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Circuit for driving and monitoring an LED

  • US 20080231198A1
  • Filed: 03/23/2007
  • Published: 09/25/2008
  • Est. Priority Date: 03/23/2007
  • Status: Active Grant
First Claim
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1. A circuit for controlling a current through an LED, comprising:

  • a regulator for providing said current to said LED;

    an LED voltage monitoring circuit for monitoring a voltage drop across said LED and providing a voltage reading signal based on said voltage drop; and

    a data converter logic circuit coupled with said regulator and said LED voltage monitoring circuit, wherein said data converter logic circuit is operable to control said regulator to adjust said current based on said signal.

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