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DLPC3433: LED min current seting

Terry Tung
Prodigy 30 points
Part Number: DLPC3433

Hi 

for DLPC3433  LED current min setting question

why does the R/G/B pwm setting control not set to 0 ?

any reason share ? 

we hope get the more dark black pattern 

if not , dose there any suggestion for this purpose?

many thanks for help.

  • +1
    TI__Genius 12785 points

    Hello User,

    Welcome to the E2E forum.

    We do not allow for LED current adjustments continuously from 0 to 100%. There is a feedback loop wherein the DLP circuitry monitors the current being driven via the illuminators. If the driven current is too low there is a signal to noise ratio issue resulting in unpredictable performance.

    If you are looking for increased dimming control, you might consider using the AR version of the DLPC3433 available on the Firmware Selector Tool. These firmware images have programmed Looks with built in dark time to allow for reduced brightness.

    Regards,

    Austin