ICL7660C/D

Voltage Regulators - DC DC Switching Regulators Overview

The ICL7660C/D is a CMOS switched-capacitor voltage converter manufactured by Analog Devices Inc./Maxim Integrated. It operates within an input voltage range of 1.5 V to 10 V and delivers a maximum output current of 20 mA. The device supports boost and inverting topologies, providing adjustable output voltages from -10 V to -1.5 V for inversion or 3 V to 20 V for boosting. It functions at a switching frequency of 10 kHz with a typical supply current of 170 µA. The component is housed in an 8-pin SOIC package and is rated for operation between 0°C and +70°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Utilizes charge-pump architecture to generate negative or boosted voltages without requiring external inductors.
• Provides high efficiency at lower operating frequencies compared to earlier generations.
• Features low standby current consumption suitable for battery-powered applications.

Voltage Regulators - DC DC Switching Regulators Applications

• Providing onboard negative power supplies for dynamic RAM (DRAM).
• Generating negative power rails for centralized microprocessor systems such as the 8080 series.
• Supplying negative voltages for data acquisition systems.

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix designation when ordering, as it determines the temperature grade and packaging format. Confirm RoHS compliance status, as older variants may not meet current environmental standards. Check manufacturer documentation for any product change notices or obsolescence alerts associated with this part number before finalizing procurement plans.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when designing circuits that require simple voltage inversion or boosting without magnetic components. Ensure the load current does not exceed 20 mA and the input voltage remains within the 1.5 V to 10 V range. Consider the 10 kHz switching frequency for noise sensitivity in adjacent analog signal paths.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the ICL7660 family of switched-capacitor converters. It serves as a fundamental building block for generating auxiliary power rails in mixed-signal systems. The 'C' suffix typically denotes the commercial temperature range variant.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes include ICL7660ESA+ and ICL7660ISA+. Alternative manufacturers offer compatible parts such as LMC7660IM/NOPB from Texas Instruments and TC7660EOA from Microchip Technology.