I’m working on a project using two small li-ion coin cells (Varta CoinPower series). An IC to provide undervoltage lockout is recommended by Varta. There are plenty of options out there, for example the AP9211, AP9234 and AP9101, but these are obsolete. There are also many ICs designed for higher-power applications, e.g BQ2970x, but these all use a pair of external FETs. My projects is very compact (hence the use of these CoinPower cells) and therefore I am trying to reduce parts count, especially because I am using two cells and would therefore have to duplicate the protection circuit.
Does DigiKey stock an IC that will provide undervoltage protection, ideally in a single-IC package? Something that I can hand solder is preferred, e.g SC-70, SOT-23.
Note that charging the cells will be handled by an external charger that is not space-constrained, so I do not need any “charging” type functions in the cell protection IC.
Thank you.