Low dropout voltage regulator with high power supply...

Details Low dropout voltage regulator with high power supply... Low dropout voltage regulator with high power supply...

2011-08-09

2011-08-09

Sterrett, Jeffrey (Department: 2838)

Electricity: power supply or regulation systems

Output level responsive

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

C323S281000

Reexamination Certificate

active

07994764

ABSTRACT:
A low dropout voltage regulator includes an error amplifier, a voltage divider, and a voltage reference/amplifier circuit. The error amplifier has first and second input terminals, a power supply terminal for receiving an input voltage, and an output terminal for providing a regulated output voltage. The voltage divider provides a feedback voltage as a predetermined fraction of said regulated output voltage. The voltage reference/amplifier circuit provides a first voltage to said first input terminal of said error amplifier that varies inversely with variations of said feedback voltage, and provides a second voltage to said second input terminal of said error amplifier that varies by substantially the same amount over temperature as variations in said first voltage.

REFERENCES:
patent: 6424205 (2002-07-01), Kadanka et al.
patent: 6700360 (2004-03-01), Biagi et al.
patent: 6703815 (2004-03-01), Biagi
patent: 6703816 (2004-03-01), Biagi et al.
patent: 2010/0117609 (2010-05-01), Koleno

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