ICL7660S, ICL7660A

FN3179 Rev 7.01

Page 6 of 14

Feb 10, 2020

FIGURE 5. FREQUENCY OF OSCILLATION AS A FUNCTION

OF EXTERNAL OSCILLATOR CAPACITANCE

FIGURE 6. UNLOADED OSCILLATOR FREQUENCY AS A

FUNCTION OF TEMPERATURE

FIGURE 7. OUTPUT VOLTAGE AS A FUNCTION

OF OUTPUT CURRENT

FIGURE 8. SUPPLY CURRENT AND POWER CONVERSION

EFFICIENCY AS A FUNCTION OF LOAD

CURRENT

FIGURE 9. OUTPUT VOLTAGE AS A FUNCTION OF OUTPUT

CURRENT

FIGURE 10. SUPPLY CURRENT AND POWER CONVERSION

EFFICIENCY AS A FUNCTION OF LOAD CURRENT

Typical Performance Curves

See Figure 12 on page 7, “ICL7660S Test Circuit”) and Figure 13 on page 7 “ICL7660A Test Circuit” (Continued)

1

10

100

1k

10

9

8

7

6

5

4

3

2

1

0

COSC (pF)

V+ = 5V

TA = +25°C

20

18

16

14

12

10

8

-55

-25

0

25

50

75

100

125

TEMPERATURE (°C)

V+ = 10V

V+ = 5V

1

0

-1

-2

-3

-4

-5

010

20

30

40

LOAD CURRENT (mA)

V+ = 5V

TA = +25°C

100

90

80

70

60

50

40

30

20

10

0

100

90

80

70

60

50

40

30

20

10

0

LOAD CURRENT (mA)

010

20

30

40

50

60

V+ = 5V

TA = +25°C

2

1

0

-1

-2

0

1

2

3

45

67

8

9

LOAD CURRENT (mA)

TA = +25°C

V+ = 2V

100

90

80

70

60

50

40

30

20

10

0

16

14

12

10

8

6

4

2

0

0

1.5

3.0

4.5

6.0

7.5

9.0

LOAD CURRENT (mA)

V+ = 2V

TA = +25°C