Wide Analog Dimming Quasi-Resonant Buck Controller

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Overview

The NCL30076 is a DC-DC buck controller for wide dimming rangedown to 1% by analog dimming control to relieve audible noise and flickerin PWM 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 highefficiency with minimized switching loss by QR 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
  • QR 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)
  • QR Operation at full load

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NCL30076AADR2G

Active

Pb

A

H

P

SOIC-8

1

260

REEL

3000

Y

Step-Down

10.7

~NA~

< VIN

~NA~

500

$0.3087

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