Data Sheet

ICL7660S, ICL7660A
FN3179 Rev 7.00 Page 6 of 13
January 23, 2013
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, “ICL7660S Test Circuit” on page 7) and Figure 13 “ICL7660A Test Circuit” on page 7 (Continued)
1 10 100 1k
OSCILLATOR FREQUENCY f
OSC
(kHz)
10
9
8
7
6
5
4
3
2
1
0
C
OSC
(pF)
V+ = 5V
T
A
= +25°C
OSCILLATOR FREQUENCY f
OSC
(kHz)
20
18
16
14
12
10
8
-55 -25 0 25 50 75 100 125
TEMPERATURE (°C)
V+ = 10V
V+ = 5V
OUTPUT VOLTAGE (V)
1
0
-1
-2
-3
-4
-5
010203040
LOAD CURRENT (mA)
V+ = 5V
T
A
= +25°C
POWER CONVERSION EFFICIENCY (%)
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)
0102030 40 5060
V+ = 5V
T
A
= +25°C
SUPPLY CURRENT (mA)
OUTPUT VOLTAGE (V)
2
1
0
-1
-2
012 345 6789
LOAD CURRENT (mA)
T
A
= +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
T
A
= +25°C
POWER CONVERSION
EFFICIENCY (%)
SUPPLY CURRENT (mA) (NOTE 12)