Linear voltage regulator with selectable output voltage

Details Linear voltage regulator with selectable output voltage Linear voltage regulator with selectable output voltage

2007-06-05

2007-06-05

Vu, Bao Q. (Department: 2838)

Electricity: power supply or regulation systems

Output level responsive

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

C323S273000, C323S275000

Reexamination Certificate

active

11308692

ABSTRACT:
A linear voltage regulator provides a selectable output voltage to a load. The linear voltage regulator includes: a regulating circuit including an input terminal for receiving an input voltage, an output terminal for providing an output voltage to a load, and an adjusting terminal; a first resistor and a second resistor connected between the output terminal and ground for receiving the output voltage; and a voltage sampling control circuit electrically connected to a node between the first resistor and the second resistor for receiving logic signals from a controlling chip, and generating a reference current to the adjusting terminal of the regulating circuit to provide the selectable output voltage.

REFERENCES:
patent: 5231316 (1993-07-01), Thelen, Jr.
patent: 5467009 (1995-11-01), McGlinchey
patent: 5963439 (1999-10-01), Wuidart et al.
patent: 6020727 (2000-02-01), Bernard et al.
patent: 6583607 (2003-06-01), Marty et al.
patent: 6861901 (2005-03-01), Prexl et al.
patent: 7068019 (2006-06-01), Chiu

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