ICL7660, ICL7660A
Typical Performance Curves (Test Circuit of Figure 11) (Continued)
350
300
250
200
150
100
100
98
96
94
92
90
88
86
84
82
80
T
= 25°C
I
= 1mA
A
OUT
I
= 1mA
OUT
I
= 15mA
OUT
V+ = +2V
50
0
V+ = 5V
V+ = +5V
100
1K
OSC. FREQUENCY f
10K
-55
-25
0
25
50
75
100
125
(Hz)
OSC
TEMPERATURE (°C)
FIGURE 3. OUTPUT SOURCE RESISTANCE AS A FUNCTION
OF TEMPERATURE
FIGURE 4. POWER CONVERSION EFFICIENCY AS A
FUNCTION OF OSC. FREQUENCY
10K
20
18
16
14
12
10
8
1K
100
V+ = 5V
A
V+ = +5V
T
= 25°C
6
-50
10
1.0
-25
0
25
50
75
100
125
10
100
(pF)
1000
10K
C
TEMPERATURE (°C)
OSC
FIGURE 5. FREQUENCY OF OSCILLATION AS A FUNCTION
OF EXTERNAL OSC. CAPACITANCE
FIGURE 6. UNLOADED OSCILLATOR FREQUENCY AS A
FUNCTION OF TEMPERATURE
5
100
90
80
70
60
50
40
30
20
10
0
100
90
80
70
60
50
40
30
20
10
0
T
= 25°C
A
4
3
+
P
EFF
V+ = +5V
I
2
1
0
-1
-2
-3
-4
-5
T
= 25°C
= +5V
A
+
V
SLOPE 55Ω
20 30
LOAD CURRENT I (mA)
0
10
20
30
40
50
60
0
10
40
50
L
60
70
80
LOAD CURRENT I (mA)
L
FIGURE 7. OUTPUT VOLTAGE AS A FUNCTION OF OUTPUT
CURRENT
FIGURE 8. SUPPLY CURRENT AND POWER CONVERSION
EFFICIENCY AS A FUNCTION OF LOAD
CURRENT
FN3072.7
5
October 10, 2005
INTERSIL [ Intersil ]
