SEMICONDUCTOR DEVICE AND BATTERY PACK

A semiconductor device with reduced power consumption is provided. The semiconductor device includes a node ND, a node ND, a resistor, a capacitor, and a comparison circuit. The resistor is electrically connected in series between one of a positive electrode and a negative electrode of a secondary battery and a first terminal. The resistor has a function of converting current flowing between the one of the positive electrode and the negative electrode of the secondary battery and the first terminal into a first voltage. The first voltage is added to a voltage of the node ND through the capacitor. The comparison circuit has a function of comparing a voltage of the node ND and the voltage of the node ND. The comparison circuit outputs a signal that notifies detection of overcurrent when the voltage of the node ND is higher than the voltage of the node ND