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Ultra-low power limiter

  • US 20060198197A1
  • Filed: 02/24/2006
  • Published: 09/07/2006
  • Est. Priority Date: 02/24/2005
  • Status: Active Grant
First Claim
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1. An over-voltage protection circuit, comprising:

  • a first switching block having a plurality of semiconductor elements serially connected to each other and turned on in sequence according to the magnitude of an input voltage; and

    a plurality of second switching blocks, in which each of the second switching blocks includes a pair of serially connected semiconductor elements having different current properties, and is connected in parallel to the first switching block.

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