• State TI Thinks Resolved
  • Locked Locked
  • Replies 1 reply
  • Answers 1 answer
  • Subscribers 63 subscribers
  • Views 281 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.

BQ77915: PRES pin low threshold

Jesse Ellison
Prodigy 55 points
Part Number: BQ77915

Hello,

The datasheet lists the voltage threshold to bring the IC out of hibernate as between 1.2V and 1.75V. What is the threshold to put the IC back into hibernate? The datasheet only mentions to let the pin float.

Thanks,
Jesse

  • 0
    TI__Guru 54715 points

    Hi Jesse,

    The BQ77915 PRES pin has a current limited pull down which does draw more current in the threshold region, see figure 1 in the data sheet .  Unfortunately a voltage to enter hibernation is not a characterized parameter.  0.5 V or below may be a reasonable target, if you are concerned it may be better to drive the pin high with an open drain type driver to enable and allow the pin to float to disable.