A display apparatus includes a display panel; a gate driver configured to drive gate lines of the display panel, the gate driver including gate stages that are connected to a power line that supplies an output voltage to the gate stages; a comparator circuit coupled with the gate driver through a feedback line, the comparator circuit configured to compare a first divided voltage of a first node of the comparator circuit that is based on a feedback current in the feedback line and a second divided voltage of a second node of the comparator circuit that based on a reference voltage, and supply the output voltage to a third node of the comparator circuit that is connected to the power line, the output voltage based on the comparison between the first divided voltage and the second divided voltage.