Voltage reference circuit with fast enable and disable capabilities
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United States of America Patent
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Dec 1, 2009
Grant Date -
May 22, 2008
app pub date -
Nov 21, 2006
filing date -
Nov 21, 2006
priority date (Note) -
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Abstract
An integrated circuit for providing an output voltage substantially equal to a reference voltage includes: a low drop-out (LDO) regulator coupled to the reference voltage for producing the output voltage at an output terminal; a fast turn-on circuit coupled to the LDO regulator for quickly supplying an output current at the output terminal according to a first control signal; and a fast turn-off circuit coupled to the LDO regulator for quickly drawing a discharge current from the output terminal according to a second control signal.
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