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參數(shù)資料
| 型號： | bq2011 |
| 廠商： | Benchmark Technology Group |
| 英文描述： | Gas Gauge IC for High Discharge Rates(用于高放電率的氣體Gauge芯片) |
| 中文描述： | 氣體計IC，高放電率（用于高放電率的氣體計芯片） |
| 文件頁數(shù)： | 12/20頁 |
| 文件大?。?/td> | 181K |
| 代理商： | BQ2011 |
The
valid discharge
flag (VDQ) is asserted when the
bq2011 is discharged from NAC=LMD. The flag remains
set until either LMD is updated or one of three actions
that can clear VDQ occurs:
The self-discharge count register (SDCR) has
exceeded the maximum acceptable value (4096
counts) for an LMD update.
A valid charge action equal to 256 NAC counts with
V
SRO
< -400
μ
V.
The EDV flag was set at a temperature below 0°C
The VDQ values are:
Where VDQ is:
0
SDCR
≥
4096, subsequent valid charge ac-
tion detected, or EDV is asserted with the
temperature less than 0°C
1
On first discharge after NAC = LMD
The
end-of-discharge warning
flag (EDV) warns the
user that the battery is empty. SEG1 blinks at a 4Hz
rate. EDV detection is disabled if V
SR
> V
SR1
. The EDV
flag is latched until a valid charge has been detected.
The EDV values are:
Where EDV is:
0
Valid charge action detected and V
SB
≥
0.90V
1
V
SB
< 0.90V providing that V
SR
< V
SR1
Temperature and Gas Gauge Register
(TMPGG)
The read-only TMPGG register (address=02h) contains
two data fields. The first field contains the battery tem-
perature. The second field contains the available charge
from the battery.
The bq2011 contains an internal temperature sensor.
The temperature is used to set charge and discharge ef-
ficiency factors as well as to adjust the self-discharge co-
efficient.
The temperature register contents may be
translated as shown below.
The bq2011 calculates the available charge as a function
of NAC, temperature, and a full reference, either LMD
or PFC. The results of the calculation are available via
the display port or the gas gauge field of the TMPGG
register. The register is used to give available capacity
in
116
increments from 0 to
1516
.
12
bq2011
TMPGG Temperature Bits
7
6
5
4
3
2
1
0
TMP3
TMP2
TMP1
TMP0
-
-
-
FLGS1 Bits
7
6
5
4
3
2
1
0
-
-
-
-
-
-
EDV
-
TMPGG Gas Gauge Bits
7
6
5
4
3
2
1
0
-
-
-
-
GG3
GG2
GG1
GG0
FLGS1 Bits
7
6
5
4
3
2
1
0
-
-
-
-
VDQ
-
-
-
TMP3
TMP2
TMP1
TMP0
Temperature
0
0
0
0
T < -30°C
0
0
0
1
-30°C < T < -20°C
0
0
1
0
-20°C < T < -10°C
0
0
1
1
-10°C < T < 0°C
0
1
0
0
0°C < T < 10°C
0
1
0
1
10°C < T < 20°C
0
1
1
0
20°C < T < 30°C
0
1
1
1
30°C < T < 40°C
1
0
0
0
40°C < T < 50°C
1
0
0
1
50°C < T < 60°C
1
0
1
0
60°C < T < 70°C
1
0
1
1
70°C < T < 80°C
1
1
0
0
T > 80°C
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| BQ2011_05 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Gas Gauge IC for High Discharge Rates |
| BQ2011JPN | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Battery Management |
| BQ2011JPN-N | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Battery Management |
| BQ2011JSN | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Battery Management |
| BQ2011K | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Gas Gauge IC for High Discharge Rates |
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