BQ2083-V1P2 Datasheet, PDF (27/55 Pages) Texas Instruments – SBS-COMPLIANT GAS GAUGE IC FOR USE WITH THE bp29311

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bq2083-V1P2
SLUS573 − JULY 2003
Range: 0 to 65,534 min
Granularity: 2 min or better
Accuracy: ± MaxError( ) _* FullChargeCapacity( )/|AtRate( )|
Invalid Data Indication: 65,535 indicates the AtRate ≤ 0.
AtRateTimeToEmpty( ) (0x06)
Description: Returns the predicted remaining operating time if the battery is discharged at the AtRate( ) value.
Purpose: The AtRateTimeToEmpty( ) function is part of a two-function call-set used to determine the remaining
operating time at the AtRate( ) value. The bq2083−V1P2 updates AtRateTimeToEmpty( ) within 5 ms after the
SMBus host sets the AtRate( ) value. The bq2083−V1P2 automatically updates AtRateTimeToEmpty( ) based on
the AtRate( ) value every 1 s.
SMBus protocol: Read word
Output: Unsigned integerestimated operating time left.
Units: Minutes
Range: 0 to 65,534 min
Granularity: 2 min or better
Accuracy: -0,+MaxError( ) × FullChargeCapacity/|AtRate( )|
Invalid Data Indication: 65,535 indicates AtRate ≥ 0.
AtRateOK( ) (0x07)
Description: Returns a boolean value that indicates whether or not the battery can deliver the AtRate( )value
of additional energy for 10 seconds. If the AtRate value is zero or positive, the AtRateOK( ) function always returns
OK (logic 1).
Purpose: The AtRateOK( ) function is part of a two-function call-set used by power management systems to
determine if the battery can safely supply enough energy for an additional load. The bq2083−V1P2 updates
AtRateOK( ) within 5 ms after the SMBus host sets the AtRate( ) value. The bq2083−V1P2 automatically updates
AtRateOK( ) based on the At Rate( ) value every 1 second.
SMBus protocol: Read word
Output: Boolean—indicates if the battery can supply the additional energy requested.
Units: Boolean
Range: 1, 0
Granularity: Not applicable
Accuracy: Not applicable
Temperature( ) (0x08)
Description: Returns the temperature (K) measured by the bq2083−V1P2.
Purpose: The Temperature( ) function provides accurate cell temperatures for use by battery chargers and
thermal management systems. A battery charger can use the temperature as a safety check. Thermal
management systems may use the temperature because the battery is one of the largest thermal sources in a
system.
SMBus protocol: Read word
Output: Unsigned integer—cell temperature in tenth-degree Kelvin increments.
Units: 0.1°K
Range: 0 to +6553.5°K (real range)
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