One of my projects require a 3.3V supply.
Its an audio codec, TIs AIC3254, to be interfaced with Arduino Uno.
The codec requires almost 300mA of current, so was thinking of using a level shifter connected to the 5V output of the Arduino board, which can supply 400mA, instead of using an external supply with LDO.
Can the Arduino 5V output be used efficiently with level shifter? Or external supply is the best option?
Ignore the USB part