Copied from the chinese version of EasyEDA:
Input voltage: 2.7-13V
Up to 16V output voltage
Supports 30W Average PowerLoad and 40W Peak PowerLoad from 3.3V
600kHz Fixed Switching Frequency
The [MCP16251](MCP16251) is a compact, high-efficiency, fixed frequency, synchronous step-up DC-DC converter. This family of devices provides an easy-to-use power supply solution for applications powered by either one-cell, two-cell or three-cell alkaline, NiCd, NiMH and one-cell Li-Ion or Li-P...
AAA-Battery to 3.3V,5.0V r00
using TI.com TLV61220
Low-Input Voltage Step-Up Converter SOT23-6
AAA Battery holder made from AAA Battery clips and PCB.
AAA-Battery on "Back/Bottom" of PCB.
J100, J200 for access, install not required.