I would like to run at 3.3V for longest battery life in a portable Camera Controller based on Seeeduino 2.2
External power goes through 2 regulators: 5.0 and 3.3 to the 328 chip.
Could I route external battery power directly to the 3.3V regulator for lowest drop-out voltage?? What precautions should I take?
What is the drop-out differential voltage for the 3.3V regulator?? Would be NICE to run on a 3.7V LiPo cell like a cellphone battery!
Any comments / suggestions appreciated…