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 NChannel 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.


  • Simple Conversion of +5V Logic Supply to ±5V Supplies
  • Simple Voltage Multiplication (VOUT = (-) nVIN)
  • 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
  • Pb-Free Plus Anneal Available (RoHS Compliant)


  • On Board Negative Supply for Dynamic RAMs
  • Localized µProcessor (8080 Type) Negative Supplies
  • Inexpensive Negative Supplies
  • Data Acquisition Systems

Product Options

Part Number Part Status Pkg. Type Carrier Type MOQ Buy Sample
Active SOICN Tube 1960
Active SOICN Tube 1960
Active SOICN Reel 2500
Active SOICN Reel 2500
Active PDIP Tube 1000

Documentation & Downloads

Title Other Languages Type Format File Size Date
Datasheets & Errata
ICL7660 Datasheet Datasheet PDF 555 KB
ICL7660S, ICL7660A Datasheet Datasheet PDF 681 KB
Application Notes & White Papers
AN1684: Nonideality of Ground Application Note PDF 397 KB
AN1681: Grounding Techniques Application Note PDF 509 KB
AN051: Principles and Applications of the ICL7660 CMOS Voltage Converter Application Note PDF 587 KB
AN9601: Using the HI7190 with Single +5V Supply Application Note PDF 262 KB
PCN12085 - 8l, 14l, 16l SOIC w/ Gold Bond Wire @ ATP as Alternate Assembly Site Product Change Notice PDF 152 KB
PCN12086 - Alternate Manufacturing Site for Assembly of the Listed Intersil PDIP Packaged Products -Amkor Technology, Philippines (ATP) Product Change Notice PDF 86 KB
PLC17007 - Q1 Cy 17 General Product Life Cycle Notice Product Life Cycle Notice PDF 292 KB