Winsemi WS9221B
The WS9221B 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 discontinuous conduction mode and especially suitable for flyback convertor under universal input. The output power of system is recommended to less than 3W. The WS9221B integrates 650V power MOSFET.| Part No. | WS9221B |
|---|---|
| Datasheet | WS9221B Download |
| Manufacturer |  Winsemi |
| Description | High Precision PSR Constant Current LED Driver |
| Buy | Stock & Price |
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 integrates 650V power MOSFET.
