Power source generation circuit and integrated circuit
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United States of America Patent
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Mar 17, 2015
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N/A
app pub date -
Aug 23, 2013
filing date -
May 19, 2009
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Abstract
A power source generation circuit includes a regulator circuit which receives an external power source voltage VDDA from an external power source, and generates a predetermined internal power source voltage on a given terminal VDD; and a charging circuit which connects the external power source and the given terminal when the external power source voltage VDDA supplied from the external power source is equal to or lower than a predetermined threshold voltage.
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