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BQ34Z100-G1: VREGIN above 2,7V

Lucas Oliveira
Prodigy 80 points
Part Number: BQ34Z100-G1

Tool/software:

I would like to know what happens if my circuit provides less than 2.7 V to the REGIN pin of the BQ34z100-G1 IC. If this happens, should I redo the two charge and discharge cycles of the battery to ensure the SoC is accurate?

Considering that this voltage cannot be lower than 2.7V, can I add an external power source (such as a coin cell battery) to power the IC in case of low battery pack voltage?

  • 0
    TI__Genius 11725 points

    Hello Lucas,

    this question has been assigned and will be answered promptly.

    Thank you,
    Alan

  • 0 in reply to Alan Frias
    Prodigy 80 points

    Hi Alan, 

    All right. I'll be waiting. 

    Regards,

    Lucas

  • 0 in reply to Lucas Oliveira
    TI__Genius 11725 points

    Hello Lucas,

    It appears that if your system provides less than 2.7V than either your running a really small battery pack which we might have to recommend a different battery gauge or you are going below your batteries termination voltage. Although adding a external power source would allow you to complete your cell learning cycle it would effect your battery gauge and make it act unexpectedly at the lower voltage ranges.

    Thank you,
    Alan

  • 0 in reply to Lucas Oliveira
    TI__Genius 11725 points

    Hello Lucas,

    It appears that if your system provides less than 2.7V than either your running a really small battery pack which we might have to recommend a different battery gauge or you are going below your batteries termination voltage. Although adding a external power source would allow you to complete your cell learning cycle it would effect your battery gauge and make it act unexpectedly at the lower voltage ranges.

    Thank you,
    Alan