Low dropout voltage regulator

Details Low dropout voltage regulator Low dropout voltage regulator

2006-04-18

2006-04-18

Berhane, Adolf (Department: 2838)

Electricity: power supply or regulation systems

Self-regulating

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

Reexamination Certificate

active

07030598

ABSTRACT:
A low dropout voltage regulator. The regulator comprises a bandgap reference circuit and first and second transistors coupled in parallel. The parallel transistors form the input of an operational amplifier, coupled to and providing substantially no load to the bandgap reference circuit. The bandgap reference circuit is coupled to the output of the integrated circuit low dropout voltage regulator. As a beneficial result, the bandgap reference works from a regulated output and has substantially no load. Consequently, the voltage output of the present invention is highly stable.

REFERENCES:
patent: 5410241 (1995-04-01), Cecil
patent: 5781002 (1998-07-01), O'Neill
patent: 6150872 (2000-11-01), McNeill et al.
Ferranti Interdesign, Inc., “301 Analog IC Designs; Functional Blocks for Macrochip Semicustom Integrated Circuits,” 1987, p. 48.
Grey and Meyer, “Analog Integrated Circuits,” 1977, pp. 258-261.

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