Patent ID: 7388355

Claim:
A voltage regulator comprising: a first voltage generating circuit for generating a first output voltage; a second voltage generating circuit for generating a second output voltage; a switch circuit for outputting either the first output voltage or the second output voltage to an output node; and a delay circuit for generating a delayed signal, by delaying a control signal designating the first output voltage or the second output voltage; said first voltage generating circuit being responsive to the control signal, for generating a bias voltage for controlling the operation, and generating the first output voltage corresponding to a reference voltage, based on the reference voltage and the bias voltage, when the first output voltage is designated by the control signal; said delay circuit having its delay operation controlled by the bias voltage; and said switch circuit outputting the first output voltage generated by the first voltage generating circuit to the output node, when the first output voltage is designated by the control signal, and the first output voltage is designated by the delayed signal, and outputting the second output voltage generated by the second voltage generating circuit to the output node, at other times.