ICL7660EPA 查看數據表（PDF） - Maxim Integrated
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ICL7660EPA Datasheet PDF : 14 Pages
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MAX1044/ICL7660
Switched-Capacitor Voltage Converters
+
1
8
2
MAX1044
7
C1
ICL7660
3
6
4
5
1
+
1
8
2
MAX1044
7
C1
ICL7660
3
6
4
5
n
V+
VOUT = -(V+)
C2
Figure 13. Paralleling MAX1044/ICL7660 to Reduce Output
Resistance
10µF
a)
+
1
2
MAX1044
ICL7660
3
4
V+
10kΩ REQUIRED FOR TTL
8
1N4148
V+ CMOS or
TTL GATE
7
6
5
VOUT = -(V+)
10µF
MAX1044
ICL7660
7
b)
V+
74HC03
OPEN-DRAIN OR
74LS03
OPEN-COLLECTOR
NAND GATES
MAX1044
ICL7660
7
c)
V+
OUTPUT
ENABLE
74HC126 OR
74LS126
TRI-STATE BUFFER
Figure 14a-14c. Shutdown Schemes for MAX1044/ICL7660
Paralleling Devices
Paralleling multiple MAX1044/ICL7660s reduces output
resistance and increases current capability. As illustrated
in Figure 13, each device requires its own pump capacitor
C1, but the reservoir capacitor C2 serves all devices. The
equation for calculating output resistance is:
R OUT
=
R OUT (of MAX1044 or ICL7660)
n (number of devices)
Shutdown Schemes
Figures 14a–14c illustrate three ways of adding shutdown
capability to the MAX1044/ICL7660. When using these
circuits, be aware that the additional capacitive loading
on the OSC pin will reduce the oscillator frequency. The
first circuit has the least loading on the OSC pin and has
the added advantage of controlling shutdown with a high
or low logic level, depending on the orientation of the
switching diode.
Ordering Information
PART
TEMP. RANGE PIN-PACKAGE
MAX1044CPA
0°C to +70°C
8 Plastic DIP
MAX1044CSA
0°C to +70°C
8 SO
MAX1044C/D*
0°C to +70°C
Dice*
MAX1044EPA
-40°C to +85°C 8 Plastic DIP
MAX1044ESA
-40°C to +85°C 8 SO
MAX1044MJA
-55°C to +125°C 8 CERDIP**
ICL7660CPA
0°C to +70°C
8 Plastic DIP
ICL7660CSA
0°C to +70°C
8 SO
ICL7660CUA
0°C to +70°C
8 μMAX
ICL7660C/D
0°C to +70°C
Dice*
ICL7660EPA
-40°C to +85°C 8 Plastic DIP
ICL7660ESA
-40°C to +85°C 8 SO
ICL7660AMJA† -55°C to +125°C 8 CERDIP**
ICL7660AMTV† -55°C to +125°C 8 TO-99**
*Contact factory for dice specifications. Dice are not tested
**Contact factory for availability.
†The Maxim ICL7660 meets or exceeds all “A” and “S”
specifications.
www.maximintegrated.com
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