This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

TPS92663A-Q1: PWM Dimming

Part Number: TPS92663A-Q1


Tool/software:

Hi,

Based on the attached application example, I plan to use two LEDs per string instead of three (with Vf = 2.5V and I_LED = 5 mA). I have the following queries:

  • The datasheet mentions programmable 10-bit PWM dimming. Can we achieve 100 dimming steps with a maximum current per string of 5 mA, resulting in an approximate 50 µA step size?

  • Is it possible to feed both substrings using a single current source? Or is there an alternative approach to avoid using two separate buck current regulators?

  • If above configuration is not feasible, could you please suggest some other LED drivers, where individual LED control is present?

Thank you !