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BQ25672: Questions about indicators

Part Number: BQ25672
Other Parts Discussed in Thread: BQ25306

Hi team,

Would you please answer following questions?

1. BQ25672 doesn't have voltage output pin which is in proportion to the charging current, only can read by REG33 IBAT_ADC_15:0, correct?

2. When WDT is expired, BQ25672 doesn't stop and move to default mode. If users want to stop charging, users should read /INT and stop via I2C.

3. Charging current limit can only set by ILIM_HIZ pin, correct? IINDPM_STAT is pulled high when overcurrent, correct? Please let me know if BQ25306 has other current limit setting or other overcurrent indicator.

Best regards,

Hideki

  • Hi Hideki,

    Regarding 1, correct.

    Regarding 2, correct. When watchdog expires, charge current resets to default but does not turn off.

    Regarding 3, input current limit is set by ILIM_HIZ.  If the load on SYS plus charge current out of BAT exceed the input power allowed by input current limit, then IINDPM_STAT stat reports IINDPM and an /INT is set if not masked.  The charge current reduces so that the system load gets all of the power.  BQ25306 does not have an indicator being in IINDPM.

    Regards,

    Jeff