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Original question:

BQ77915: Datasheets of BQ77915

BQ77915: bq77915

jishnu ravi
Prodigy 50 points
Part Number: BQ77915

i need the spec for undervoltage protection in bq77915, values to be used. and if possible an external cell balancing circuit diagram linked with bq77915

  • 0
    TI__Guru* 81034 points

    Hi Jishnu,

    The datasheet shows the undervoltage accuracy in the Electrical Characteristics tables. It is +/-18mV at 25C, and the spec is a little wider over different temperature ranges (see page 7 of the datasheet).

    This video about BQ77915 Cell Balancing has an example schematic with external FETs: https://www.youtube.com/watch?v=wewL0oJRBNM

    External FETs are needed only if the balancing current needs to be higher than 50 mA.

    Best regards,

    Matt