ICL7660, ICL7660A
Data Sheet
April 1999
File Number
3072.4
CMOS Voltage Converters
The Intersil ICL7660 and ICL7660A are monolithic CMOS
power supply circuits which offer unique performance
advantages over previously available devices. The ICL7660
performs supply voltage conversions from positive to
negative for an input range of +1.5V to +10.0V resulting in
complementary output voltages of -1.5V to -10.0V and the
ICL7660A does the same conversions with an input range of
+1.5V to +12.0V resulting in complementary output voltages
of -1.5V to -12.0V. Only 2 noncritical external capacitors are
needed for the charge pump and charge reservoir functions.
The ICL7660 and ICL7660A can also be connected to
function as voltage doublers and will generate output
voltages up to +18.6V with a +10V input.
Contained on the chip are a series DC supply regulator, RC
oscillator, voltage level translator, and four output power
MOS switches. A unique logic element senses the most
negative voltage in the device and ensures that the output N-
Channel switch source-substrate junctions are not forward
biased. This assures latchup free operation.
The oscillator, when unloaded, oscillates at a nominal
frequency of 10kHz for an input supply voltage of 5.0V. This
frequency can be lowered by the addition of an external
capacitor to the “OSC” terminal, or the oscillator may be
overdriven by an external clock.
The “LV” terminal may be tied to GROUND to bypass the
internal series regulator and improve low voltage (LV)
operation. At medium to high voltages (+3.5V to +10.0V for
the ICL7660 and +3.5V to +12.0V for the ICL7660A), the LV
pin is left floating to prevent device latchup.
Features
• Simple Conversion of +5V Logic Supply to
±5V
Supplies
• Simple Voltage Multiplication (V
OUT
= (-) nV
IN
)
• Typical Open Circuit Voltage Conversion Efficiency 99.9%
• Typical Power Efficiency 98%
• Wide Operating Voltage Range
- ICL7660 . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5V to 10.0V
- ICL7660A . . . . . . . . . . . . . . . . . . . . . . . . . 1.5V to 12.0V
• ICL7660A 100% Tested at 3V
• Easy to Use - Requires Only 2 External Non-Critical
Passive Components
• No External Diode Over Full Temp. and Voltage Range
Applications
• On Board Negative Supply for Dynamic RAMs
• Localized
µProcessor
(8080 Type) Negative Supplies
• Inexpensive Negative Supplies
• Data Acquisition Systems
Pinouts
ICL7660, ICL7660A (PDIP, SOIC)
TOP VIEW
NC
CAP+
GND
CAP-
1
2
3
4
8
7
6
5
V+
OSC
LV
V
OUT
Ordering Information
PART NO.
ICL7660CBA
ICL7660CBA-T
ICL7660CPA
ICL7660MTV†
ICL7660ACBA
ICL7660ACBA-T
ICL7660ACPA
ICL7660AIBA
ICL7660AIBA-T
ICL7660AIPA
TEMP.
RANGE (
o
C)
0 to 70
0 to 70
0 to 70
0 to 70
0 to 70
0 to 70
0 to 70
-40 to 85
-40 to 85
-40 to 85
PACKAGE
8 Ld SOIC (N)
8 Ld SOIC (N)
Tape and Reel
8 Ld PDIP
8 Pin Metal Can
8 Ld SOIC (N)
8 Ld SOIC (N)
Tape and Reel
8 Ld PDIP
8 Ld SOIC (N)
8 Ld SOIC (N)
Tape and Reel
8 Ld PDIP
PKG.
NO.
M8.15
M8.15
E8.3
T8.C
M8.15
M8.15
ICL7660 (METAL CAN)
TOP VIEW
V+ (AND CASE)
8
NC
1
7
OSC
CAP+
2
6
LV
GND
3
4
CAP-
5
V
OUT
E8.3
M8.15
M8.15
E8.3
†
Add /883B to part number if 883B processing is required.
3-26
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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Copyright
©
Intersil Corporation 1999
INTERSIL [ INTERSIL CORPORATION ]
