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5vdc to 3.8vdc step down

StealthRT

Sep 4, 2010
138
Joined
Sep 4, 2010
Messages
138
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! :)
 

CocaCola

Apr 7, 2012
3,635
Joined
Apr 7, 2012
Messages
3,635
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...
 
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