Current limiting protection circuit
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United States of America Patent
Stats
-
Jul 28, 2009
Grant Date -
Jul 10, 2008
app pub date -
Jan 10, 2007
filing date -
Jan 10, 2007
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A power supply management device including a current limiting protection circuit. The power supply management device may include an output terminal, a first transistor, a replication circuit, a comparator circuit, and a control circuit. The first transistor may provide an output current to the output terminal of the power supply management device. The replication circuit may be connected to the first transistor and may replicate the output current to a separate path to monitor the output current. The comparator circuit may be connected to the replication circuit and may compare the replicated output current to a current reference. The control circuit may be connected to the first transistor and to the comparator circuit. In response to the replicated output current being greater than the current reference, the control circuit may limit the output current the first transistor provides to the output terminal to an amount corresponding to the current reference.
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