Adafruit MiniBoost 5V @ 100mA Charge Pump - AP3602A

Key Features A mini-booster the size of a linear regulator Perfect for use with battery-powered projects with 2 or 3 Alkaline, or a single Lithium battery Uses a charge-pump topology, doubling the incoming voltage, and then regulate down Very compact and low cost This adorable little board will come in very handy whenever you need a small amount of 5V power. It's the size of a linear regulator, but it's actually a mini-booster! Input 3V on one side, and get 5V at up to 100mA supply on the other. Perfect for use with battery-powered projects with 2 or 3 Alkaline, or a single Lithium battery.This booster uses a charge-pump topology, which makes it very compact and low cost. But it isn't as efficient as a inductor-based boost converter. Charge-pumps always double the incoming voltage, and then regulate down. So yeah, not as efficient. So ideal for when you aren't counting coulombs - or when your current draw isn't terribly high.Item SpecificsDimensions: 15.0mm x 10.0mm x 3.0mm / 0.6" x 0.