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參數(shù)資料
| 型號： | bq2014H |
| 廠商： | Benchmark Technology Group |
| 英文描述： | Low-Cost NiCd/NiMH Gas Gauge IC(低價格NiCd/NiMHGas Gauge芯片) |
| 中文描述： | 低成本鎳鎘/鎳氫電池電量監(jiān)測計(jì)芯片（低價格鎳鎘/ NiMHGas計(jì)芯片） |
| 文件頁數(shù)： | 6/22頁 |
| 文件大?。?/td> | 185K |
| 代理商： | BQ2014H |
2.
Programmed Full Count (PFC) or initial bat-
tery capacity:
The initial LMD and gas gauge rate values are pro-
grammed by using PROG
1
–PROG
4
. The bq2014H
is configured for a given application by selecting a
PFC value from Table 2. The correct PFC may be
determined by multiplying the rated battery capac-
ity in mAh by the sense resistor value:
Battery capacity (mAh)*sense resistor (
) =
PFC (mVh)
Selecting a PFC slightly less than the rated capac-
ity provides a conservative capacity reference until
the bq2014H “l(fā)earns”a new capacity reference.
Example: Selecting a PFC Value
Given:
Sense resistor = 0.05
Number of cells = 10
Capacity = 3500mAh,NiMH
Current range = 50mA to 1A
Relative display mode
Self-discharge =
NAC47
per day @ 25°C
Voltage drop over sense resistor = 2.5mV to 50mV
Nominal discharge voltage = 1.2V
Therefore:
3500mAh*0.05
= 175mVh
6
PROG
x
Pro-
grammed
Full
Count
(PFC)
PROG
4
= L
PROG
4
= Z or H
Units
1
2
PROG
3
= H
PROG
3
= Z
PROG
3
= L PROG
3
= H PROG
3
= Z PROG
3
= L
-
-
-
SCALE =
1/80
614
563
512
461
422
384
346
320
282
SCALE =
1/160
307
282
256
230
211
192
173
160
141
SCALE =
1/320
154
141
128
115
106
96.0
86.4
80.0
70.4
SCALE =
1/640
76.8
70.4
64.0
57.6
53.0
48.0
43.2
40.0
35.2
SCALE =
1/1280
38.4
35.2
32.0
28.8
26.4
24.0
21.6
20.0
17.6
SCALE =
1/2560
19.2
17.6
16.0
14.4
13.2
12.0
10.8
10.0
8.8
mVh/
count
mVh
mVh
mVh
mVh
mVh
mVh
mVh
mVh
mVh
H
H
H
Z
Z
Z
L
L
L
V
SR
equivalent to 2
counts/s (nom.)
H
Z
L
H
Z
L
H
Z
L
49152
45056
40960
36864
33792
30720
27648
25600
22528
90
45
22.5
11.25
5.6
2.8
mV
Table 2. bq2014H Programmed Full Count mVh, V
SR
Gain Selections
Pin
Connection
PROG
5
Self-Discharge Rate
DISP
Display State
H
Disabled
LEDs disabled
Z
NAC64
LEDs on when charging
L
NAC47
LEDs on for 4s
Table 1. Self-Discharge and Capacity Compensation
bq2014H
Preliminary
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| BQ2014HEVM-001 | 功能描述:電源管理IC開發(fā)工具 BQ2014H Eval Kit for NiMH 10.8V RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| BQ2014HSN | 功能描述:電池管理 NiCd/NiMH Gas Gauge RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
| BQ2014HSN-A309 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Low-Cost NiCd/NiMH Gas Gauge IC |
| BQ2014HSNG4 | 功能描述:電池管理 NiCd/NiMH Gas Gauge RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
| BQ2014HSNTR | 功能描述:電池管理 NiCd/NiMH Gas Gauge RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
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