System and method of trickle charging a battery in a narrow rail architecture
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United States of America Patent
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Feb 1, 2011
Grant Date -
Apr 17, 2008
app pub date -
Apr 5, 2007
filing date -
Oct 12, 2006
priority date (Note) -
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Abstract
The charging circuit for charging a battery of an electronic device using a connected AC power adaptor includes circuitry responsive to an applied regulated voltage for charging the battery connected to the charging circuitry. The circuitry prevents the regulated voltage applied to the circuitry from falling below a settable voltage level. Additionally, the circuitry switches a charging current between a quick charge level and a trickle charge level responsive to a state of a transistor.
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