Low current protection circuit
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United States of America Patent
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Apr 5, 2016
Grant Date -
Jan 29, 2015
app pub date -
Jul 28, 2014
filing date -
Jul 29, 2013
priority date (Note) -
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Abstract
A low current protection circuit is configured to detect a lowering of a load current flowing a load to perform a low current protection operation and includes: a load current detection configured to detect a load current; a low current detection configured to detect a lowering of the load current by comparing the load current detected by the load current detection unit and a preset reference value; a protection unit configured to perform the low current protection operation when the lowering of the load current is detected by the low current detection unit; and a masking unit configured to mask the low current protection operation of the protection unit from when the lowering of the load current is detected by the low current detection unit to when a masking time period depending on a duty ratio of the external pulse signal elapses.
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