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    首页产品索引AT9933

    AT9933

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    HYSTERIC BOOST-BUCK (CUK) LED DRIVER IC

     

    产品信息

    The AT9933 is a variable frequency PWM controller IC, designed to control an LED lamp driver using a low-noise boost-buck (Ćuk) topology. The AT9933 uses patent-pending hysteretic current-mode control to regulate both the input and the output currents. This enables superior input surge immunity without the necessity for complex loop compensation. Input current control enables current limiting during startup, input under-voltage and output overload conditions. The AT9933 provides a low-frequency PWM dimming input that can accept an external control signal with a duty cycle of 0 - 100% and a high dimming ratio.The AT9933 based LED driver is ideal for automotive LED lamps. The part is rated for up to 125°C ambient temperatures and is AEC-Q100 compliant.

      Constant current LED Driver

      Steps input voltage up or down

      Low EMI

      Variable frequency operation

      Internal 75V linear regulator

      Input and output current sensing

      Input current limit

      Enable & PWM dimming

      Ambient temperature rating up to 125°C

      Meets AEC-Q100 requirements

    电路图、引脚图和封装图

    在线购买

    型号制造商描述购买
    AT9933LG-GATSHEATSINK30X30X15MMR-TABT412 立即购买

    应用案例更多案例

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