3-38

Oscillator Impedance

V+ = 2V

-

1

-

M

Ω

V+ = 5V

-

100

-

k

Ω

NOTES:

4. In the test circuit, there is no external capacitor applied to pin 7. However, when the device is plugged into a test socket, there is usually a very

small but finite stray capacitance present, of the order of 5pF.

5. The Intersil ICL7660S can operate without an external diode over the full temperature and voltage range. This device will function in existing

designs which incorporate an external diode with no degradation in overall circuit performance.

6. All significant improvements over the industry standard ICL7660 are highlighted.

Electrical Specifications

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX

UNITS

FIGURE 1. OPERATING VOLTAGE AS A

FUNCTION OF TEMPERATURE

FIGURE 2. OUTPUT SOURCE RESISTANCE AS A

FUNCTION OF SUPPLY VOLTAGE

FIGURE 3. OUTPUT SOURCE RESISTANCE AS A

FUNCTION OF TEMPERATURE

FIGURE 4. POWER CONVERSION EFFICIENCY AS A

FUNCTION OF OSCILLATOR FREQUENCY

-55

-25

0

25

50

100

125

12

10

8

6

4

2

0

SUPPLY VOLTAGE RANGE

(NO DIODE REQUIRED)

250

200

150

100

50

0

02

4

6

8

10

12

SUPPLY VOLTAGE (V)

350

300

250

200

150

100

50

0

-50

-25

0

25

50

75

100

125

V+ = 12V

V+ = 5V

V+ = 5V

V+ = 2V

98

96

94

92

90

88

86

84

82

80

100

1k

10k

50k

V+ = 5V

ICL7660S