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BQ27541-V200_17 Datasheet, PDF (16/46 Pages) Texas Instruments – Single Cell Li-Ion Battery Fuel Gauge for Battery Pack Integration | |||
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bq27541-V200
Not Recommended for New Designs
SLUSA11B â FEBRUARY 2010 â REVISED SEPTEMBER 2013
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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.
0x2f SOH Status: this read-only function returns an unsigned integer value, indicating the status of the SOH
percentage. The meanings of the returned value are:
⢠0x00: SOH not valid (initialization)
⢠0x01: Instant SOH value ready
⢠0x02: Initial SOH value ready
â Calculation based on uncompensated Qmax
â Updated at first grid point update
⢠0x03: SOH value ready
â Utilize the updated Qmax update
â Calculation based on compensated Qmax
â Updated after complete charge and relax is completed
⢠0x04-0xFF: Reserved
PassedCharge( ): 0x34/0x35
This signed integer indicates the amount of charge passed through the sense resistor since the last IT simulation
in mAh.
DOD0( ): 0x36/0x37
This unsigned integer indicates the depth of discharge during the most recent OCV reading.
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