ICL7660SIBAZ Datasheet, PDF (4/12 Pages) Intersil Corporation – Simple Conversion of +5V Logic Supply to ±5V Supplies

ICL7660, ICL7660A
Electrical Specifications ICL7660 and ICL7660A, V+ = 5V, T_A = 25°C, C_OSC = 0, Test Circuit Figure 11
Unless Otherwise Specified (Continued)
ICL7660
ICL7660A
PARAMETER
SYMBOL
TEST CONDITIONS
MIN TYP MAX MIN TYP MAX UNITS
Voltage Conversion Efficiency
V_OUTEFF V+ = 3V, R_L = ∞
-
-
- 99 -
-
%
T_MIN < T_A < T_MAX
-
-
- 99 -
-
%
Power Efficiency
P_EFF V+ = 3V, R_L = 5kΩ
-
-
- 96 -
-
%
T_MIN < T_A < T_MAX
-
-
- 95 -
-
%
NOTES:
2. Connecting any input terminal to voltages greater than V+ or less than GND may cause destructive latchup. It is recommended that no inputs
from sources operating from external supplies be applied prior to “power up” of the ICL7660, ICL7660A.
3. Derate linearly above 50°C by 5.5mW/°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 ICL7660A 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.
Functional Block Diagram
RC
OSCILLATOR
÷2
VOLTAGE
LEVEL
TRANSLATOR
V+
CAP+
CAP-
OSC
LV
V_OUT
VOLTAGE
REGULATOR
LOGIC
NETWORK
Typical Performance Curves (Test Circuit of Figure 11)
10
8
SUPPLY VOLTAGE RANGE
(NO DIODE REQUIRED)
6
4
2
0
-55
-25
0
25
50
TEMPERATURE (°C)
100
125
FIGURE 1. OPERATING VOLTAGE AS A FUNCTION OF
TEMPERATURE
10K
1000
T_A = 25°C
100
10
0
1
2
3
4
5
6
7
8
SUPPLY VOLTAGE (V+)
FIGURE 2. OUTPUT SOURCE RESISTANCE AS A FUNCTION
OF SUPPLY VOLTAGE
4
FN3072.7
October 10, 2005