Miller compensation circuit and electronic circuit

A Miller compensation circuit, comprising:

• a differential amplifier, an output transistor, a Miller capacitor, a follower and a current sampling circuit;
• wherein:
• the differential amplifier comprises:
• an inverting input terminal, a non-inverting input terminal and an output terminal, wherein the inverting input terminal of the differential amplifier is connected to an input signal of the Miller compensation circuit, the non-inverting input terminal of the differential amplifier is connected to an output terminal of the output transistor, and the output terminal of the differential amplifier is connected to the output transistor and the Miller capacitor;
• the output transistor comprises a first terminal, a second terminal and a third terminal;
• wherein the first terminal is connected to a first power supply;
• the second terminal is connected to the output terminal of the differential amplifier;
• the third terminal is a voltage output terminal, connected to the non-inverting input terminal of the differential amplifier and to one terminal of a load;
• another terminal of the load is connected to a second power supply;
• one terminal of the Miller capacitor is connected to the output terminal of the differential amplifier, and another terminal of the Miller capacitor is connected to an output terminal of the current sampling circuit and an output terminal of the follower;
• an input terminal of the follower is connected to the third terminal of the output transistor, and the output terminal of the follower is connected to the Miller capacitor and an output terminal of the current sampling circuit;
• the current sampling circuit is configured to sample a first current of the output transistor to obtain a second current, and the second current is outputted from the output terminal of the current sampling circuit, wherein the second current and the first current satisfy a preset proportional relation.