Apparatus and method for input voltage transient protection with a low-voltage reset circuit
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United States of America Patent
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Feb 9, 2010
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N/A
app pub date -
Aug 27, 2007
filing date -
Aug 27, 2007
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Abstract
A circuit for voltage transient protection is provided. The circuit includes a voltage divider, a low-voltage reset circuit, and an input transistor. The input transistor receives an input voltage at the source of the input transistor, and provides a protected input voltage at the drain of the input transistor. The voltage divider provides a threshold voltage from the input voltage. The low-voltage reset circuit receives the threshold voltage. The low-voltage reset circuit causes the gate and source of the input transistor to short together when the low-voltage reset circuit is not in a reset state.
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