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Original question:

BQ25672: Hi-Z mode and the IBAT current sense amp

BQ25622E: VREG minimum

Peter Schmuckal
Intellectual 350 points
Part Number: BQ25622E

Tool/software:

For BQ25622E, the VREG battery voltage charge threshold is settable from 3.5V ~ 4.8V according to the datasheet.

When in PREWARM temp range, the VREG can be adjusted from VREG-100mV to VREG-300mV with the TS_VSET_PREWARM reg.

Does this all work properly at lowest VREG setting? i.e. if we set VREG=3.5V and then enter PREWARM state with VREG-300mV, will the batt VREG drop and properly regulate to 3.2V?

  • 0
    TI__Mastermind 31550 points

    Hi Peter, 

    Yes, VREG can be properly regulated to 3.2V when in PREWARM temperature range with VREG = 3.5V and TS_VSET_PREWARM = VREG-300mV.  Please be aware VSYSMIN setting must be reduced to a value less than 3.2V to allow the device to terminate charge properly. 

    Best Regards,

    Garrett