Circuit device, switching regulator, and electronic

A circuit device comprising:

• a first switching circuit that enters a conduction state or a non-conduction state according to a drive signal, one end of the first switching circuit being connected to an output node, one end of a first switching element and one end of a second switching element, another end of the first switching element being connected a first power supply node, another end of the second switching element being connected a second power supply node having a lower potential than the first power supply node, the drive signal driving the second switching element,
• a second switching circuit that is connected between another end of the first switching circuit and a node having a predetermined potential, and enters a non-conduction state or a conduction state complementarily with the first switching circuit;
• an impedance element connected in series with the second switching circuit between the other end of the first switching circuit and the node having the predetermined potential;
• a comparator circuit that has an input terminal to which a potential of the other end of the first switching circuit is applied, and outputs an output signal indicating whether or not a potential of the input terminal is higher than a determination level;
• and
• a control circuit that, when the output signal indicating that the potential of the input terminal is higher than the determination level is output from the comparator circuit in a state in which the second switching element is in a conduction state, controls a level of the drive signal such that the second switching element enters a non-conduction state.