Datasheet Summary
WS9221BProductDescription
High Precision PSR Constant Current LED Driver
Features
- Built-in650V Power MOSFET
- Constant current control without secondary sense and feedback circuit.
- No Auxiliary winding for sensing and supplying
- Ultra low operating current to improve efficiency
- Universal input voltage
- ±5% LED current accuracy
- LED short and open circuit protection
- CS resistor short circuit protection
- VCC under-voltage protection
- Over temperature protection
- Available in SOP-7 package
Applications
- GU10/E27 LED bulb, spot light
- Other LED lighting
Description
The WS9221B is a high precision primary-side feedback and regulation controller for LED lighting, it operates...