*Sample accuracy with custom configuration data programmed into the IC.

QUIESCENT CURRENT vs. SUPPLY VOLTAGE

3

2

4

5

1

20

40

60

80

100

0

0

SIMPLE C/4 RATE CYCLES*

SOC ACCURACY

MAX17040 toc03

TIME (hr)

12

10

6 8

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

SIMPLE C/2 RATE CYCLES*

SOC ACCURACY

MAX17040 toc02

TIME (hr)

12

10

6

8

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

C/2 RATE ZIGZAG PATTERN*

SOC ACCURACY

MAX17040 toc05

TIME (hr)

12

8

16

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

MAX17040/MAX17041

1-Cell/2-Cell Fuel Gauge with ModelGauge

Maxim Integrated │ 4

www.maximintegrated.com

Typical Operating Characteristics