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Title: Voltage regulator

Abstract

This patent describes a prior art integrated circuit voltage regulator having an unregulated voltage input terminal and a regulated voltage output terminal, and further comprising: a first transistor having an emitter, a collector and a base, the first transistor having a first base-emitter voltage characteristic, the collector of the first transistor being connected through a first resistor to a current source. The current source is derived from the unregulated voltage, the emitter of the first transistor being connected through a second resistor to a reference voltage; and a second transistor having an emitter, a collector and a base, the second transistor having a second base-emitter voltage characteristic, the base of the second transistor being connected to the collector of the first transistor. The collector of the second transistor is connected to the current source, the emitter of the second transistor being connected to the reference voltage. The regulated output of the voltage regulator is provided at the collector of the second transistor and the regulated voltage output is a function of the first base-emitter voltage characteristic of the first transistor plus the quantity comprising the difference between the first base-emitter voltage characteristic of the first transistor and the second base-emittermore » voltage characteristic of the second transistor, times the ratio of the value of resistance of the first resistor and the value of resistance of the second resistor. The improvement described here comprises: a third transistor having a collector, an emitter and a base.« less

Inventors:
Publication Date:
OSTI Identifier:
6864112
Patent Number(s):
US 4628247
Assignee:
SGS Semiconductor Corp., Phoenix, AZ
Resource Type:
Patent
Resource Relation:
Patent File Date: Filed date 5 Aug 1985
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; VOLTAGE REGULATORS; DESIGN; OPERATION; ELECTRIC CURRENTS; ELECTRIC POTENTIAL; INTEGRATED CIRCUITS; RESISTORS; TRANSISTORS; CURRENTS; ELECTRICAL EQUIPMENT; ELECTRONIC CIRCUITS; EQUIPMENT; MICROELECTRONIC CIRCUITS; SEMICONDUCTOR DEVICES; 420800* - Engineering- Electronic Circuits & Devices- (-1989)

Citation Formats

Rossetti, N. Voltage regulator. United States: N. p., 1986. Web.
Rossetti, N. Voltage regulator. United States.
Rossetti, N. Tue . "Voltage regulator". United States.
@article{osti_6864112,
title = {Voltage regulator},
author = {Rossetti, N},
abstractNote = {This patent describes a prior art integrated circuit voltage regulator having an unregulated voltage input terminal and a regulated voltage output terminal, and further comprising: a first transistor having an emitter, a collector and a base, the first transistor having a first base-emitter voltage characteristic, the collector of the first transistor being connected through a first resistor to a current source. The current source is derived from the unregulated voltage, the emitter of the first transistor being connected through a second resistor to a reference voltage; and a second transistor having an emitter, a collector and a base, the second transistor having a second base-emitter voltage characteristic, the base of the second transistor being connected to the collector of the first transistor. The collector of the second transistor is connected to the current source, the emitter of the second transistor being connected to the reference voltage. The regulated output of the voltage regulator is provided at the collector of the second transistor and the regulated voltage output is a function of the first base-emitter voltage characteristic of the first transistor plus the quantity comprising the difference between the first base-emitter voltage characteristic of the first transistor and the second base-emitter voltage characteristic of the second transistor, times the ratio of the value of resistance of the first resistor and the value of resistance of the second resistor. The improvement described here comprises: a third transistor having a collector, an emitter and a base.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1986},
month = {12}
}