MAX17047/MAX17050
ModelGauge m3 Fuel Gauge
Typical Operating Characteristics
(T = +25°C, unless otherwise noted.)
A
SHUTDOWN CURRENT
vs. SUPPLY VOLTAGE
VOLTAGE ADC ERROR vs. TEMPERATURE
ACTIVE CURRENT vs. SUPPLY VOLTAGE
AND SUPPLY VOLTAGE
0.8
35
30
25
20
15
10
5
10
8
T
= +70°C
A
T
= +70°C
A
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
T
= +25°C
A
T
A
= -20°C
6
T
A
= +70°C
4
2
T
A
= +25°C
0
T
A
= -20°C
-2
-4
-6
-8
-10
T
= +25°C
A
T
3
= -20°C
4
A
0
0
1
2
5
0
1
2
3
(V)
4
5
2.2
2.7
3.2
3.7
4.2
V
BATT
(V)
V
V
BATT
(V)
BATT
CURRENT ADC ERROR
vs. TEMPERATURE
AUXILIARY INPUT ADC ERROR
vs. TEMPERATURE
15
10
5
1.0
0.8
0.6
T
A
= -20°C
0.4
T
A
= +70°C
0.2
0
0
-0.2
-0.4
-0.6
-0.8
-1.0
T
A
= +25°C
-50
-10
-15
T
= +25°C
T
A
= +70°C
A
T
A
= -20°C
-2
-1
0
1
2
0
10 20 30 40 50 60 70 80 90 100
CURRENT FORCED (A)
AIN RATIO TO V (%)
TT
RESPONSE TO TEMPERATURE TRANSIENT
AT CONSTANT-CURRENT LOAD
END OF CHARGE DETECTION
100
90
80
70
60
50
40
30
20
10
0
4.4
4.2
4.0
3.8
3.6
3.4
3.2
3.0
2.8
2.6
2.4
8
7
4.7
4.5
4.3
4.1
3.9
3.7
3.5
3.3
3.1
2.9
2.7
VALID END-OF-CHARGE
DETECTION EVENT
FULLCAP
V
RISES WITH
CELL
6
TEMPERATURE DURING
CONSTANT LOAD
REMCAP
REP
V
CELL
5
4
NEAR-FULL FALSE
CHARGE TERMINATION
EVENTS REJECTED
3
EMPTY VOLTAGE
2
SOC
AV
1
SOC
REP
FUEL GAUGE CHANGES
TRAJECTORY AFTER
0
TEMPERATURE CHANGE
-1
-2
TEMPERATURE
CURRENT
6
0
1
2
3
0
2
4
8
TIME (Hr)
TIME (Hr)
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5
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
