Step-down circuit with stabilized internal power-supply

Details Step-down circuit with stabilized internal power-supply Step-down circuit with stabilized internal power-supply

1994-03-16

1996-04-09

Callahan, Timothy P.

Electricity: power supply or regulation systems

Self-regulating

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

327541, G05F 324

Patent

active

055064957

ABSTRACT:
A step-down circuit with a stabilized internal power supply in which the gate potential VG1 of an output transistor is controlled by the differential amplifying circuit so that the current flowing through the output transistor is increased/decreased when the internal power-supply potential is lowered/raised. The gate potential of the transistor which is varied as the variable current source of the differential amplifying circuit is controlled by the differential amplifying circuit so that the current flowing through the transistor is increased/decreased when the internal power-supply potential is lowered/raised in order to maintain a stabilized internal power supply.

REFERENCES:
patent: 4520282 (1985-05-01), Watanabe et al.
patent: 4843257 (1989-06-01), Ohsawa
patent: 5077518 (1991-12-01), Han
patent: 5175451 (1992-12-01), Ihara

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