Output voltage of boost converter is adjustable and can be set from 2.0v to 5.5v, as per datasheet: http://ww1.microchip.com/downloads/en/DeviceDoc/22234B.pdf
Minimum operating voltage is 0.35v, and minimum start-up voltage is 0.65v.
The MCP1640 part can be found on DigiKey here: http://www.digikey.com/product-detail/en/microchip-technology/MCP1640T-I-CHY/MCP1640T-I-CHYCT-ND/2258621
This board is designed to plug easily into a 2.54mm pitch breadboard. Use 2.54mm pitch header pins.
I've tested an assembled PCB, and it works.
Please order your PCBs for this project using the following link: https://PCBs.io/share/zyLW7. It is a more convenient way of ordering, and I will receive a 10% credit on future PCB orders, which contributes toward new development and improvements. This does not cost you anything extra, and the pcbs.io prices are lower than OSH PARK's.
|Qty||Value||Device||Package||Parts||Description||MF||MPN||Aliexpress or Ebay link|
|1||MCP1640||Boost converter chip|
|These values will produce a Vout of 3.3 volts.|
|See top schematic on page 2 of datasheet.|
|MCP1640 Breakout Board v003 Schematic.pdf||5.01 kB||15|