Wide Analog Dimming CCM Buck Controller

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Overview

The NCL35076 is a DC-DC buck controller for wide dimming range downto 1% by analog dimming control to relieve audible noise and flicker inPWM dimming. ON’s proprietary LED current calculation techniquedriven by zero input offset amplifiers performs precise constant current inthe whole analog dimming range. Multi-mode operation provides low LEDcurrent ripple with small output capacitor by CCM at heavy load and deepanalog dimming by DCM at light load.

  • LED Lighting
  • Smart LED Driver
  • LED lamp
  • LED tube
  • LED street light
  • LED ceiling light
  • Zero input offset Amplifiers at LED current calculator block and OTA
  • CCM to DCM transition by dimming condition
  • PWM Dimming by PWM signal
  • Standby mode operation
  • Various Protections; Auto Restart (AR)
    - VDD Over Voltage Protection (OVP)
    - Short LED Protection (SLP)
    - Over Current Protection (OCP)
    - Thermal Shut Down (TSD)
  • CCM operation at full load

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NCL35076AADR2G

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Active

CAD Model

Pb

A

H

P

SOIC-8

1

260

REEL

3000

Y

Step-Down

10.7

~NA~

< VIN

~NA~

500

$0.3397

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