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WINSEMI - Active PFC Non-isolated Buck LED Driver

Numéro de référence WS3412
Description Active PFC Non-isolated Buck LED Driver
Fabricant WINSEMI 
Logo WINSEMI 





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WS3412 fiche technique
WS3412 Product Description
WS3412 Active PFC Non-isolated Buck LED Driver
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
Typical Application Circuit
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 SOP 8
package, producing up to 260mA output current.
It can achieve excellent constant current performance with
very few external components.
The WS3412 offers rich protection functions, including over
voltage protection, LED short circuit protection, cycle by cycle
current limiting, dynamic temperature compensation, over
temperature protection and soft start.
WS3412 consumes very low start current and operation
current, driving LED efficiently under universal AC
input(85VAC~265VAC).
WS3412 is available in SOP8 package.
5D
CS 8
6D
CS 7
3 VCC
FB 4
AC
2 GND
COMP 1
LED+
LE D-
WIN SEM I M ICROELECTRON ICS
WIN SEM I M ICROELECTRON ICS
WIN SEM I M ICROELECTRON ICS
Copyr ight@Winsemi Microelectronics Co., Ltd., All right reserved.
WIN SEM I M ICROELECTRON ICS
W/T-S031-Rev.A/ 0 Nov.2013
WIN SEM I M ICROELECTRON ICS
0214

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