Power off control circuit and electronic device using same
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United States of America Patent
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Dec 5, 2017
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N/A
app pub date -
Aug 19, 2015
filing date -
Aug 19, 2015
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Abstract
A power-off control circuit applied in an electronic device includes a switch, a first control unit, a first buffer unit, a second control unit, and a second buffer unit. A first control unit coupled to the second terminal of the switch. The first control unit receives a first logic signal when the switch is pressed, and outputs a first control signal. A first buffer unit is coupled to an output of the first control unit to receive the first control signal, and outputs a second control signal. A second buffer unit is coupled to the second terminal of the switch to receive the first logic signal, and outputs a third control signal. A second control unit is coupled to an output of the second buffer unit to receive the third control signal, and outputs a power-off control signal to make the electronic device to power-off.
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