Renesas — ICL7660 Series Voltage Conversion ICs

Renesas ICL7660 Series Voltage Conversion ICs

Voltage-conversion ICs offer extended voltage range and lower supply current

The ICL7660S and ICL7660A are monolithic CMOS voltage-conversion ICs which offer substantial performance advantages over similar devices. Direct replacements for the industry-standard ICL7660, these products offer an extended operating supply-voltage range up to 12 V and lower typical supply current of 80 µA.


The ICL7660S and ICL7660A perform supply-voltage conversions from positive to negative over an input-voltage range of 1.5 V to 12 V, producing complementary output voltages of -1.5 V to -12 V. 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, generating up to 22.8 V from a 12 V input. These parts can also be used as voltage multipliers or voltage dividers, and for the simple conversion of +5 V to ±5 V power supplies.


Important performance characteristics are guaranteed over the entire commercial and industrial temperature ranges.


A Frequency Boost pin enables the designer to achieve lower output impedance despite using smaller capacitors.


  • 100% tested at 3 V
  • Minimum 96% power efficiency
  • Minimum 99% open-circuit voltage-conversion efficiency
  • Improved latch-up protection


  • Data acquisition systems
  • Instrumentation
  • RS-232 power supplies

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