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BQ2972: BQ29728DSER

M SANDEEP
Prodigy 160 points
Part Number: BQ2972
Other Parts Discussed in Thread: BQ76905

Dear Sir,

This is to inform you that, we are designing the sensors measurement board with battery pack supply, We have a requirement of Battery Pack Monitoring and Protection IC to sensor board.

1. We are using the 4.2V, 60Ah(approx.) battery pack to powering the different sensors & electronic circuit. The current rating of the battery is selected based on the usage of the battery (6 months usage in a different time intervals) but the total current consumption of the board is around 500mA.
2. Can we use BQ29728DSER Battery monitoring & Protection IC as per our requirement ?

3. Could you please verify and give your valuable suggestion or alternatives.

  • 0
    TI__Mastermind 25880 points

    Hi,

    The BQ29728 will provide the protections as described in the datasheet, but will not report any measurements if that is what you are looking for.

    The device is essentially a group of comparators looking for any overvoltage, undervoltage, or overcurrent conditions, and will then assert the relevant out pin to shut off a FET.

    If you're looking for a device that will read back voltage or current measurements then you may look into the BQ76905. This is a minimum 2 cell device however, unfortunately we do not have any high-integration monitors that support single cell systems.

    If all you're looking for is the autonomous protections, the BQ29728 should work for your system.

    Regards,

    Max Verboncoeur