BQ27541-V200_17 Datasheet, PDF (22/46 Pages) Texas Instruments – Single Cell Li-Ion Battery Fuel Gauge for Battery Pack Integration

bq27541-V200
Not Recommended for New Designs
SLUSA11B – FEBRUARY 2010 – REVISED SEPTEMBER 2013
www.ti.com
Table 7. Data Flash Summary (continued)
Class
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
82
82
82
83
88
89
104
104
104
104
104
104
104
107
112
112
112
112
112
112
Subclass
State
State
State
OCV Table
Data
Data
Data
Data
Data
Data
Data
Data
Data
Current
Codes
Codes
Codes
Codes
Codes
Codes
Offset
11
15
17
0
0-31
0-31
0
4
8
10
11
12
13
1
0
4
8
12
16
20
Name
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
I2
I2
I2
H2
F4
F4
I2
I1
I1
I1
I1
U1
H4
H4
H4
H4
H4
H4
Min Value Max Value Default Value
–32768
0
0
0
1.00E-01
2.98E+04
–32768
–128
–128
–128
–128
0
0
0
0
0
0
0
32767
2
32767
0
32767
32767
FFFF
0107
See Note 1
See Note 1
4.00E+01
0.47095
1.19E+06
5.595e5
32767
–1200
127
0
127
0
127
0
127
0
255
5
ffffffff
36720414
ffffffff
ffffffff
ffffffff
01234567
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
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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