BQ2084-V133 Datasheet, PDF (51/64 Pages) Texas Instruments – SBS v1.1-COMPLIANT GAS GAUGE FOR USE WITH THE bq29312

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DATA FLASH ADDRESS
HIGH BYTE LOW BYTE
0x10f
0x110
0x111
0x112
0x113
0x114
0x115
0x116
0x117
0x118
0x119
0x11a
0x11b
0x11c
0x11d
0x11e
0x11f
0x120
0x121
0x122
0x123
0x124
0x125
0x126
0x127
0x128
0x129
0x12a
0x12b
0x12c
0x12d
0x12e
0x12f
0x130
0x131
0x132
0x133
0x134
0x135
0x136
NAME
Max Charge Time
Precharge Detection Current
Charge Detection Current
Discharge Detection Current
Reserved
Reserved
Reserved
Permanent Fail Status
Permanent Fail Flag
Permanent Fail Config
Permanent Fail Input Time
Reserved
Reserved
FET Fail Charge Current
FET Fail Discharge Current
FET Fail Time
Charge OC Threshold
Charge OC Time
Discharge OC Threshold
Discharge OC Time
Fault Reset Time
VPACK Threshold
Shutdown Timer
Cell Imbalance Time
Reserved
bq2084-V133
SLUS640A – JUNE 2005 – REVISED JUNE 2005
LI-ION EXAMPLE
7200 s
10 mA
100 mA
-150 mA
0
0
0
0
20 mA
-20 mA
20 s
4000 mA
6s
10970 mA
10 s
30 s
20 s
20 s
DATA
MSB
LSB
1c
20
00
0a
00
64
ff
6a
10
68
10
36
00
00
00
00
00
17
12
26
73
00
20
ff
ec
14
0f
a0
06
2a
da
00
1e
07
d0
14
14
ADDITIONAL PROGRAMMING INFORMATION
ADDITIONAL DATA FLASH PROGRAMMING
The following sections describe the function of each data flash location and how the data is to be stored.
Fundamental Parameters
Sense Resistor Value
The 32-bit CC Delta (DF 0xcd-0xd0) corrects the coulomb counter for sense resistor variations. It represents the
gain factor for the coulomb counter. The 16-bit Sense Resistor Gain (DF 0xcb-0xcc) scales each integrating
converter conversion to mAh. The Current() related measurement Sense Resistor Gain is based on the
resistance of the series sense resistor. The following formula computes a nominal or starting value for Sense
Resistor Gain from the sense resistor value (in Ω).
Sense Resistor Gain = 306.25 ÷ Rs
RSNS Value (mΩ)
5
10
20
Sense Resistor Gain
61250
30625
15312
51