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TLC5947: Alternative part

Gerald
Genius 9575 points
Part Number: TLC5947
Other Parts Discussed in Thread: LP55281, TLC5951, TLC59116, TLC5941, TLC5940

Hi Experts,

May I ask for help? I am looking for an available alternative of TLC5947 for our customer. 

The specific features they are interested in are the following:
- SPI interface (or control interface with max 4 wires)
- Constant current sink
- Channels can be combined to increase the power output capability of the chip
- Enough channels able to provide enough power to drive at least 4 LEDs at 150mA (combining channels)
- Cascadable (as many slave devices as possible)
- Individually controllable and dimmable via PWM
- Internal PWM clock
- Thermal shutdown and thermal pad for heat dissipation are desireable
- Maximum voltage applied to output as high as possible is a bonus

This should be it in terms of specification - for your reference, we are looking to control the chip using the Teknic ClearCore industrial motion controller: www.teknic.com/.../clearcore_user_manual.pdf

I have found LP55281, but was not sure if this will fit. If this wont fit, please help us by suggesting a better product that can meet the above requirements. Thank you so much.

Kind regards,
Gerald

  • +1
    TI__Genius 12915 points

    Hi Gerald,

    If customer are looking for the device similar with TLC5947, TLC5951 which is also a 24-channel PWM output device with series digital interface could be recommended. With similar protocol, some high current but less channel number device like TLC5940 / TLC5941 should be OK. If customer can accept bus protocol like I2C, TLC59116 can also meet other requirements.

  • 0 in reply to Hardy Wu
    TI__Genius 9575 points

    Hi Hardy,

    Thank you so much for your help. I will discuss this with our customer and will initially tagged this as resolved. Will let you know if we stil received feedback.

    Kind regards,
    Gerald