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    首页产品索引HV9803

    HV9803

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    LED DRIVER IC WITH AVERAGE-MODE CONSTANT CURRENT CONTROL

     

    产品信息

    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

    电路图、引脚图和封装图

    在线购买

    型号制造商描述购买
    HV9803LG-GSiTime有源晶振 3.3V ±20ppm 68.665MHz SMD3225_4P 立即购买

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