Voltage regulator operable to switch between a two-stage structure operation and a three-stage structure operation
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United States of America Patent
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May 7, 2013
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N/A
app pub date -
Sep 23, 2010
filing date -
Sep 29, 2009
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Abstract
Provided is a voltage regulator having a structure in which an output terminal of a first differential amplifier circuit is connected to a second differential amplifier circuit to control an output transistor by the second differential amplifier circuit. When low current consumption is required, the first differential amplifier circuit is suspended. When high-speed response is required, the first differential amplifier circuit is activated. The low-current consumption operation and the high-speed operation are switched with a minimum circuit area.
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