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BQ2057T/W add RB1/RB2 divider to BAT pin.

Terry Wu
Expert 1680 points
Other Parts Discussed in Thread: BQ2057T

Dear Sirs,

I refer this discussion to know only BQ2057T/W support voltage regulation. https://e2e.ti.com/support/power_management/battery_management/f/179/t/38095

But BQ2057T add RB1/RB2(200K/200K)  feed to "BAT" pin.

There's 1.6~8mA lekage current . Looks like IC keep active can't enter sleep mode.

Would you please give advise on this problem ?  Many thanks !

  • 0
    TI__Expert 7730 points
    Do you mean that because of this leakage, the chip cannot go to charging termination?
    The termination threshold is the voltage at SNS pin, and you can change RSNS to increase the termination current so that it is above the leakage caused by RB1/RB2.
    The other option can be increasing RB1/RB2 so that the leakage is smaller.

    Thanks,
    Wenjia