BQ27541-V200_1007 Datasheet, PDF (22/43 Pages) Texas Instruments – Single Cell Li-Ion Battery Fuel Gauge for Battery Pack Integration

bq27541-V200
SLUSA11 – FEBRUARY 2010
www.ti.com
Table 7. Data Flash Summary (continued)
Class
Gas Gauging
Gas Gauging
Gas Gauging
Gas Gauging
Gas Gauging
Gas Gauging
Gas Gauging
Gas Gauging
Gas Gauging
Gas Gaigomg
Gas Gauging
Gas Gauging
Gas Gauging
Gas Gauging
Gas Gauging
Gas Gauging
Gas Gauging
Gas Gauging
Gas Gauging
Gas Gauging
OCV Table
Ra Tables
Ra Tables
Calibration
Calibration
Calibration
Calibration
Calibration
Calibration
Calibration
Calibration
Security
Security
Security
Security
Security
Security
Subclass
ID
80
80
80
80
81
81
81
81
81
81
81
82
82
82
82
82
82
82
82
82
83
88
89
104
104
104
104
104
104
104
107
112
112
112
112
112
112
Subclass
IT Cfg
IT Cfg
IT Cfg
IT Cfg
Current Thresholds
Current Thresholds
Current Thresholds
Current Thresholds
Current Thresholds
Current Thresholds
Current Thresholds
State
State
State
State
State
State
State
State
State
OCV Table
Data
Data
Data
Data
Data
Data
Data
Data
Data
Current
Codes
Codes
Codes
Codes
Codes
Codes
Offset
77
78
79
80
0
2
4
6
8
9
10
0
2
4
5
7
9
11
15
17
0
0-31
0-31
0
4
8
10
11
12
13
1
0
4
8
12
16
20
Name
DeltaV Max Delta
Max Sim Rate
Min Sim Rate
Ra Max Delta
Dsg Current Threshold
Chg Current Threshold
Quit Current
Dsg Relax Time
Chg Relax Time
Quit Relax Time
Max IR Correct
Qmax Cell 0
Cycle Count
Update Status
V at Chg Term
Avg I Last Run
Avg P Last Run
Delta Voltage
T Rise
T Time Constant
Chem ID
Cell0 R_a Table
xCell0 R_a Table
CC Gain (Note 4)
CC Delta Note 4)
CC Offset (Note 4)
Board Offset (Note 4)
Int Temp Offset
Ext Temp Offset
Pack V Offset
Deadband
Sealed to Unsealed
Unsealed to Full
Authen Key3
Authen Key2
Authen Key1
Authen Key0
Data
Type
U2
U1
U1
U2
I2
I2
I2
U2
U1
U1
U2
I2
U2
H1
I2
I2
I2
I2
I2
I2
H2
F4
F4
U2
I1
I1
I1
I1
U1
H4
H4
H4
H4
H4
H4
Min Value Max Value Default Value
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
–32768
–32768
–32768
0
0
0
1.00E-01
2.98E+04
–32768
–128
–128
–128
–128
0
0
0
0
0
0
0
65535
10
255
2
255
20
65535
44
2000
60
2000
75
1000
40
8191
60
255
60
63
1
1000
400
32767
1000
65535
0
6
0
5000
4200
32767
–299
32767
–1131
32767
2
32767
0
32767
32767
FFFF
0107
See Note 1
See Note 1
4.00E+01
0.47095
1.19E+06
5.595e5
32768
–1200
127
0
127
0
127
0
127
0
255
5
ffffffff
36720414
ffffffff
ffffffff
ffffffff
1234567
ffffffff
89ABCDEF
ffffffff
FEDCBA98
ffffffff
76543210
1. Encoded battery profile information created by bqEasy software.
2. Part number and/or part specific
3. Not IEEE floating point
4. Display as Data Flash value; value displayed in EVSW is different. See Table 8 for conversion table.
Units
mV
C/rate
C/rate
mOhm
mA
mA
mA
s
s
s
mV
mAh
Count
num
mV
mA
mA
mV
num
num
num
num
num
num
num
0.1°C
0.1°C
mV
mA
–
–
–
–
–
–
Class
SubClass
ID
Gas Gauging
80
Gas Gauging
80
Calibration
104
Calibration
104
Calibration
104
Calibration
104
SubClass
IT Cfg
IT Cfg
Data
Data
Data
Data
Table 8. Data Flash to EVSW Conversion
Offset
Name
59
User Rate-mW
63 Reserve Cap-mWh
0
CC Gain
4
CC Delta
8
CC Offset
10
Board Offset
Data
Type
I2
I2
F4
F4
I2
I1
Data Flash
Default
0
0
0.47095
5.595e5
–1200
0
Data
Flash
Unit
cW
cWh
Num
Num
Num
Num
EVSW
Default
0
0
10.124
10.147
–0.576
0
EVSW
Unit
mW
mWh
mΩ
mΩ
mV
µV
Data Flash (DF)
to EVSW
Conversion
DF × 10
DF × 10
4.768/DF
5677445/DF
DF × 0.00048
DF × 16/0.48
22
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