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(yè)數(shù)： 8/21頁(yè)
文件大?。?/td> 235K
代理商： BQ2050
Charge Compensation
The bq2050 applies the following temperature compen-
sation to NAC during charge:
This compensation applies to both types of Li-Ion cells.
Self-Discharge Compensation
The self-discharge compensation is programmed for a
nominal rate of
1512
*NAC per day. This is the rate for a
battery within the 20°C–30°C temperature range.
rate varies across 8 ranges from < 10°C to > 70°C, chang-
ing with each higher temperature (approximately 10°C).
See Table 5 below:
This
Self-discharge may be disabled by connecting PROG
5
= H.
Digital Magnitude Filter
The bq2050 has a digital filter to eliminate charge and dis-
charge counting below a set threshold. The bq2050 setting
is 200
μ
V for V
SRD
and 210
μ
V for V
SRQ
.
8
bq2050
Temperature Range
Typical Rate
PROG
5
= Z or L
< 10°C
NAC2048
10–20°C
NAC1024
20–30°C
NAC512
30–40°C
NAC256
40–50°C
NAC128
50–60°C
NAC64
60–70°C
NAC32
> 70°C
NAC16
Table 5. Self-Discharge Compensation
Approximate
Discharge Rate
Discharge
Compensation
Factor
Efficiency
<
0.5C
1.00
100%
≥
0.5C
1.05
95%
Table 3A. Graphite Anode
Temperature
Temperature
Compensation
Factor
Efficiency
≥
10°C
1.00
100%
0°C to 10°C
1.10
90%
-10°C to 0°C
1.35
74%
≤
-10°C
2.50
40%
Table 3B. Graphite Anode
Approximate
Discharge Rate
Discharge
Compensation
Factor
Efficiency
<
0.5C
1.00
100%
≥
0.5C
1.15
86%
Table 4A. Coke Anode
Temperature
Temperature
Compensation
Factor
Efficiency
≥
10°C
1.00
100%
0°C to 10°C
1.25
80%
-10°C to 0°C
2.00
50%
≤
-10°C
8.00
12%
Table 4B. Coke Anode
Temperature
Temperature
Compensation
Factor
Efficiency
<
10°C
0.95
95%
≥
10°C
1.00
100%
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