Typical operating characteristics (continued) – Rainbow Electronics MAX17047 User Manual
Page 5
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MAX17047
ModelGauge m3 Fuel Gauge
Typical Operating Characteristics (continued)
(T
A
= +25°C, unless otherwise noted.)
CURRENT ADC ERROR
vs. TEMPERATURE
MAX17047 toc04
CURRENT FORCED (A)
CURRENT ADC ERROR (mA)
1
0
-1
-10
-5
0
5
10
15
-15
-2
2
T
A
= +70°C
T
A
= -20°C
T
A
= +25°C
RESPONSE TO TEMPERATURE TRANSIENT
AT CONSTANT-CURRENT LOAD
MAX17047 toc06
TIME (Hr)
SOC (%), TEMPERATURE (°C)
V
CELL
(V
)
2
1
10
20
30
40
50
60
EMPTY VOLTAGE
TEMPERATURE
SOC
AV
SOC
REP
70
80
90
100
0
2.6
2.8
3.0
3.2
3.4
3.6
3.8
4.0
4.2
4.4
2.4
0
3
V
CELL
RISES WITH
TEMPERATURE DURING
CONSTANT LOAD
FUEL GAUGE CHANGES
TRAJECTORY AFTER
TEMPERATURE CHANGE
90
80
60 70
20 30 40 50
10
0
100
AUXILIARY INPUT ADC ERROR
vs. TEMPERATURE
MAX17047 toc05
AIN RATIO TO V
TT
(%)
AUXILIARY INPUT ADC ERROR (%)
-0.80
-0.60
-0.40
-0.20
0
0.20
0.40
0.60
0.80
1.00
-1.00
T
A
= +70°C
T
A
= -20°C
T
A
= +25°C
END-OF-CHARGE DETECTION
TIME (Hr)
CAPACITY (mAh); CURRENT (mA)
6
4
2
-1000
0
1000
2000
3000
4000
5000
6000
7000
8000
-2000
2.9
3.1
3.3
3.5
3.7
3.9
4.1
4.3
4.5
4.7
2.7
0
8
V
CELL
(V
)
VALID END-OF-CHARGE
DETECTION EVENT
NEAR-FULL
FALSE CHARGE
TERMINATION
EVENTS
FullCAP
V
CELL
CURRENT
RemCap
REP
MAX17047 toc07