If you'd like to turn off the 3.3V regulator, you can do that with the '''EN'''(able) pin. Simply tie this pin to '''Ground''' and it will disable the 3V regulator. The '''BAT''' and '''USB''' pins will still be powered | If you'd like to turn off the 3.3V regulator, you can do that with the '''EN'''(able) pin. Simply tie this pin to '''Ground''' and it will disable the 3V regulator. The '''BAT''' and '''USB''' pins will still be powered |