Can it get ruined?
It depends on the regulator. 1117's for example don't like that much. What you should do is to put a diode from the regulator's output pin to its input pin. Any diode will do.
Can it get ruined?
It depends on the regulator. 1117's for example don't like that much. What you should do is to put a diode from the regulator's output pin to its input pin. Any diode will do.