heat protection for LM7805

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    iqbal hussain

    I am using LM7805 for GLCD it heats up too up within 5 seconds. I could not allow it for one minute, what could I do as input voltage is 18V Dc. I have to drive GLCD plz help?

    Ligo George

    You may use heat sink and / or cooling fan.. but the best solution is to reduce input voltage.

    If you can’t reduce the input voltage, you can use switched mode buck converters. Following link may help you.

    DC to DC Adjustable Buck Converter



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