I am trying to design a very simple circuit consisting of an accelerometer IC and a Bluetooth IC, all rated at 1.8 up to 4.something volts and thinking to use a single CR2032 cell. Seems like these usually come at 2.8 - 3V and about 250mAh current, depending on manufacturer and other factors.
I have already planned to add required capacitors around each IC, but I am wondering if I should still use a voltage regulator with this circuit?
So far the only good reason I could think of would be to prevent frying the ICs in situations where the user would manage to somehow cram up 2 batteries instead of one in the enclosure, aka making the circuit idiot-proof.