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矽力杰內置MOS恒流驅動方案，美國矽力杰，SY58203，SY58294，General Description SY58294 General Description The SY58294 is a 15W single stage Buck PFC controller targeting at LED lighting applications. It integrates a 500V MOSFET to decrease physical volume. It adopts the proprietary control architecture to achieve an accurate regulation of LED current, unity power factor, and quasi-resonant valley turn-on high efficiency operation. It integrates open/short LED protection and eliminates the need for opto-coupler, thus minimizing the component count and board size. Features * Integrated 500V MOSFET * Valley turn-on of the MOSFET to achieve low switching losses * 0.3V current sense reference voltage leads to a lower sense resistance thus a lower conduction loss * Low start up current: 15μA typical * Reliable short LED and Open LED protection * Power factor >0.90 with single-stage conversion. *Maximum frequency limit: 200kHz *Compact package: SO8
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