A low-dropout regulator includes a comparator for comparing a feedback voltage with a reference voltage to output a comparison signal, which corresponds to a comparison result, to a control node; an internal voltage generator coupled to the control node, and for generating the feedback voltage and an internal voltage based on the comparison signal; and a controller coupled to the control node, and for monitoring the internal voltage based on the comparison signal, and controlling a voltage level of the comparison signal according to a monitoring result.