Connect with us

5vdc to 3.8vdc step down

Discussion in 'General Electronics Discussion' started by StealthRT, Mar 30, 2013.

Scroll to continue with content
  1. StealthRT


    Sep 4, 2010
    Hey all i am in need of some help with stepping down a 5vdc to 3.8vdc so that i can power my phone.

    The battery that's powering the phone is rated at 3.8vdc 1730mAh 6.57Whr.

    What all would i need in order to step down from the 5vdc to around the 3.8vdc mark?

    The USB 5vdc is rated at 5.1vdc 2.1A.

    Any help would be great! :)
  2. CocaCola


    Apr 7, 2012
    Why not just plug the 5V into the phones charging port, almost all phones are 5V input now on the charging port?

    If you want a quick an dirty, use two diodes in series, or use a zener diode configured to fix the voltage, a quick Google search will reveal how...

    You could also use a low drop out regulator if you can find a suitable one...
Ask a Question
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.
Electronics Point Logo
Continue to site
Quote of the day