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Power detecting circuit with fast power removing detection, electronic device and method thereof

  • US 20130033116A1
  • Filed: 08/03/2011
  • Published: 02/07/2013
  • Est. Priority Date: 08/03/2011
  • Status: Abandoned Application
First Claim
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1. A power detecting circuit with fast power removing detection, comprising:

  • an isolating device, coupled between an external power source and an internal power source, for isolating the external power source and the internal power source; and

    a comparator, coupled to the external power source, for determining if the external power source is removed, and accordingly generating a removing signal;

    wherein the internal power source is provided to an internal circuit;

    wherein the comparator is coupled to the internal circuit;

    wherein the internal circuit prepares to turn off and turns off according to the removing signal.

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