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LP8863-Q1: VHEADROOM LED_DRV_HEADROOM

Masatoshi Oguri
Expert 4780 points
Part Number: LP8863-Q1

Hello,

Is VHEADROOM in p.7 of the datasheet the same as LED_DRV_HEADROOM in p.16?

Similarly, is VHEADROOM_HYST the same as "+0.5v" in Figure 10 in p.16?

What does "led_driver_headroom = 01b" mean?

Thanks!

Regards,

Oguri

  • 0
    TI__Expert 4565 points

    Hi Oguri-san,

    Yes,  your understanding is correct.

    VHEADROOM is LED low compactor level which is same as LED_DRV_HEADROOM on page 16.

    VHEADROOM_HYST is LED mid comparator level which is same as LED_DRV_HEADROOM_0.5V on page 16.

    "led_driver_headroom = 01b" is showing internal control which is not supposed to appear on this table, and it will be removed on next datasheet update. Please ignore this.

    And please send me an email if you have any questions which may be faster for you to get an answer as E2E questions are forwarded from other places and potentially takes more time to reach to me.

    Hope this helps,