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LM3421: What is the LM3421 max dimming ratio?

Jiawei Hu1
Expert 4365 points
Part Number: LM3421

Hi team,

As the title, What is the LM3421 max dimming ratio?

B.R

Jiawei

  • 0
    TI__Genius 17690 points

    Hi,

    The max dimming ratio is 100%.  If your are asking for minimum dimming ratio then it depends on the dimming frequency and the power stage design along with the control loop.  Please read section 8.3.12 for the minimum PWM on time.

    Thanks Tuan