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BQ26220: RBI voltage for backup power

JatanNaik
Expert 4011 points
Part Number: BQ26220

On the BQ26220 Battery Monitor IC (Coulomb Counter), what voltage does RBI have to be to provide register backup power for absolute minimum current consumption ?  And what state should the other pins be for this register backup condition ?

  • 0
    TI__Expert 7315 points

    Hi Jatan,

    The RBI pin is not connected to a power source, just a 0.1uF cap. In hibernate mode, the RAM data will be maintained and the operating current will be approximately 600nA. See page 9 in the datasheet for description of this mode. 

    In hibernate mode, Vcc should be below the POR threshold (2.45V).