Power suply for MicroSD card breakout board I'm developing a project and I need to connect to my Arduino Mini with a SD card breakout board. The problem is that I can't plug it directly to the Arduino since it is already powering some sensors and a BITalino, and I was told that it would, for some reason, be better to connect an external battery to the SD board.

My question is if i can supply this  MICROSD CARD BREAKOUT BOARD+ with a 3.7V battery, instead of a 5V.

Thank you!

Description:


Onboard 5V->3V regulator provides 150mA for power-hungry cards
3V level shifting means you can use this with ease on either 3V or 5V systems
Yes you can give power supply to MICROSD CARD BREAKOUT BOARD from a 3.7V battery It has Onboard LP98x Voltage regulator winch provide 3.3V regulated power supply.

Take reference from here Schematic of MICROSD CARD BREAKOUT BOARD