Battery Charger: LTC4010
- for best reliability, input voltage should be (2V*n_cells)+0.3V = ~21V
Undervoltage Protection: LT6703-2
- 1.4-18V voltage comparator with built in reference
- V- pin exposed, will output a logic 1 if input < reference
- low current draw, ~6.5uA
- open collector output, will likely need FET driver
Boost Converter: need something from TPS55330
- 12V to
...
- 21V boost converter
- 1.5A output current
Load Switch:
- 2A
OR Gate:
System Block Diagram:
