12v dc usb conversion.

Discussion in 'The Projects Forum' started by tjeffords, Aug 15, 2014.

  1. tjeffords

    Thread Starter New Member

    Mar 8, 2013
    Im looking to make a converter that will have an input voltage of 12 v (have not tested for input amperage yet) and an output of 5v @ either 3 amps or 4.2 amps (current has still undetermined currently).

    I would like to make it from scratch but will settle for modifying a prefabricated curicut. With the prefabricated circut the only thing I can think of is using an old usb car charger but im unclear on how to increase the output amprage.

    If Its possible I will then build the curcits (~ 10 total units) and attach them into specific locations throughout my car.
  2. ScottWang


    Aug 23, 2012
    LM2679-5.0 - Simple Switcher 5A Step-Down Voltage Regulator with Adjustable Current Limit.