BQ2092_15 Datasheet, PDF (19/30 Pages) Texas Instruments – Gas Gauge IC with SMBus-Like Interface

Obsolete Device
bq2092
Table 8. Status Bits
Bit Name
OVER_CHARGE_ALARM
TERMINATE_CHARGE_ALARM
∆T/∆t_ALARM
OVER_TEMP_ALARM
TERMINATE_DISCHARGE_ALARM
REMAINING_CAPACITY_ALARM
REMAINING_TIME_ALARM
Bit Name
INITIALIZED
DISCHARGING
FULLY_CHARGED
FULLY_DISCHARGED
Alarm Bits
Set When:
Reset When:
bq2092 detects over-temperature or ∆T/ A discharge occurs or when ∆T/∆t, or
∆t. (Note: valid charge termina- over-temperature, ceases during
tion).
charge.
bq2092 detects over-current, over-
voltage, over-temperature, or ∆T/∆t
conditions exist during charge.
Charging current is set to zero, indi-
cating a charge suspend.
A discharge occurs or when all condi-
tions causing the event cease.
bq2092 detects the rate-of-
temperature increase is above the pro-
grammed value (valid termination)
The temperature rise falls below the
programmed rate.
bq2092 detects that its internal tem-
perature is greater than the pro-
grammed value (valid termination).
Internal temperature falls below
50°C.
bq2092 determines that it has sup-
plied all the charge that it can with-
out being damaged (EDVF).
VBAT > VEDVF signifying that the
battery has reached a state of charge
sufficient for it to once again safely
supply power.
bq2092 detects that the Remaining-
Capacity() is less than that set by
the RemainingCapacity() function.
Either the value set by the Remain-
ingCapacityAlarm() function is lower
than the Remaining Capacity() or
the RemainingCapacity() is in-
creased by charging.
bq2092 detects that the estimated Either the value set by the Remain-
remaining time at the present dis- ingTimeAlarm() function is lower
charge rate is less than that set by than the AverageTimeToEmpty() or
the RemainingTimeAlarm() function. a valid charge is detected.
Status Bits
Set When:
Reset When:
bq2092 is set when the bq2092 has Battery detects that power-on or
reached a full or empty state.
user-initiated reset has occurred.
bq2092 determines that it is not be- Battery detects that it is being
ing charged.
charged.
bq2092 determines a valid charge
termination. RM will then be set to
full charge percentage if necessary.
RM discharges below the full charge
percentage
bq2092 determines that it has
supplied all the charge that it can
without being damaged (that is, con-
tinued use will result in permanent
RelativeStateOfCharge is greater
than or equal to 20%
capacity loss to the battery)
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