Constant current source for interior LED lighting

Highly efficient and compact, LEDs have become the de-facto choice for interior lighting applications, from cluster backlighting to mood lighting. However, LEDs are sensitive to operating current so, for any single or string system, a constant steady state current is vital. That’s why constant current source devices make the ideal solution for driving LEDs in the electrically noisy environment of vehicles. Our space-saving NCR series complements the efficiency of LEDs perfectly with accurate and stable outputs.

Block diagram

Design considerations

  • Individually dimmable LED control
  • Accurate LED current control
  • Compact package (SOT23 / SOT457)
  • High efficiency driver design
  • Low EMI solution using small scale highly integrated package technology
  • Maximum drain current: 10 to 50 mA

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