A DIY USB Charger with LM1117MP Voltage Regulator

USB charging requires only a constant voltage of +5V DC, with constant current. The LM1117MP-5,0 linear voltage regulator is very popular due to its simplicity of circuit wiring. It outputs a +5V voltage, and 1A current. It has low drop down voltage.

A finished circuit soldering

It's constructed with about a dozen of components I have. The LM1117MP-5,0 is an SMD device, but soldering it on PCB is not difficult.

Circuit diagram

PCB Drawing

I used Proteus 8 to draw the schematic and PCB. 

Bottom copper pattern with non-mirror

Top silk mirror

Top copper mirror

Three-D view of this PCB design

Click here to download source file.