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BQ25890: The low temperature charge current problem

Part Number: BQ25890

Hi Team

   When we set the charge current from 2A to 500mA when the temperature decrease to 13℃. We can measure the current to be 2A by multimeter, and we also can read the register from MCU that the current is 2A. But we the TMP decrease 13℃, the charge current is 500mA from the multimeter, but we read the register that the current is only 100mA. We thinks the ADC has some problem ? Can you give some suggestion aabout this?

   

  • Hi,

    At cool temperature (T1–T2) REG0C[2:0]=011, ADC Ichg reading is not accurate. Please use the table below to configure the actual charging current.


    Thanks,

    Ning.

    Please click "This Resolved my issue" button if this post answer your question.