Stabilized low dropout voltage regulator circuit

Details Stabilized low dropout voltage regulator circuit Stabilized low dropout voltage regulator circuit

1988-10-06

1990-05-22

Salce, Patrick R.

Electricity: power supply or regulation systems

Self-regulating

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

323316, 3072961, 3072966, 3072968, G05F 324

Patent

active

049280562

ABSTRACT:
A voltage regulator circuit is set forth in which the series pass transistor has its high impedance (collector/drain) electrode connected to the output terminal and a shunt transistor has its low impedance (emitter/source) electrode connected to the output terminal. The circuit is arranged to ensure that the shunt transistor is always conductive so that its low impedance electrode will stabilize the operation of the circuit without requiring any external components. The circuit can be fabricated in either bipolar or CMOS form and a low dropout configuration is employed.

REFERENCES:
patent: 4075546 (1978-02-01), Barber
patent: 4743833 (1988-05-01), Johnson
"New Developments in IC Voltage Regultors", R. Widlar, IEEE Journal of Solid State Circuits, vol. SC6, No. 1, Feb. 1971, pp. 2-7.

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