I have a project I am working on, its a shield that plugs into a DUE and is intended to be a LoRa handheld receiver, likely powered by a Lithium battery. I could build in a discrete push button on\off circuit that uses a couple of MOSFETs, with some resistors and capacitors to disconnect the batter…

Lithium Battery Power On\Off Circuit

jremington October 7, 2016, 5:16pm 4

Not a patented IC;

Those aren't, but Pololu's patented IC power switch can be found here.

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