Homemade iPhone Car Charger

Discussion in 'The Projects Forum' started by scol, Oct 1, 2012.

  1. scol

    Thread Starter New Member

    Aug 2, 2011
    2
    0
    Hi all,

    Decided to make myself a little project to build a fairly small and efficient self contained iPhone car charger so (12V DC - 5V 500mA DC).

    I'm wanting to use a MC34063 DC to DC converter chip in the design for some reason have some lying around.

    Anyone willing to help design the schematic - not my strong point.
    Thanks
    ~scol
     
  2. kc5tpa

    Member

    Sep 21, 2012
    48
    3
    http://www.ladyada.net/make/mintyboost/icharge.html

    Apple doesn't make it that easy.
     
  3. DickCappels

    Moderator

    Aug 21, 2008
    2,658
    632
    Play it safe and use an 7805 with a heatsink. They are rugged and with fewer parts, probably more reliable than the simplest 4063 supply.
     
  4. wayneh

    Expert

    Sep 9, 2010
    12,145
    3,055
    I can at least verify that this does work. I've made a couple of them. They get quite hot and probably self-limit the charging current, but mine have lasted for years.

    You'll need resistor dividers to apply a voltage onto the USB data lines, to fool the iDevice into accepting a charge. I think the mintyboost project has good details on what values to use.
     
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