Voltage regulator

Details Voltage regulator Voltage regulator

2005-12-27

2005-12-27

Laxton, Gary L (Department: 2838)

Electricity: power supply or regulation systems

Output level responsive

Using a three or more terminal semiconductive device as the...

C327S541000

Reexamination Certificate

active

06979983

ABSTRACT:
A voltage regulator, regulating a supply voltage and outputting a regulated voltage. The voltage regulator comprises a two stage OP which outputs a first voltage and a second voltage according to a reference voltage and a feedback voltage. A NMOS transistor controlled by a voltage detection unit, to receive the second voltage when the detected supply voltage is in a high mode. A PMOS transistor controlled by the voltage detection unit, to receive the first voltage when the detected supply voltage is in a low mode. A feedback circuit for receiving the regulated voltage and outputting the feedback voltage to the two stage OP.

REFERENCES:
patent: 5973484 (1999-10-01), Cho
patent: 6727680 (2004-04-01), Hoffman

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