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    首页产品索引HV9861A

    HV9861A

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    HV9861A

     

    产品信息

    The HV9861A is a patented, average-mode, constant current control LED driver IC operating in a constant off-time mode. Unlike the HV9910B, this control IC does not produce a peak-to-average error, and therefore greatly improves the accuracy, line and load regulation of the LED current without any need for loop compensation or high-side current sensing. The output LED current accuracy is ±3%.The IC is equipped with a current limit comparator for hiccup-mode output short circuit protection. Internal over-temperature protection is provided. The internally regulated voltage (VDD) for the HV9861A is 7.5V.The IC can be powered from a 15 - 450V supply. A PWM dimming input is provided that accepts an external control TTL-compatible signal. The output current can be programmed by an internal 270mV reference, or controlled externally through a 0 - 1.5V dimming input.The IC is pin-to-pin compatible with the Supertex HV9910B and HV9961, and can be used as a drop-in replacement for many applications to improve the LED current accuracy and regulation.

      Fast average current control

      Programmable constant off-time switching

      PWM / linear dimming input

      Output short circuit protection with skip mode

      Ambient operating temperature -40°C to +125°C

      Pin-compatible with the HV9910B and HV9961

    电路图、引脚图和封装图

    在线购买

    型号制造商描述购买
    HV9861ANG-GSiTime有源晶振 SMD3225_4P 立即购买
    HV9861ALG-GATSHEATSINK30X30X10MML-TABT766 立即购买

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