BQ28Z560-R1 datasheet(27/60 Pages) TI1

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bq28z560-R1

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SLUSBD3 – APRIL 2013

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 mW (Design Energy Scale = 1) or cW (Design Energy Scale = 10).

AveragePower(): 0x24/0x25

This read-word function returns an unsigned integer value of the average power of the current discharge. It is

negative during discharge and positive during charge. A value of 0 indicates that the battery is not being

discharged. The value is reported in units of mW (Design Energy Scale = 1) or cW (Design Energy

Scale = 10).

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 gas

gauge automatically updates TimeToEmptyatConstantPower() based on the AveragePower() value every 1 s.

Internal_Temp(): 0x28/0x29

This read-only function returns an unsigned integer value of the measured internal temperature of the device in

units of 0.1K measured by the gas gauge.

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%.

StateOfHealth(): 0x2e/0x2f

0x2E SOH percentage: This read-only function returns an unsigned integer value, expressed as a percentage of

the ratio of predicted FCC(25°C, SOH current rate) over the DesignCapacity(). The FCC(25°C, SOH current rate)

is the calculated full charge capacity at 25°C and the SOH current rate, which is specified in the data flash (State

of Health Load). The range of the returned SOH percentage is 0x00 to 0x64, indicating 0 to 100%,

correspondingly.

PassedCharge(): 0x34/0x35

This signed integer indicates the amount of charge passed through the sense resistor since the last Impedance

Track simulation in mAh.

DOD0(): 0x36/0x37

This unsigned integer indicates the depth of discharge during the most recent OCV reading.

SelfDischargeCurrent(): 0x38/0x39

This read-only command pair returns the signed integer value that estimates the battery self discharge current.

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