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    首頁產(chǎn)品索引HV9803

    HV9803

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    LED DRIVER IC WITH AVERAGE-MODE CONSTANT CURRENT CONTROL

     

    產(chǎn)品信息

    The HV9803 is an open loop average-mode current control?LED driver IC operating in a constant off-time mode. The IC?features ±2% current accuracy, tight line and load regulation?of the LED current without any need for loop compensation?or high-side current sensing. Its auto-zero circuit cancels the?effect of both the input offset voltage and the propagation?delay in the current sense comparator. ?The HV9803 can be powered from a 7.0~13.2V supply. The?IC features fast PWM dimming response. The linear dimming?
    input LD can accept a reference voltage up to 2.5V. ?The IC is equipped with a current limit comparator for?hiccup-mode output short circuit protection. It also features a?programmable input under-voltage shutdown.

      Fast average current control

      Correction for propagation delay and offset voltage

      Fixed off-time switching mode

      Linear dimming input

      PWM dimming input

      Output short circuit protection with programmable?skip mode

      Input under-voltage shutdown

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    型號制造商描述購買
    HV9803LG-GSiTime有源晶振 3.3V ±20ppm 68.665MHz SMD3225_4P 立即購買

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