Voltage regulators

Details Voltage regulators Voltage regulators

2011-07-05

2011-07-05

Berhane, Adolf (Department: 2838)

Electricity: power supply or regulation systems

Output level responsive

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

C323S274000

Reexamination Certificate

active

07973521

ABSTRACT:
Voltage regulators are provided. In one embodiment of the voltage regulators, a differential amplifier receives a reference voltage and a feedback voltage, to generate a control signal according to a voltage difference between the feedback voltage and the reference voltage. An output transistor has a first terminal coupled to a power voltage, a control terminal coupled to the differential amplifier for receiving the control signal, and a second terminal coupled to an output terminal. A voltage feedback circuit is coupled between the output terminal and a ground voltage to generate the feedback voltage. A discharge transistor has a first terminal coupled to the ground voltage, a control terminal coupled to a first control signal, and a second terminal coupled to the output terminal through a first resistor in the voltage feedback circuit.

REFERENCES:
patent: 6414537 (2002-07-01), Smith
patent: 7397227 (2008-07-01), Ke et al.
patent: 7554309 (2009-06-01), Carpenter et al.
patent: 7652455 (2010-01-01), Demolli
patent: 1609743 (2005-04-01), None
English language translation of abstract of CN 1609743 (published Apr. 27, 2005).

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