ICL7660S
Electrical Specifications
PARAMETER
Oscillator Impedance
V+ = 5V, T
A
= 25
o
C, OSC = Free running, Test Circuit Figure 12, Unless Otherwise Specified
(Continued)
SYMBOL
Z
OSC
V+ = 2V
V+ = 5V
NOTES:
3. Derate linearly above 50
o
C by 5.5mW/
o
C
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.
TEST CONDITIONS
MIN
-
-
TYP
1
100
MAX
-
-
UNITS
MΩ
kΩ
Typical Performance Curves
12
10
SUPPLY VOLTAGE (V)
8
6
4
2
0
-55
-25
0
25
(Test Circuit Figure 12)
250
OUTPUT SOURCE RESISTANCE (Ω)
T
A
= 125
o
C
200
T
A
= 25
o
C
150
T
A
= -55
o
C
100
SUPPLY VOLTAGE RANGE
(NO DIODE REQUIRED)
50
0
50
100
125
0
2
TEMPERATURE (
o
C)
4
6
8
SUPPLY VOLTAGE (V)
10
12
FIGURE 1. OPERATING VOLTAGE AS A
FUNCTION OF TEMPERATURE
FIGURE 2. OUTPUT SOURCE RESISTANCE AS A
FUNCTION OF SUPPLY VOLTAGE
350
POWER CONVERSION EFFICIENCY (%)
OUTPUT SOURCE RESISTANCE (Ω)
300
250
I
OUT
= 3mA,
200
150
100
50
0
-50
-25
0
25
I
OUT
= 20mA,
V+ = 5V
V+ = 2V
98
96
94
92
90
88
86
84
82
80
100
V+ = 5V
T
A
= 25
o
C
I
OUT
= 1mA
I
OUT
= 20mA,
V+ = 5V
I
OUT
= 20mA,
V+ = 12V
50
75
100
125
1k
10k
50k
TEMPERATURE (
o
C)
OSC FREQUENCY F
OSC
(Hz)
FIGURE 3. OUTPUT SOURCE RESISTANCE AS A
FUNCTION OF TEMPERATURE
FIGURE 4. POWER CONVERSION EFFICIENCY AS A
FUNCTION OF OSCILLATOR FREQUENCY
3-38
INTERSIL [ INTERSIL CORPORATION ]
