Linear voltage regulator with improved responses to source...

Details Linear voltage regulator with improved responses to source... Linear voltage regulator with improved responses to source...

2005-09-08

2008-11-11

Sherry, Michael J (Department: 2836)

Electricity: electrical systems and devices

Safety and protection of systems and devices

Voltage regulator protective circuits

C361S111000, C361S056000

Reexamination Certificate

active

07450354

ABSTRACT:
A linear voltage regulator has a regulating transistor with a first channel electrode receiving an input voltage source and a second electrode providing an output voltage. A control electrode of the regulating transistor is controlled by an error amplifying circuit based on comparison between a feedback signal of the output voltage and a reference voltage. An event detecting circuit is coupled to the input voltage source for detecting occurrence of a transient in the input voltage source. In response to the detected transient event, an enable controlling circuit generates an enable signal for determining an effective operation time of a voltage clamping circuit. During such effective operation time, a potential difference between the first channel electrode and the control electrode is limited within a predetermined clamp voltage for preventing the regulating transistor from being dramatically changed in operation.

REFERENCES:
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