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BQ2980: Short V- pin to VSS at every startup

S Z
Prodigy 10 points
Part Number: BQ2980

Tool/software:

I have an application where users can change the battery themselves.
I actually wanted to use a BQ297xx as a protective circuit. With this IC, the V- and VSS pins must be short-circuited each time the battery is inserted.
Of course, the end user cannot do this.

My question now is whether this is also the case with the BQ2980?
If so, does TI offer an IC where this is not the case?

Many thanks,

Simon

  • 0
    TI__Mastermind 38510 points

    Hello Simon,

    S Z said:
    With this IC, the V- and VSS pins must be short-circuited each time the battery is inserted.
    Of course, the end user cannot do this.

    Either this, or a charger needs to be attached. If a charger is attached, the part will also wake.

    S Z said:
    My question now is whether this is also the case with the BQ2980?
    If so, does TI offer an IC where this is not the case?

    Correct. A charger attached is required to wake the device after cell attachment. Either charger attach or shorting BAT+ to PACK+ briefly.

    Best Regards,

    Luis Hernandez Salomon

  • 0 in reply to Luis H. S.
    Prodigy 10 points

    Do you have an IC where you don't have to do this?
    So where you don't have to do a wakup after connecting a cell.
    Best regards
    Simon

  • +1 in reply to S Z
    TI__Mastermind 38510 points

    Hello Simon,

    Not for 1s protectors, unfortunately. This device was intended to be with the battery pack at all times, so it was not made to have a replaceable battery.

    Best Regards,

    Luis Hernandez Salomon