This is an extremely tiny low voltage to 5VDC converter module.
If you need a bit of a power boost, but don't have much space (or need much power), here's just the thing: The LV to 5VDC Boost converter. Preconfigured to take 1.8 to 5VDC and give you a regulated 5VDC output, up to a maximum of 500mA.
It's about the size of a microSD card, with three contact points: Input, Ground, and 5VDC output.
Please note: Input voltage cannot exceed 5VDC. It's a boost converter, and is only designed to push voltage up.
Input Voltage Range: 0.8 - 5VDC
Output Voltage: 5VDC
Working Frequency: 180KHz
Ambient Operating Temp: -25 to +85 °C
Pin Pitch: 2.54mm
Dimensions: 11mm x 10.5mm x 7.5mm