Patent ID: 8933682
Filing Date: 2015-01-13
Classification: G05F

Abstract:
1. A bandgap voltage reference circuit comprising: a first circuit generating a first voltage which changes according to a first characteristic; a second circuit generating a second voltage which changes according to a second characteristic different from the first characteristic; an amplifier receiving the first and second voltages, and changing and supplying an amount of an output current from a first power supply to an output terminal according to a difference voltage between the first and second voltages, wherein an output voltage at the output terminal is provided to the first and second circuits; and an output current controller providing a control signal to the amplifier to cause the amplifier to supply the output current from the first power supply to the output terminal regardless of the difference voltage when the output voltage equals or is smaller than a threshold voltage, wherein the output current controller connects with the output terminal and the amplifier.