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UCSR3651S 数据表(PDF) 8 Page - Unisonic Technologies |
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UCSR3651S 数据表(HTML) 8 Page - Unisonic Technologies |
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8 / 9 page  UCSR3651S CMOS IC UNISONICTECHNOLOGIESCO.,LTD 8 of 9 www.unisonic.com.tw QW-R129-010.A OPERATION DESCRIPTION (Cont.) Current Sensing and Leading Edge Blanking Cycle-by-cycle current limiting is offered in UTC UCSR3651S. The switch current is detected by a sense resistor into the CS pin. When the power switch is turned on, a turn-on spike will occur on this resistor. A 900ns leading-edge blanking is built in to avoid false-termination of the switching pulse so that the external RC filtering is no longer needed. Protection Control Good power supply system reliability is achieved with its comprehensive protection features including VDD over-voltage protection, VDD Clamp, GATE Clamp, Power on soft start, Cycle-by-cycle current limiting, short circuit protection, leading edge blanking, OTP and UVLO, etc. VDD is supplied by transformer auxiliary winding output. The output of UTC UCSR3651S is shutdown when VDD drops below VTH(OFF) and the power converter enters power on start-up sequence thereafter. |
类似零件编号 - UCSR3651S |
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类似说明 - UCSR3651S |
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