WS3230 Datasheet, PDF(1/7 Page) Shenzhen Winsemi Microelectronics Co., Ltd – WS3230 High PF PSR Constant Current LED Driver

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WS3230 Datasheet, PDF (1/7 Pages) Shenzhen Winsemi Microelectronics Co., Ltd – WS3230 High PF PSR Constant Current LED Driver

WS3230

WS3230 High PF PSR Constant Current LED Driver

Features

ï¿½ Â±5% LED Current Accuracy

ï¿½ Primary-side Sensing and Regulation Without

TL431 and Opto-coupler

ï¿½ No Auxiliary Winding For Sensing And Supplying

ï¿½ High Power Factor Correction

ï¿½ Ultra low operating current

ï¿½ LED Open/Short Circuit Protection

ï¿½ CS Resistor Short Circuit Protection

ï¿½ VCC over voltage protection & under voltage

lockout( UVLO)

ï¿½ Over Temperature Protection

Applications

ï¿½ GU10 LED driver

ï¿½ LED spot light

ï¿½ Other LED lighting

General Description

WS3230 is a high precision QR primary-side feedback

and regulation controller for LED lighting, optimized for

flyback converter with the output power less than 30W.

Since adopting primary sense and feedback control

technology, the secondary sense and feedback circuit is

eliminated. And WS3230 does not need the auxiliary

winding for sensing the output current and supplying the

chip. The low component counts and small system size

are realized.

Since using the high accurate current sense method,

WS3230 realizes Â±5% accuracy of LED current along with

excellent line and load regulation.

WS3230 offers comprehensive protection including

Cycle-by-Cycle current limiting (OCP), LED open/short

circuit protection, CS resistor short circuit protection, VCC

UVLO,OVP and Clamp, and over temperature protection.

WS3230 is available in SOT23-5 package.

Typical Application Circuit

5 VCC

G ate 2

4 Comp

1 GND

CS 3

W/T-Y026-Rev.A/0 Aug.2013

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