BQ27510_08 Datasheet, PDF (13/36 Pages) Texas Instruments – System-Side Impedance Track™ Fuel Gauge With Direct Battery Connection

bq27510
www.ti.com.......................................................................................................................................................... SLUS816A – MARCH 2008 – REVISED JUNE 2008
MaxLoadCurrent( ): 0x1e/0x1f
This read-only function returns a signed integer value, in units of mA, of the maximum load conditions. The
MaxLoadCurrent( ) is an adaptive measurement which is initially reported as the maximum load current
programmed in Initial Max Load Current. If the measured current is ever greater than Initial Max Load Current,
then MaxLoadCurrent( ) updates to the new current. MaxLoadCurrent( ) is reduced to the average of the
previous value and Initial Max Load Current whenever the battery is charged to full after a previous discharge
to an SOC less than 50%. This prevents the reported value from maintaining an unusually high value.
MaxLoadTimeToEmpty( ): 0x20/0x21
This read-only function returns an unsigned integer value of the predicted remaining battery life at the maximum
load current discharge rate, in minutes. A value of 65,535 indicates that the battery is not being discharged.
AvailableEnergy( ): 0x22/0x23
This read-only function returns an unsigned integer value of the predicted charge or energy remaining in the
battery. The value is reported in units of mWh.
AveragePower( ): 0x24/0x25
This read-only function returns an unsigned integer value of the average power of the current discharge. A value
of 0 indicates that the battery is not being discharged. The value is reported in units of mW.
TimeToEmptyAtConstantPower( ): 0x26/0x27
This read-only function returns an unsigned integer value of the predicted remaining operating time if the battery
is discharged at the AveragePower( ) value in minutes. A value of 65,535 indicates AveragePower( ) = 0. The
fuel gauge automatically updates TimeToEmptyatContantPower( ) based on the AveragePower( ) value every
1 s.
CycleCount( ): 0x2a/0x2b
This read-only function returns an unsigned integer value of the number of cycles the battery has experienced
with a range of 0 to 65,535. One cycle occurs when accumulated discharge ≥ CC Threshold.
StateOfCharge( ): 0x2c/0x2d
This read-only function returns an unsigned integer value of the predicted remaining battery capacity expressed
as a percentage of FullChargeCapacity( ), with a range of 0 to 100%.
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