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Tiny USB Li-Po battery charger

Posted on Thursday, December 15th, 2011 in project logs by DP

This is a tiny, easy to make USB Lithium-Polymer battery charger. It’s based on the MAX1555 charger IC.

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6 Responses to “Tiny USB Li-Po battery charger”

  1. ewertz says:

    No “Read more…” or link-to-forum….?

  2. Drone says:

    I was under the impression a proper USB charger needs to communicate with the USB host to ensure it will supply the full 500mA available from a USB 2.0 port. This MAX1555 part seem incapable of doing this – and off hand I don’t know of another that can.

  3. Hendrik Lipka says:

    The MAX1555 charges with just 100mA when USB-powered. When it is used with an external supply (which cannot be done with the circuit linked above) it charges with 280mA.

  4. Paul says:

    Sweet, my post ;)
    I’ll have one wit ha Microchip up in one or two weeks I hope.
    Real PCB’s on the way for that thought. Max1555 is too expensive and hard to get.

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