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WS3232 Datasheet, PDF (1/7 Pages) Shenzhen Winsemi Microelectronics Co., Ltd – WS3232 High PF PSR Constant Current LED Driver
WS3232
WS3232 High PF PSR Constant Current LED Driver
Features
� ±5% LED Current Accuracy
� Primary-side Sensing and Regulation Without
TL431 and Opto-coupler
� No Auxiliary Winding For Sensing And Supplying
� High Power Factor Correction
� QR mode
� 600V MOS integrated
� Ultra low operating current
� LED Open/Short Circuit Protection
� CS Resistor Short Circuit Protection
� VCC over voltage protection & under voltage
lockout( UVLO)
� Over Temperature Protection
Applications
� GU10 LED driver
� LED spot light
� Other LED lighting
General Description
WS3232 is a high PF 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 WS3232 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,
WS3232 realizes ±5% accuracy of LED current along with
excellent line and load regulation.
WS3232 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.
WS3232 is available in DIP-8 package.
Typical Application Circuit
NP
NS
AC
1 VCC
2 NC
3 COMP
4 CS
GND 8
GND 7
D6
D5
W/T-D036-Rev.A/0 Dec.2013
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