General Description

The WS3412 is designed for active PFC non-isolated buck LED driver. It operates at valley switching mode with high efficiency, low EMI and High PF. The output current automatically adapt to the variation of the inductance and the output voltage.The truly constant current LED is realized. The WS3412 integrates 550V power MOSFET, using SOP8 package, producing up to 260mA output current. It can achieve excellent constant current performance with very few external components.

Features

High Power Factor Correction, Low Total Harmonic Distortion

Dynamic Temperature Compensation

550V Power MOSFET Integrated

No Auxiliary Winding For Supplying

SOP8 Package,Up To 260mA Output Current

Valley Switching, High efficiency,Low EMI

Automatic Compensate the Inductance Variation

Automatic Adapt to the Change of Output Voltage

LED Short Circuit Protection

Over Voltage Protection

Over Temperature Protection

Open Circuit Protection

Few External Components

Applications

LED Driver Supply