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BQ25713: VDDA pin function

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Replies: 4

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Part Number: BQ25713

Hi, expert,

My customer is using BQ25713 for ultrasound smart probe. and they found in the datasheet of BQ25713, there is a short description of pin VDDA, and there is no block diagram to show the function of this pin. Could you please share more information about how VDDA works? Thanks.

Best Regards.

Chen

  • Hi Chen,

        VDDA is the pull-up rail for CELL_BATPRSEZ to detect cell count, as cell count is determined internally as a % of VDDA, by monitoring voltage on CELL_BATPRESZ pin.. It is also an available rail for pull up for pins like ILIM_HIZ, so customer has flexibility in using VDDA.

    Regards,

    Kedar Manishankar

    Applications Engineer

    Please click "This resolved my issue" button if this post answers your question

  • See above.

    Regards,

    Tiger Zhou, BCP-BMS, Texas Instruments

    Please click "This resolved my issue" button if this post answers your question.

  • In reply to Tiger Zhou:

    Hi, Tiger,

    Thanks for your reply. One more question is what is the voltage of VDDA, is it equal to REGN LDO's voltage? Thanks.

    Best Regards.

    Chen

  • In reply to CHEN YAN:

    Yes, VDDA is equal to REGN voltage 6V. 

    Regards,

    Tiger Zhou, BCP-BMS, Texas Instruments

    Please click "This resolved my issue" button if this post answers your question.

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