• State
  • Locked Locked
  • Replies 1 reply
  • Subscribers 29 subscribers
  • Views 288 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.

DRV8802 internall pull ups / pull downs

anuja karadkhedkar
Prodigy 140 points
Other Parts Discussed in Thread: DRV8802

Hello,

I would like to know if DRV8802 has internal pull up / pull down resistors for xPHASE, xENBL, nSLEEP, nFAULT, nRESET, xI0, xI1,

The EVAL board does not include external reistors at these pins.

Is it safe to have external resistors here? 

What is the  max current capability of these pins ?

  • 0
    TI__Mastermind 26065 points

    Hi Anuja

    There are 100k pull down resistors on xPHASE, xENBL, nSLEEP, nRESET and xI0, xI1.

    All above pins are input pins with high impedance. You can connect voltage source to those pins directly or with serial resistors just make sure the H/L range of the pins matching the datasheet. No need to care about the current capability.

    nFAULT is an Open Drain output should be connected to external pull up resistor. It is recommended to make the turn on current < 5mA. So for 3.3V logic, please use pull up >= 660 ohm.

    Best regards,