Semiconductor circuit having constant power supply circuit desig

Details Semiconductor circuit having constant power supply circuit desig Semiconductor circuit having constant power supply circuit desig

1996-02-07

1997-12-09

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

With specific source of supply or bias voltage

327538, 327543, G05F 110

Patent

active

056964650

ABSTRACT:
A semiconductor circuit has a constant power supply circuit designed to decrease power consumption. The circuit has a step-down circuit 1 for generating a control voltage, an output circuit 2 having an output transistor P3 connected to an output terminal Vint, and a switching circuit 4 for supplying the control signal to the gate of the output transistor P3 when a voltage of a power line Vcc is higher than a predetermined voltage, and for supplying the voltage of the power line Vcc to the gate of the output transistor P3 when the voltage of the power line Vcc is lower than the predetermined voltage.

REFERENCES:
patent: 5283762 (1994-02-01), Fujishima
patent: 5321653 (1994-06-01), Suh et al.
patent: 5347170 (1994-09-01), Hayakawa et al.
patent: 5349559 (1994-09-01), Park et al.
patent: 5396113 (1995-03-01), Park et al.

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