• State TI Thinks Resolved
  • Locked Locked
  • Replies 1 reply
  • Answers 1 answer
  • Subscribers 64 subscribers
  • Views 101 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.

BQ79654-Q1: Unable to communicate with the BQ97654 IC using UART

Sameer Chandak
Prodigy 10 points
Part Number: BQ79654-Q1

Tool/software:

Hey i am using the BQ79654 IC for SOC and SOH management 
On the datasheet it is mentioned that the LDOIN pin should be around 6V. But after measuring the voltage it is around 4.8V
I have made the same connections as per the Dev board with the same NPN transistor ZXTN4004KQTC. I think because of this i am unable to communicate with the IC 
Can anyone please confirm this hypothesis of mine 
Thanks in advance 

  • 0
    TI__Expert 5130 points

    Hello Sameer,

    Yes, this voltage does seem abnormally low. 

    If you are following the EVM configuration and the same components, then we should not expect an issue. 

    Is this your own board, or are you using one of our devices?


    I'm assuming the device in shutdown? LDOIN may be lower in shutdown, but it expected to be a steady 6V in active mode.

    Best,

         Quentin