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LP8866-Q1: Individual brightness control

Takashi Yamaguchi
Genius 13270 points
Part Number: LP8866-Q1
Other Parts Discussed in Thread: LP8864-Q1, LP8864S-Q1, LP8863-Q1

Hi team,

My customer is interested in the LP8866-Q1, LP8863-Q1, LP8864-Q1, and LP8864S-Q1. 

Customer would like to know whether these devices can control the LED brightness each channel individually. Also they want to know the minimum controllable series LED number on each driver.  They plan the Input voltage is 3.3V, and LED Vf is 3.0V.

I checked each d/s, and the result is as follows. Please correct me if I'm wrong.

- LP8866-Q1

Individual brightness control : No

Minimum series LED number : 2pcs

- LP8863-Q1

Individual brightness control : Yes

Minimum series LED number : 2pcs

- LP8864-Q1

Individual brightness control : Yes

Minimum series LED number : 2pcs

- LP8864S-Q1

Individual brightness control : Yes

Minimum series LED number : 2pcs

Regards,

Yamaguchi

  • 0
    TI__Genius 11836 points

    Hi Takashi-san,

    Only LP8863-Q1 supports controlling the LED brightness each channel individually. The minimum controllable series LED number on each driver depends on the topology and the VF of LED and it can support 1 LED using SEPIC topology.