Patent ID: 8493130

Claim:
A reference voltage generating circuit comprising: a bandgap reference circuit that outputs a bandgap reference voltage; a voltage dividing circuit that generates a first voltage and a second voltage obtained by dividing the bandgap reference voltage; a regulator that amplifies the bandgap reference voltage, the regulator including a differential amplifier, a first resistor and a second resistor that are coupled in series between the output of the differential amplifier and the ground, wherein a first input terminal of the differential amplifier receives the bandgap reference voltage, a second input terminal is coupled to a coupled node between the first resister and the second resistor, and the bandgap reference circuit further outputs a third voltage that varies in accordance with a temperature determined by a predetermined amount of current flowing in the bandgap reference circuit and a predetermined resistor in the bandgap reference circuit; and a correcting circuit that controls a correcting current flowing through the coupled node so that the magnitude of the correcting current varies in accordance with the difference between the third voltage and the first voltage, and the difference between the third voltage and the second voltage.