ICL7660S, ICL7660A: Super Voltage Converters

ICL7660S, ICL7660A: Super Voltage Converters

The ICL7660S and ICL7660A Super Voltage Converters are monolithic CMOS voltage conversion ICs that guarantee significant performance advantages over other similar devices. They are direct replacements for the industry standard ICL7660 offering an extended operating supply voltage range up to 12V, with lower supply current. 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 Specifications” section on page 3. Critical parameters are guaranteed over the entire commercial and industrial temperature ranges.

The ICL7660S and ICL7660A perform supply voltage conversions from positive to negative for an input range of 1.5V to 12V, resulting in complementary output voltages of -1.5V to -12V. Only two non-critical external capacitors are needed, for the charge pump and charge reservoir functions. The ICL7660S and ICL7660A can be connected to function as a voltage doubler and will generate up to 22.8V with a 12V input. They can also be used as a voltage multipliers or voltage dividers.

Each 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.

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.

In some applications, an external Schottky diode from VOUT to CAP- is needed to guarantee latchup free operation

 

Features

  • Guaranteed Lower Max Supply Current for All Temperature Ranges
  • Wide Operating Voltage Range: 1.5V to 12V
  • 100% Tested at 3V
  • Boost Pin(Pin1) for Higher Switching Frequency
  • Guaranteed Minimum Power Efficiency of 96%
  • Improved Minimum Open Circuit Voltage Conversion Efficiency of 99%
  • Improved SCR Latch up Protection
  • Simple Conversion of +5V Logic Supply to ±5V Supplies
  • Simple Voltage Multiplication VOUT=(-)nVIN
  • Easy to Use; Requires Only Two ExternalNon-Critical Passive Components
  • Improved Direct Replacement for Industry Standard ICL7660 and Other Second Source Devices
  • Pb-FreeAvailable(RoHSCompliant)

Applications

  • Simple Conversion of +5V to ±5V Supplies
  • Voltage Multiplication VOUT=±nVIN
  • Negative Supplies for Data Acquisition Systems and Instrumentation
  • RS232 Power Supplies
  • Supply Splitter, VOUT = ±VS

 

Image Part # Manufacturer Description Stock Price Buy
637P15935C3T
CTS Electronic Components
XTAL OSC XO 159.3750MHZ LVPECL
73782
Min : 1000
-
Detail
515BCA125M000BAG
Silicon Labs
XTAL OSC VCXO 125.0000MHZ LVDS
69340
Min : 50
-
Detail
TTEAALSANF-20.000000
Taitien
XTAL OSC VCTCXO 20.0000MHZ SNWV
52589
Min : 100
-
Detail
SIT5156ACCF325JS
SiTime
OSC PROGRAMMABLE DCTCXO
56210
Min : 1
-
Detail
510BAA156M250AAGR
Silicon Labs
XTAL OSC XO 156.2500MHZ LVDS SMD
63549
Min : 1000
-
Detail
SIT5157AC-F130IE
SiTime
OSC DCTCXO PROGRAMMABLE
71836
Min : 1
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Detail
SIT9002AI-08N33EG
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MEMS OSC PROG XO LVPECL CS 3.3V
76115
Min : 1
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Detail
SIT5157AC-F125IQ
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OSC DCTCXO PROGRAMMABLE
71716
Min : 1
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Detail
SIT9120AC-2B3-25S166.666600E
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MEMS OSC XO 166.6666MHZ LVDS SMD
70213
Min : 1
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Detail
SIT5156AICF725JT
SiTime
OSC PROGRAMMABLE DCTCXO
76654
Min : 1
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Detail
TTEAALSANF-26.000000
Taitien
XTAL OSC VCTCXO 26.0000MHZ SNWV
50971
Min : 100
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Detail
SIT5156AICF725JQ
SiTime
OSC PROGRAMMABLE DCTCXO
58412
Min : 1
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Detail
510FCA20M0000AAG
Silicon Labs
XTAL OSC XO 20.0000MHZ LVDS SMD
61393
Min : 50
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Detail
SIT8919AAU2-30S
SiTime
MEMS OSC PROG XO LVCMOS 3V 20PPM
59739
Min : 1
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Detail
MTSW-105-22-T-D-023
Samtec Inc
CONN HEADER VERT 10POS 2.54MM
76065
Min : 1
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Detail
653E10003C2T
CTS Electronic Components
XTAL OSC XO 100.0000MHZ LVPECL
54159
Min : 1000
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Detail
AX7DAF4-933.1200
Abracon Corporation
XTAL OSC XO 933.1200MHZ LVDS SMD
70623
Min : 50
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