Voltage regulator and semiconductor device

A voltage regulator, comprising:

• a differential amplifier circuit that outputs to a gate of an output transistor a voltage amplified from a difference between a reference voltage and a divided voltage obtained by dividing a voltage output by the output transistor;
• an inverting amplifier connected between the differential amplifier circuit and the output transistor;
• and
• a phase compensation circuit,
• wherein the phase compensation circuit comprises:
• a first transistor having a drain connected to an output port of the inverting amplifier, and having a drain-source current with a negative temperature characteristic due to temperature characteristics of carrier mobility;
• a second transistor having a drain connected to a gate of the first transistor, having a gate connected to the gate of the first transistor via a resistor, and having a drain-source current with a negative temperature characteristic due to the temperature characteristics of carrier mobility;
• and
• a current mirror circuit that comprises a voltage detection transistor for detecting a voltage input to the gate of the output transistor, and that supplies a current with a positive temperature characteristic to the drain of the first transistor and the drain of the second transistor in response to a current flowing in the voltage detection transistor.