Low-dropout regulator

A low-dropout regulator, comprising:

• a first comparator configured to generate a first comparison signal according to a first reference signal and an output signal;
• an edge trigger coupled to the first comparator and configured to output a trigger signal according to the first comparison signal, a second comparison signal, and a third comparison signal;
• a second comparator coupled to the edge trigger and configured to generate the second comparison signal according to the output signal and a second reference signal;
• a third comparator coupled to the edge trigger and configured to generate the third comparison signal according to the output signal and a third reference signal;
• and
• an output stage circuit coupled to the edge trigger, the second comparator, and the third comparator and configured to output the output signal according to the first comparison signal, the second comparison signal, and the third comparison signal, wherein the output stage circuit comprises a plurality of hysteresis controllers and a plurality of power transistors, and each of the hysteresis controllers is configured to control a conduction state of a corresponding power transistor.