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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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HV9921 데이터시트(PDF) 1 Page - Microchip Technology |
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HV9921 데이터시트(HTML) 1 Page - Microchip Technology |
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1 / 19 page  2014 Microchip Technology Inc. DS20005311A-page 1 HV9921/HV9922/HV9923 Features • Constant output current: - HV9921 – 20mA - HV9922 – 50mA - HV9923 – 30mA • Universal 85 - 264VAC operation • Fixed off-time buck converter • Internal 475V power MOSFET Applications • Decorative lighting • Low power lighting fixtures Description HV9921/HV9922/HV9923 are pulse-width modulated (PWM), high-efficiency, LED driver control ICs. They allow efficient operation of LED strings from voltage sources ranging up to 400VDC. HV9921/22/23 include an internal high voltage switching MOSFET controlled with fixed off-time (TOFF) of approximately 10μs. The LED string is driven at constant current, thus providing constant light output and enhanced reliability. The out- put current is internally fixed at 20mA for HV9921, 50mA for HV992, and 30mA for HV9923. The peak cur- rent control scheme provides good regulation of the output current throughout the universal AC line voltage range of 85 to 264VAC or DC input voltage of 20 to 400V. 3-Pin Switch-Mode LED Lamp Driver ICs |
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유사한 설명 - HV9921 |
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