WINSEMI WS3442A
The WS3442A is a high precision buck constant current LED driver. The device operates in critical conduction mode and is suitable for 85Vac~265Vac universal input offline LED lighting. The WS3442A integrates a 500V power MOSFET.| Part No. | WS3442A |
|---|---|
| Datasheet | WS3442A Download |
| Manufacturer |  WINSEMI |
| Description | Non-isolated Buck Offline LED Driver |
| Buy | Stock & Price |
FEATURES
● Critical Conduction Mode Operation● Internal 500V Power MOSFET
● No Auxiliary Winding
● Ultra Low Operating Current
● ±3% LED Output Current Accuracy
● Efficiency up to 93%
● LED Open Protection
● LED Short Protection
● Current Sensing Resistor Short Protection
● Thermal Regulation Function
● Available in SOP-7 Package and DIP-7 Package
APPLICATIONS
● LED Candle Light● LED Bulb, Spot Light
● T8/T10 LED String
● Other LED Lighting Non-isolated Buck Offline LED Driver
DESCRIPTION
The WS3442A integrates a 500V power MOSFET. The operating current of the IC is very low. So it doesn’t need the auxiliary winding for supplying the chip. It can achieve excellent constant current performance with very few external components, so the system cost and size are minimized. The WS3442A utilizes patent pending current control method. It can achieve precise output current and excellent line regulation. The driver operates in critical conduction mode, the output current does not change with the inductance and LED output voltage.
