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WS3240 Datasheet(PDF) 1 Page - List of Unclassifed Manufacturers |
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WS3240 Datasheet(HTML) 1 Page - List of Unclassifed Manufacturers |
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1 / 8 page  WS3240 ProductDescription WINSEMI MICROELECTRONICS WINSEMI MICROELECTRONICS WINSEMI MICROELECTRONICS WINSEMI MICROELECTRONICS WINSEMI MICROELECTRONICS Copyright@Winsemi Microelectronics Co., Ltd., All right reserved. 1201 Features Built-in 650V UHV Power MOS LED Constant Current: ±5% Fixed Primary Peak Current: 185mA Without the Secondary winding Start up time less than 100ms High precision constant current regulation due to patented CC control Built-in line compensation Ultra low operation current Maximum power 4W LED open/short protection Floating pin protection Excellent EMI performance with PFM control Cycle-by-cycle current limit Built-in leading Edge Blanking VDD Under Voltage Lockout（UVLO） Built-in over temperature protection Applications LED lighting Description WS3240 is a high precision primary side feedback constant current LED driver, suitable for flyback isolated LED in sub 4W power range at universal AC input. It operates in discontinuous current mode. WS3240 integrates 650V power MOS. It operates in primary side sensing and regulation, without a secondary feedback circuit, also need not the auxiliary transformer winding detection and power supply, only need few peripheral components can realize constant current, greatly saves the cost and size of the system. The start time of WS3240 is less than 100ms at universal AC input with the high voltage start technology, realizing instant bright of the LED lamp. The current precision is less than ± 5% with high precision current sampling circuit and line compensation. With patented constant current controlling mode, excellent linear regulation is achieved. WS3240 provides a variety of comprehensive protection mode, including: cycle by cycle current limit protection(OCP), LED open/short circuit protection, under voltage protection and clamping, over temperature protection, pin floating protection etc.. WS3240 is offered in TO-92 package. High Precision PSR LED Constant Current Driver |
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