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WS9224 Datasheet(PDF) 1 Page - Shenzhen Winsemi Microelectronics Co., Ltd |
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WS9224 Datasheet(HTML) 1 Page - Shenzhen Winsemi Microelectronics Co., Ltd |
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1 / 7 page  WS9224ProductDescription WINSEMI MICROELECTRONICS WINSEMI MICROELECTRONICS WINSEMI MICROELECTRONICS WINSEMI MICROELECTRONICS WINSEMI MICROELECTRONICS Copyright@WinsemiMicroelectronics Co.,Ltd.,All rightreserved 0328 Features Built-in 650V Power MOSFET Constant current control without secondary sense and feedback circuit. No Auxiliary winding for sensing and supplying Ultra low operating current to improve efficiency Universal input voltage ±5% LED current accuracy LED short and open circuit protection VCC under-voltage protection Over temperature protection Available in SOP-7 package Applications LED bulb, spot light Other LED lighting Description The WS9224 is a high precision primary-side feedback and regulation controller for LED lighting, it operates in constant current control mode and is designed to work in inductor current discontinuous conduction mode and especially suitable for fly back convertor under universal input. The WS9224 integrates 650V power MOSFET. Since adopting primary sense and feedback control technology, the secondary sense and feedback circuit is eliminated. The loop compensation components are also removed while maintaining stability overall operating conditions.The operating current is very low, and it doesn’t 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 proprietary high accurate current sense method, the WS9224 realizes ±5% accuracy of LED current along with excellent line and load regulation. The WS9224 offers rich protection functions including LED open/short circuit protection, over-temperature protection, VCC under voltage protection. Typical Application High Precision PSR Constant Current LED Driver |
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