www.winsemi.com Tel : +86-755-8250 6288

Fax : +86-755-8250 6299

2/8

WINSEMI MICROELECTRONICS

WINSEMI MICROELECTRONICS

WINSEMI MICROELECTRONICS

WINSEMI MICROELECTRONICS

WINSEMI MICROELECTRONICS

Pin Configuration and Marking Information

The WS3412H is available in SOP7 Package，the top marking is shown as below:

Pin Definition

Name

Pin No.

Description

COMP

1

Loop Compensation Node. This pin connects a capacitor to GND for stabilization of the

control loop, achieving accurate LED current, high Power Factor and low THD.

GND

2

Ground.

VCC

3

Power Supply Pin. Connect a bypass capacitor from this pin to GND.

FB

4

Feedback Voltage Input Pin. This pin detects the inductor demagnetization signal and the

output voltage.

D

5/6

Internal HV Power MOSFET Drain.

CS

7

Current Sense Pin. Connect a resistor to GND to sense the inductor current.

Internal Block Diagram

WS3412HS7P

A：Product Code

X：Internal Code

BCY：Internal Code For QC

YMX：D/C