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TPS923653: Any issue with dimming when max output current is only 100mA?

Cameron Wutzke
Expert 3552 points
Part Number: TPS923653

Tool/software:

Looking at the dimming ratios in the datasheet, is there any issue hitting the 1M:1 dimming ratio when the max string current is only 100mA?

Thanks! 

  • 0
    TI__Mastermind 23190 points

    Hi Cameron,

    It is very hard to achieve the 1M:1 dimming ratio with good linearity when max output current is only 100mA. The CSN pin leakage current, the leakage current through OVP resistor divider and other non-ideal factors will make the linearity very poor at low-brightness condition.

    Best Regards,

    Steven