LOW POWER LOW-DROPOUT LINEAR VOLTAGE REGULATOR
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United States of America Patent
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Issued Date -
Jan 17, 2013
app pub date -
Jul 12, 2011
filing date -
Jul 12, 2011
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
An integrated circuit, including: a low dropout regulator configured to output regulated power to a device that can be in standard mode drawing power from the regulator or in idle mode during which it substantially does not draw power from the regulator; a capacitor in parallel to the regulator's output configured to be charged when the regulator is enabled and to provide power instead of the regulator when the regulator is disabled; a control configured to disable and enable the regulator; wherein the control is configured to disable the regulator when the device is in idle mode and enable the regulator when the device is in standard mode; and wherein during idle mode the control enables the regulator at various times to prevent the charge of the capacitor from decreasing more than a pre-selected amount.
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