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Multi TLC5923

javad safaie
Prodigy 95 points
Other Parts Discussed in Thread: TLC5923

Hello,

I am using two TLC5923 for driving 32 LEDs in cascade mode. Every thing works perfect. Because i would like to have more dynamic range in driving current (more than 128 steps which is provided by programming), i am using two potentiometer for changing the reference current of these two. However when i want to change their ref current with together, it is a bit difficult. Is there any solution to use one potentiometer for two or more cascaded TLC5923 ?

thanks in advance

  • 0
    TI__Intellectual 955 points

     Hello Javad,

     If you can use 4pcs of TLC5923 for 32 LEDs, please try to tie 2 channels constant current output to one for 1 LED driving.  Then the LED current control step can be increased to 256 step by data setting to dot correction register of each channel.

     Best regards,

    Kazuya Nakai