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LED Driver choice for outdoor application

Gabriel Reis
Prodigy 20 points

I need to make a 7 segment digit for outdoor applications. We wanna to use a LED driver to control the brightness and also report us fails as open circuit.

Each segment need to have 28 LEDs. Have anyone a driver to indicate?

We was concern initialy by multiplexing may be a problem in outdoor but as 1 digit uses 196 LEDs, if we multiplex fast enough it will not be a problem.

  • 0
    TI__Expert 5475 points
    Hi Gabriel,

    Sorry for the late response. The appropriate application engineer has been notified of your post and will respond accordingly. Thanks for your patience.

    Best regards,
    Shirley He
  • 0
    TI__Genius 14295 points
    Hi Gabriel,

    I have one concern: do you want each channel to drive 28 LEDs in serial?

    If not, can you show me more info about how you want to configure your 28 LEDs.

    Thanks.

    Regards,
    Kenneth
  • 0 in reply to Kenneth Du
    Prodigy 20 points

    Hi Kenneth,

    About the LEDs configuration I dont choose it yet. My objective is to control each segment individually so I wondering to use 1 channel per segment.

    I was looking for drivers and think the TLC591x could be a good choice. They have fault detection and I could control and dimming the LEDs so well.

    The problem will be to choose a good LED configuration for each segment because I dont want to use all of them in serial also I want to use 12V of power supply, but it can be changed. 

    Best Regards,

    Gabriel Reis.