• State TI Thinks Resolved
  • Locked Locked
  • Replies 1 reply
  • Answers 1 answer
  • Subscribers 29 subscribers
  • Views 306 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

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.

DRV8834: Do I need to use Sleep and Enable control lines

MERLE PITTMAN
Prodigy 50 points
Part Number: DRV8834

I am using this driver (DRV8834) to run a stepper in indexer mode.  I am trying to minimize the number of control pins I have to connect back to my micro.

Is it required to control both the Enable and Sleep pins?  Can I just pull the Enable line to ground through a resistor (to enable it) and control the driver from the micro using the Sleep line?  Are there any downsides to doing this?  Extra Iq?

  • 0
    TI__Guru** 114905 points

    Hi Merle,

    It is not required to control both nENBL and nSLEEP. You can configure the two pins as you suggested.

    The downsides depend on the use case.

    From the input side, there is no downside. nENBL has an internal pulldown so there is no additional current.

    When the device is awake, the outputs cannot be disabled. This will consume extra current.

    To minimize the system current, the device should be set to sleep mode. The downside is the time required to wake up could affect performance.