I’ve been working on project for a while now where I am creating a custom PCB Tracker. The board runs on 3.3v and I’m using the MKL26Z64 Microcontroller (Found in the Teensy LC). I would like to be able to power my board from a single LiPo battery, so I wanted to include the circuitry for that. My circuit needs at least 900 mAh because of the transmitter module, which is too much for the microcontroller’s in built 3.3v regulator to supply. I came up with a 3.3v regulator circuit, but I haven’t been able to find any good information on good charging/safety chips to use, and how I would also interface this with the micro USB port.
My schematic is below.
NoahSchematic_APRS_tracker_Teensy_2021-05-01_20-37-15.pdf (103.9 KB)