra low operating current.
  • LED Open/Short Circuit Protection.
  • External programmable LED Open voltage.
  • CS Resistor Short Circuit Protection.
  • VCC Clamp & under voltage lockout( UVLO).
  • Over Temperature Protection.
  • Temperature compensation technology.

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Datasheet Details

Part number WS3221
Manufacturer WINSEMI
File Size 185.82 KB
Description High Precision PSR Constant Current LED Driver
Datasheet download datasheet WS3221 Datasheet

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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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WS3221 Product Description WS3221 High Precision PSR Constant Current LED Driver Features ■ Built-in 650V Power MOSFET ■ ±5% LED Current Accuracy ■ Primary-side Sensing and Regulation Without TL431 and Opto-coupler ■ No Auxiliary Winding For Sensing And Supplying ■ Ultra low operating current ■ LED Open/Short Circuit Protection ■ External programmable LED Open voltage ■ CS Resistor Short Circuit Protection ■ VCC Clamp & under voltage lockout( UVLO) ■ Over Temperature Protection ■ Temperature compensation technology Applications ■ GU10 LED driver ■ LED spot light ■ Other LED lighting General Description WS3221 is a high precision primary-side feedback and regulation controller for LED lighting, it operates in constant current control mode and is designed to work in inductor current disco