MOS current limiting output circuit

Details MOS current limiting output circuit MOS current limiting output circuit

1985-09-13

1986-09-16

Wong, Peter S.

Electricity: power supply or regulation systems

Self-regulating

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

323908, 307568, 361 58, H03K 508

Patent

active

046124977

ABSTRACT:
An MOS current limit circuit which provides current limiting protection is provided. A driver transistor of a conventional output stage is coupled to a current limiting transistor which is one transistor of a current mirror. The current limiting transistor of the current mirror has the V.sub.GS thereof accurately biased to insure a precise current limit value. When the current limiting transistor is not performing a current limiting function, the current limiting transistor is made conductive and further provides high voltage protection to the driver transistor when the driver transistor is nonconductive.

REFERENCES:
patent: 3275911 (1966-09-01), Onodera
patent: 3369129 (1968-02-01), Wolterman
patent: 3521087 (1970-07-01), Lombardi
patent: 4004164 (1977-01-01), Cranford, Jr. et al.
patent: 4078200 (1978-03-01), Ritchie et al.
patent: 4399374 (1983-08-01), Boeke

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