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Topic: Some DIY friendly LiIon charger designs (Read 876 times) previous topic - next topic

Some DIY friendly LiIon charger designs


I've made some open source DIY friendly designs for USB Lithium battery chargers based on MAX155X and MCP7383: ... -chargers/


    * home PCB manufacturing friendly
    * selectable USB/external DC power source - if you don't need USB, just chop off the connector and use DC pads
    * for MAX155X parts - charging current selectable by solder jumper
    * for MAX1555 and MCP73831 - charging and battery full indication LEDS; Note: MAX1555 charger indication relies on low mosfet gate threshold voltage - below (5V - Vfwdled), I've used 702 mosfets.
    * for MCP7383 - charging current selectable by two resistors