Usb port power supply issues/ experiences

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  1. - 5th January 2015, 09:29 #2
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    pedja089
    pedja089 is offline Senior Member
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    Default Re: Usb port power supply issues/ experiences

    If you really want to do that you need buck/boost regulator, eg LTC3440.
    Another solution is to use boost regulator to boost 5V to 6V or so, followed by LDO to get clean 5V.
    But in most cases that is unnecessary, most LCD will work down to 4.5V, and up to 5.5V. Some pic work up to 6V.
    So you only need to sort out ESD on USB connector, there is no need for OV/UV protection.
    If you really want OV protection, you can use zener diode 5.2V 5W.
    Last edited by pedja089; - 5th January 2015 at 09:41.
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