Power supply circuit and electronic equipment
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United States of America Patent
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May 15, 2012
Grant Date -
Dec 31, 2009
app pub date -
Jan 15, 2009
filing date -
Jan 24, 2008
priority date (Note) -
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status (Latency Note)
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Abstract
A power supply circuit comprising: a voltage generating circuit configured to generate an output voltage of a target level from an input voltage; an overcurrent protection circuit configured to control the voltage generating circuit so as to stop an output current, when a level of the output current generated at a time of generating the output voltage is greater than a reference level; and a reference-level change circuit configured to change the reference level in the overcurrent protection circuit to be at a second level higher than a first level from the first level for a predetermined period, when the overcurrent protection circuit detects that the level of the output current is greater than the reference level.
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