LP8866-Q1: 16.5us pulse to PWM input

Roy Chou1

Part Number: LP8866-Q1

Hi Team,

We used MCU to provide PWM input signal to LP8866 and we found when we waked up MCU, the control pin had a pulse to LED driver.(LED driver was enabled then.)

Does it affect LED driver to have fault behavior?

Thank you for your support.

Regards,

Roy

over 3 years ago

0 Xiaoguang over 3 years ago

TI__Genius 17540 points

Roy,

You may refer to 7.4.10 Start-Up Sequence in datasheet. If the pulse is appeared during normal operation period, then it impacts. Or else, it is ok.

Regards,

Xiaoguang

0 Roy Chou1 over 3 years ago in reply to Xiaoguang

TI__Genius 16080 points

Hi Xiaoguang,

Thanks for information.

Does it mean the PWM input signal before NORMAL period can be ignored? Thank you.

Regards,

Roy

0 Xiaoguang over 3 years ago in reply to Roy Chou1

TI__Genius 17540 points

Roy,

Yes, it can be ignored.

Regards,

XG.

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LP8866-Q1: 16.5us pulse to PWM input