LP8860-Q1: DRV_HEADER[2:0] , what's the best setting?

Expert 3040 points

Part Number: LP8860-Q1

Hi team,

My customer asked me what's the best settings of DRV_HEADER[2:0] which is LED current sink headroom control.

I saw there is several setting with 3bits, so if it is set to lowest or highest, what's the difference we see?

regards, ny

over 6 years ago

0 Shirley He over 6 years ago

TI__Expert 5475 points

Hi,

With higher voltage setting of DRV_HEADER, the LED current sink power consumption will be higher, the total efficiency will be lower.

With lower voltage setting, the efficiency can be higher. But the LED current may not be well regulated if there is a large voltage drop at the boost output.

0 NY over 6 years ago in reply to Shirley He

TI__Expert 3040 points

Hi Shirley, Thank you very much,

Power management

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LP8860-Q1: DRV_HEADER[2:0] , what's the best setting?