ICL7660S
Data Sheet
April 1999
File Number 3179.2
Super Voltage Converter
Features
The ICL7660S Super Voltage Converter is a monolithic
CMOS voltage conversion IC that guarantees significant
performance advantages over other similar devices. It is a
direct replacement for the industry standard ICL7660 offering
an extended operating supply voltage range up to 12V, with
lower supply current. No external diode is needed for the
ICL7660S. In addition, a Frequency Boost pin has been
incorporated to enable the user to achieve lower output
impedance despite using smaller capacitors. All
• Guaranteed Lower Max Supply Current for All
Temperature Ranges
• Wide Operating Voltage Range 1.5V to 12V
• 100% Tested at 3V
• No External Diode Over Full Temperature and Voltage
Range
• Boost Pin (Pin 1) for Higher Switching Frequency
• Guaranteed Minimum Power Efficiency of 96%
improvements are highlighted in the Electrical Specifications
section. Critical parameters are guaranteed over the entire
commercial, industrial and military temperature ranges.
• Improved Minimum Open Circuit Voltage Conversion
Efficiency of 99%
• Improved SCR Latchup Protection
The ICL7660S performs supply voltage conversion from
positive to negative for an input range of 1.5V to 12V,
resulting in complementary output voltages of -1.5V to -12V.
Only 2 non-critical external capacitors are needed for the
charge pump and charge reservoir functions. The ICL7660S
can be connected to function as a voltage doubler and will
generate up to 22.8V with a 12V input. It can also be used as
a voltage multiplier or voltage divider.
• Simple Conversion of +5V Logic Supply to ±5V Supplies
• Simple Voltage Multiplication V
OUT
= (-)nV
IN
• Easy to Use - Requires Only 2 External Non-Critical
Passive Components
• Improved Direct Replacement for Industry Standard
ICL7660 and Other Second Source Devices
The chip contains a series DC power supply regulator, RC
oscillator, voltage level translator, and four output power
MOS switches. 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 over-driven by an external clock.
Applications
• Simple Conversion of +5V to ±5V Supplies
• Voltage Multiplication V
OUT
= ±nV
IN
• Negative Supplies for Data Acquisition Systems and
Instrumentation
• RS232 Power Supplies
The “LV” terminal may be tied to GND to bypass the internal
series regulator and improve low voltage (LV) operation. At
medium to high voltages (3.5V to 12V), the LV pin is left
floating to prevent device latchup.
• Supply Splitter, V
= ±V /2
S
OUT
Pinouts
ICL7660S (PDIP, SOIC)
TOP VIEW
Ordering Information
TEMP.
BOOST
CAP+
GND
1
2
3
4
8
7
6
5
V+
PART
NUMBER
RANGE
o
OSC
LV
( C)
PACKAGE
8 Ld P SOIC (N)
8 Ld PDIP
PKG. NO.
M8.15
E8.3
ICL7660SCBA
ICL7660SCPA
ICL7660SIBA
ICL7660SIPA
0 to 70
0 to 70
CAP-
V
OUT
-40 to 85 8 Ld P SOIC (N)
-40 to 85 8 Ld PDIP
M8.15
E8.3
ICL7660S (CAN)
TOP VIEW
V+ (AND CASE)
ICL7660SMTV
(Note)
-55 to 125 8 Pin Metal Can
T8.C
8
BOOST
OSC
1
3
7
5
NOTE: Add /883B to part number if 883B processing is required.
LV
6
2
CAP+
GND
V
OUT
4
CAP-
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
http://www.intersil.com or 407-727-9207 | Copyright © Intersil Corporation 1999
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