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TPS61161: About CTRL pin noise

Sho Ogane
Genius 5575 points
Part Number: TPS61161

Hi all.

This device has Flexible Digital and PWM Brightness Control.
If there is noise on CTRL pin when the CTRL pin keeps high, does the device change mode(PWM mode or Flexible Digital )?
If there is noise on CTRL pin,  Is there a possibility that the LED turn off?

Best Regars,
Sho

  • 0
    TI__Expert 4550 points

    Hi Sho

    Once the dimming mode is programmed, it can not be changed without another start-up. This means the device needs to be shutdown by pulling the CTRL low for 2.5 ms and restarts.

    If the noice on CTRL pin is too low and below the logic low of CTRL pin, it may turn the LED off.