Low dropout regulator

A low dropout regulator, comprising:

• an amplifier circuit, operating between a first power supply voltage and a second power supply voltage, comprising a differential input pair having a first stage input circuit and a second stage input circuit, configured to receive an input voltage and a reference voltage through the first stage input circuit and the second stage input circuit, and generate an output voltage according to the input voltage and the reference voltage;
• an equalizer circuit, coupled between two intermediate nodes where the first stage input circuit and the second stage input circuit are stacked, configured to short circuit as controlled by a control signal;
• a compensation capacitor, coupled to one of the two intermediate nodes;
• a discharge circuit, coupled between a common terminal of the differential input pair and the second power supply voltage, configured to pull down a common mode voltage of the common terminal as controlled by the control signal;
• and
• a detection circuit, coupled to the amplifier circuit, the equalizer circuit and the discharge circuit, configured to generate the control signal according to a node voltage of one of the two intermediate nodes.