intersil ICL7660S DATA SHEET

®

www.BDTIC.com/Intersil

ICL7660S

Data Sheet March 6, 2008

Super Voltage Converter

The ICL7660S Super Volt ag e 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 of fering
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
improvements are highlighted in the “Electrical S pecifications”
section on page 3. Critical parameters are guaranteed over

the entire commercial, industrial and military temperature
ranges.

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.

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.

FN3179.5

Features

• 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%

• Improved Minimum Open Circuit Voltage Conversion
Efficiency of 99%

• Improved SCR Latchup Protection

• 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

• Pb-Free Available (RoHS Compliant)

Applications

• Simple Conversion of +5V to ±5V Supplies

• Voltage Multiplication V

• Negative Supplies for Data Acquisition Systems and
Instrumentation

• RS232 Power Supplies

• Supply Splitter, V

OUT

= ±nV

OUT

= ±VS/2

IN

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.

Pinout

ICL7660S

(8 LD PDIP, SOIC)

TOP VIEW

BOOST

CAP+

GND

CAP-

1
2
3
4

1

8

V+

7

OSC

6

LV

5

V

OUT

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

1-888-INTERSIL or1-888-468-3774

| Intersil (and design) is a registered trademark of Intersil Americas Inc.

Copyright © Intersil Americas Inc. 2004, 2005, 2008. All Rights Reserved

All other trademarks mentioned are the property of their respective owners.

ICL7660S

www.BDTIC.com/Intersil

Ordering Information

TEMP. RANGE

PART NUMBER PART MARKING

ICL7660SCBA 7660 SCBA 0
ICL7660SCBA-T

(Note 3)
ICL7660SCBAZ

(Note 1)
ICL7660SCBAZ-T

(Notes 1, 3)
ICL7660SCPA 7660S CPA 0
ICL7660SCPAZ

(Note 1)
ICL7660SIBA 7660 SIBA -40
ICL7660SIBAT

(Note 3)
ICL7660SIBAZ

(Note 1)
ICL7660SIBAZT

(Notes 1, 3)
ICL7660SIPA 7660 SIPA -40
ICL7660SIPAZ

(Note 1)
*Pb-free PDIPs can be used for through hole wave solder processing only. They are not intended for use in Reflow solder processing applications.

NOTES:

1. These Intersil Pb-free plastic packaged products employ special Pb-free material sets; molding compounds/die attach materials and 100%
matte tin plate PLUS ANNEAL - e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering
operations. Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of
IPC/JEDEC J STD-020.

2. Add /883B to part number if 883B processing is required.

3. Please refer to TB347 for details on reel specifications.

7660 SCBA 0

7660 SCBAZ 0

7660 SCBAZ 0

7660S CPAZ 0

7660 SIBA -40

7660 SIBAZ -40

7660 SIBAZ -40

7660S IPAZ -40

(°C) PACKAGE PKG. DWG. #

to +70 8 Ld SOIC M8.15
to +70 8 Ld SOIC T ape and Reel M8.15

to +70 8 Ld SOIC

(Pb-free)

to +70 8 Ld SOIC T ape and Reel

to +70 8 Ld PDIP E8.3
to +70 8 Ld PDIP*

to +85 8 Ld SOIC M8.15
to +85 8 Ld SOIC T ape and Reel M8.15

to +85 8 Ld SOIC

to +85 8 Ld SOIC T ape and Reel

to +85 8 Ld PDIP E8.3
to +85 8 Ld PDIP*

(Pb-free)

(Pb-free)

(Pb-free)

(Pb-free)

(Pb-free)

M8.15

M8.15

E8.3

M8.15

M8.15

E8.3

2

FN3179.5

March 6, 2008

ICL7660S

www.BDTIC.com/Intersil

Absolute Maximum Ratings Thermal Information

Supply Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +13.0V

LV and OSC Input Voltage (Note 4)

V+ < 5.5V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to V+ + 0.3V

V+ > 5.5V . . . . . . . . . . . . . . . . . . . . . . . . . . .V+ -5.5V to V+ +0.3V

Current into LV (Note 4)

V+ > 3.5V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20μA

Output Short Duration

V

Storage Temperature Range . . . . . . . . . . . . . . . . . .-65°C to +150°C

≤ 5.5V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Continuous

SUPPLY

Thermal Resistance (Typical, Note 5) θ

8 Ld PDIP* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110

8 Ld Plastic SOIC. . . . . . . . . . . . . . . . . . . . . . . . . . . 160

Pb-free reflow profile . . . . . . . . . . . . . . . . . . . . . . . . . .see link below

http://www.intersil.com/pbfree/Pb-FreeReflow.asp

*Pb-free PDIPs can be used for through hole wave solder
processing only. They are not intended for use in Reflow solder
processing. applications.

Operating Conditions

Temperature Range

ICL7660SI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40°C to +85°C

ICL7660SC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to +70°C

CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product reliability and
result in failures not covered by warranty.

NOTES:

4. Connecting any 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 ICL7660S.

is measured with the component mounted on an evaluation PC board in free air.

5. θ

JA

(°C/W)

JA

Electrical Specifications V+ = 5V, T

PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNITS

Supply Current (Note 8) I+ R

Supply Voltage Range - High
(Note 9)

Supply Voltage Range - Low V+
Output Source Resistance R

Oscillator Frequency (Note 7) f

Power Efficiency P

Voltage Conversion Efficiency V

OUT

= +25°C, OSC = Free running, Test Circuit Figure 12, Unless Otherwise Specified.

A

V+

H

L

OUTIOUT

OSC

EFF

EFF RL = ∞ 99 99.9 - %

= ∞, +25°C - 80 160 µA

L

0°C < T

-40°C < T

-55°C < T
RL = 10k, LV Open, T

RL = 10k, LV to GND, T

I
I
I
I

0°C < T
I

-40°C < T
I

-55°C < T
C
C
RL = 5kΩ 96 98 - %
T

< +70°C - - 180 µA

A

< +85°C - - 180 µA

A

< +125°C - - 200 µA

A

< TA < T

MIN

MIN

= 20mA - 60 100 Ω
= 20mA, 0°C < TA < +70°C - - 120 Ω

OUT

= 20mA, -25°C < TA < +85°C - - 120 Ω

OUT

= 20mA, -55°C < TA < +125°C - - 150 Ω

OUT

= 3mA, V+ = 2V, LV = GND,

OUT

< +70°C

A

= 3mA, V+ = 2V, LV = GND,

OUT

OUT

OSC
OSC

MIN

< +85°C

A

= 3mA, V+ = 2V, LV = GND,

< +125°C

A

= 0, Pin 1 Open or GND 5 10 - kHz
= 0, Pin 1 = V+ - 35 - kHz

< TA < T

= 5kΩ 95 97 - -

MAX RL

< TA < T

MAX

MAX

3.0 - 12 V

1.5 - 3.5 V

- - 250 Ω

- - 300 Ω

- - 400 Ω

3

FN3179.5

March 6, 2008

ICL7660S

www.BDTIC.com/Intersil

Electrical Specifications V+ = 5V, T

= +25°C, OSC = Free running, Test Circuit Figure 12, Unless Otherwise Specified. (Continued)

A

PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNITS

Oscillator Impedance Z

OSC

V+ = 2V - 1 - MΩ
V+ = 5V - 100 - kΩ

NOTES:

6. Derate linearly above +50°C by 5.5mW/°C

7. 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.

8. 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.

9. All significant improvements over the industry standard ICL7660 are highlighted.

Typical Performance Curves (Test Circuit Figure 12)

12

10

8

6

4

SUPPLY VOLTAGE (V)

2

0

-55 -25 0 25 50 100 125

SUPPLY VOLTAGE RANGE

(NO DIODE REQUIRED)

TEMPERATURE (°C)

FIGURE 1. OPERATING VOLT AGE AS A

FUNCTION OF TEMPERATURE

250

TA = +125°C

200

TA = +25°C

150

TA = -55°C

100

50

OUTPUT SOURCE RESISTANCE (W)

0

02 4681012

SUPPLY VOLTAGE (V)

FIGURE 2. OUTPUT SOURCE RESISTANCE AS A

FUNCTION OF SUPPLY VOLTAGE

350

300

250

I

200

150

100

50

OUTPUT SOURCE RESISTANCE (Ω)

0

-50 -25 0 25 50 75 100 125

= 20mA,

OUT

V+ = 5V

TEMPERATURE (°C)

I

OUT

V+ = 2V

I

= 20mA,

OUT

V+ = 5V

I

= 20mA,

OUT

V+ = 12V

= 3mA,

FIGURE 3. OUTPUT SOURCE RESISTANCE AS A

FUNCTION OF TEMPERATURE

4

98
96

V+ = 5V
T

= +25°C

A

94

I

= 1mA

OUT

92
90
88
86
84
82

POWER CONVERSION EFFICIENCY (%)

80

100 1k 10k 50k

OSC FREQUENCY f

OSC

(Hz)

FIGURE 4. POWER CONVERSION EFFICIENCY AS A

FUNCTION OF OSCILLATOR FREQUENCY

March 6, 2008

FN3179.5