• State TI Thinks Resolved
  • Locked Locked
  • Replies 1 reply
  • Answers 1 answer
  • Subscribers 62 subscribers
  • Views 218 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

TLC5971: Power management forum

joshua Ayres
Prodigy 20 points
Part Number: TLC5971
Other Parts Discussed in Thread: LP5012

I am developing with TI TLC5971PWPR LED driver and am using it to control 4 separate RGB's on my battery powered device. My device has a function where it enters low energy mode but the LED driver is still consuming 3.5 mA even when I have set all TLC5971PWPR OUTx values to 0x0000 and BC values to 0x00.

Can you help me with how to get the LED driver to consume less than 50uA? I would prefer to not have to add a mosfet to its power line.

  • 0
    TI__Expert 6440 points

    Hi，

    TLC5971 doesn't have EN pin to disable the device，so the cosume cannot less than 50uA unless you disconnect the VCC when you don't use it.

    But I‘d like to recommend you LP5012，which is also a 12 channel LED driver，and when you set EN pin to low，the power consumption could lower than 1uA，and when the EN pin is pulled high，if you set register Chip_en = 0，the supply current still lower than 10uA，which is suitable for battery powered applications.

    Thanks！

    Ives Li