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Load control device and method

  • US 20070230224A1
  • Filed: 03/09/2007
  • Published: 10/04/2007
  • Est. Priority Date: 04/04/2006
  • Status: Active Grant
First Claim
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1. A load control device comprising:

  • a control circuit that controls driving of a load; and

    a protection circuit that monitors a power supply voltage supplied to the control circuit and stops control by the control circuit when the power supply voltage drops below a threshold value,wherein the protection circuit has a means to provide the threshold value with a hysteresis characteristic having a width equal to or larger than a voltage drop level based on a wiring resistance of a path for supplying a driving current to the load and a maximum value of the driving current.

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