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參數(shù)資料
| 型號(hào)： | bq2050 |
| 廠商： | Benchmark Technology Group |
| 英文描述： | Lithium Ion Power Gauge IC(鋰離子電源Gause 芯片) |
| 中文描述： | 鋰離子動(dòng)力計(jì)IC（鋰離子電源高斯芯片） |
| 文件頁數(shù)： | 12/21頁 |
| 文件大?。?/td> | 235K |
| 代理商： | BQ2050 |
The
capacity inaccurate
flag (CI) is used to warn the
user that the battery has been charged a substantial
number of times since LMD has been updated. The CI
flag is asserted on the 64th charge after the last LMD
update or when the bq2050 is reset. The flag is cleared
after an LMD update.
The CI values are:
Where CI is:
0
When LMD is updated with a valid full dis-
charge
1
After the 64th valid charge action with no
LMD updates or the bq2050 is reset
The
valid discharge
flag (VDQ) is asserted when the
bq2050 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 sustained at V
SRO
> V
SRQ
for at
least 256 NAC counts.
The EDV1 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 EDV1 is asserted with the
temperature less than 0°C
1
On first discharge after NAC = LMD
The
first end-of-discharge warning
flag (EDV1)
warns the user that the battery is almost empty. The
first segment pin, SEG
1
, is modulated at a 4Hz rate if
the display is enabled once EDV1 is asserted, which
should warn the user that loss of battery power is immi-
nent. The EDV1 flag is latched until a valid charge has
been detected. The EDV1 threshold is externally con-
trolled via the VTS register (see Voltage Threshold Reg-
ister on this page).
The EDV1 values are:
Where EDV1 is:
0
Valid charge action detected, V
SB
≥
V
TS
1
V
SB
< V
TS
providing that the discharge rate is
< 2C
The
final end-of-discharge warning
flag (EDVF) flag
is used to warn that battery power is at a failure condi-
tion. All segment drivers are turned off. The EDVF flag
is latched until a valid charge has been detected. The
EDVF threshold is set 50mV below the EDV1 threshold.
The EDVF values are:
Where EDVF is:
0
Valid charge action detected, V
SB
≥
(V
TS
-
50mV)
1
V
SB
< (V
TS
- 50mV) providing the discharge
rate is < 2C
Temperature Register (TMP)
The read-only TMP register (address=02h) contains the
battery temperature.
The bq2050 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 in Table 7.
The bq2050 calculates the gas gauge bits, GG3-GG0 as a
function of CACH and LMD. The results of the calculation
give available capacity in
116
increments from 0 to
1516
.
12
bq2050
FLGS1 Bits
7
6
5
4
3
2
1
0
-
-
-
CI
-
-
-
-
FLGS1 Bits
7
6
5
4
3
2
1
0
-
-
-
-
VDQ
-
-
-
FLGS1 Bits
7
6
5
4
3
2
1
0
-
-
-
-
-
-
EDV1
-
FLGS1 Bits
7
6
5
4
3
2
1
0
-
-
-
-
-
-
-
EDVF
TMP Temperature Bits
7
6
5
4
3
2
1
0
TMP4 TMP3 TMP2 TMP1
-
-
-
-
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| BQ2050H | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Low-Cost Lithium Ion Power Gauge IC |
| bq2050hevm | 制造商:Texas Instruments 功能描述: |
| BQ2050HEVM-002 | 功能描述:電源管理IC開發(fā)工具 BQ2050H Eval Kit for Li-Ion 10.8V RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評(píng)估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| BQ2050HSN | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Low-Cost Lithium Ion Power Gauge IC |
| BQ2050HSN-A308 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Low-Cost Lithium Ion Power Gauge IC |
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