Home › Evil Mad Scientist Forums › Electronics › How to do to prevent a 556 timer IC from becoming too hot? › Re: How to do to prevent a 556 timer IC from becoming too hot?
Running on 12 V is pushing the limits of the device quite a bit more than it would to run it at a lower voltage. 125 mA at 12 V gives P = I * V = 1.5 W of power, and since there aren’t any direct routes around the device from +12 to ground, that is all being dissipated inside the device. That’s well over the maximum power dissipation of the device — typically 0.8 W.