This is a breakout board for the Skyworks AAT1275-3.3 chip, which is an inexpensive ($0.49 on Digikey) 3.3V boost converter that can boost a voltage as low as 0.5v up to 3.3v. The breakout board is designed to plug easily into a 2.54mm pitch breadboard.
Here is the datasheet: http://www.skyworksinc.com/uploads/documents/AAT1217_202050B.pdf
Here is the part on DigiKey: https://www.digikey.com/product-detail/en/skyworks-solutions-inc/AAT1217ICA-3.3-T1/863-1496-1-ND/4246188
Please order your PCBs for this project using the following link: https://PCBs.io/share/zk57x . It is a more convenient way of ordering, and I will also 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||AAT1275-3.3||3.3v boost converter chip|
|1||4.7uH||low DCR SMD inductor|
|AAT1275 Breakout Board Schematic v003.pdf||4.6 kB||31|