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Independent dimming of LED driver

Takahiro Nishizawa
Genius 5575 points
Other Parts Discussed in Thread: TLC59108, TLC5925, TLC59116, TLC5946, TLC5971, TLC5923, TLC5922

Please tell us the LED driver that meet the following conditions.

Independent dimming

VLED=over 12V

LED current=30mA per channel

Dimming RGB LED, not backlight

over 12 channel

We found TLC59108.

Do you know other products?

Best regards,

Takahiro Nishizawa

  • 0
    Genius 5575 points
    Thank you for your answer!


    It's possible to achieve independent dimming of each channel.
    You're correct and it's controlled by seting ON/OFF time. For example, turning ON for 100 us and OFF for 900 us achieves 10% duty cycle.

    Please tell us the method to control ON/OFF time.
    by register?

    We cannot find the method in datasheet.
    For example, TLC59108 has register to set the dimming per ch.
    We want to know the dimming method per channel about TLC5925.

    Best regards,


    Takahiro Nishizawa
  • 0 in reply to Takahiro Nishizawa
    TI__Genius 14295 points
    Hi, Takahiro-san,

    I've answered your question in your formmer post:
    e2e.ti.com/.../2551091

    For this original post, if you are looking for an I2C interface LED driver, TLC59116 has 16 channels and can support Vled up to 20V.

    If SPI interface is also a choice, you can take a look for TLC5922, TLC5923, TLC5971, and TLC5946.

    If you think this answers your question, please help to click "Resolve".

    Thanks.
    Regards,
    Kenneth