What would happen if a battery were connected in reverse to the nPM1100? Would it cause damage to the IC, trigger any protection mechanisms, or result in abnormal behavior?
What would happen if a battery were connected in reverse to the nPM1100? Would it cause damage to the IC, trigger any protection mechanisms, or result in abnormal behavior?
There is reverse current protection but unfortunately, there is no reverse polarity protection in the nPM yet. But probably you can have some external protection added yourself outside the module. You could use FET on either side of the battery. However note that the FET VGS threshold should be very low for this use if you have only 1.5V battery. Quick search online something like AM2336N NMOS could work, but better to simulate to be sure.
Thank you for your response. Could you clarify what would happen if the battery is connected in reverse?
It is an undefined behavior as it depends a lot on the battery and chip specific drain characteristics which cannot be generalized. But we have noticed internally that sometimes the battery become overheated. Haven't noticed any chip damage so far, but that does not mean it won't.
Good to know, thank you!
Good to know, thank you!