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onsemi NCL35076 Wide Analog Dimming CCM Buck Controllers

onsemi NCL35076 Wide Analog Dimming CCM Buck Controllers are ideal for a wide dimming range down to 1% by analog dimming control. This relieves audible noise and flickers in PWM dimming. onsemi’s proprietary LED current calculation technique driven by zero input offset amplifiers performs precise constant current in the whole analog dimming range. The multi-mode operation provides low LED current ripple with a small output capacitor by CCM at heavy load and deep analog dimming by DCM at light load.

Features

  • 1~100% wide analog dimming range
  • ±2% at 100% load & ±20% at 1% load low CC tolerance
  • Low system BOM
  • LED off mode at standby
  • Low standby current
  • PWM dimming available
  • Gate sourcing and sinking current of 0.5A/0.8A
  • Robust protection features
    • LED short protection
    • Over-current protection
    • Thermal shutdown
    • VDD over-voltage protection

Applications

  • LED lighting system

Block Diagram

Block Diagram - onsemi NCL35076 Wide Analog Dimming CCM Buck Controllers
Published: 2021-03-23 | Updated: 2022-03-11