Compact, Low-Cost 1S/2S Fuel Gauges

4

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Typical Operating Characteristics

QUIESCENT CURRENT vs. SUPPLY VOLTAGE

3

24

5

1

20

40

60

80

100

0

0

°C

°C

°C

SIMPLE C/2 RATE CYCLES

SOC ACCURACY

MAX17040 toc02

TIME (hr)

12

10

68

4

2

10

20

30

40

50

60

70

80

90

100

0

-8

-6

-4

-2

0

2

4

6

8

10

-10

0

ERROR (%)

MAX17040/

MAX17041 SOC:

DASHED LINE

REFERENCE SOC:

SOLID LINE

C/2 RATE ZIGZAG PATTERN

SOC ACCURACY

MAX17040 toc05

TIME (hr)

12

816

22

20

4

10

20

30

40

50

60

70

80

90

100

0

-8

-6

-4

-2

0

2

4

6

8

10

-10

0

ERROR (%)

MAX17040/MAX17041 SOC:

DASHED LINE

REFERENCE SOC:

SOLID LINE

SIMPLE C/4 RATE CYCLES

SOC ACCURACY

MAX17040 toc03

TIME (hr)

12

10

68

18

16

22

20

14

4

2

10

20

30

40

50

60

70

80

90

100

0

-8

-6

-4

-2

0

2

4

6

8

10

-10

0

ERROR (%)

MAX17040/

MAX17041 SOC:

DASHED LINE

REFERENCE SOC:

SOLID LINE

MAX17040 VOLTAGE ADC ERROR

vs. TEMPERATURE

TEMPERATURE (

°C)

35

10

60

85

-15

-15

-10

-5

0

5

10

15

20

-20

-40