• State Resolved
  • Locked Locked
  • Replies 1 reply
  • Subscribers 63 subscribers
  • Views 112 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.

TPS2543: Start-up

Kotaro Yamashita
Intellectual 2180 points
Part Number: TPS2543

Hi Team,

My customer have a plan to connect Host to EN, CTL1-3 and ILIM_SEL pins of TPS2543 directly. 

During start-up of system, Host's output may unstable less than 3.3V(=Vcc of host).

In this case, is there any concern of TPS2543? Do they need to add pull-up/down resistors?

Regards,

Kotaro Yamashita 

  • 0
    TI__Mastermind 28850 points

    Hello Kotaro,

    I believe you will be fine. If you look in the datasheet, the actual value that distinguishes between a logic high or low is 1.8V instead of the 3.3V. If you  believe these pins will drop below this threshold, than you at want to add a pull up resistor. If the voltage level will stay above 1.8V, than you should be fine.

    Hope this answers your question. If so, please click THIS RESOLVED MY ISSUE