ICL7660ESA+

Voltage Regulators - DC DC Switching Regulators Overview

The ICL7660ESA+ is a monolithic CMOS charge pump voltage converter manufactured by Analog Devices Inc./Maxim Integrated. It operates within an input voltage range of 1.5 V to 10 V and provides a single fixed output configured for positive or negative conversion. The device delivers a maximum output current of 20 mA with a switching frequency of 10 kHz. It is housed in an 8-SOIC surface-mount package and supports an operating temperature range from -40°C to +85°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Utilizes switched-capacitor topology to perform DC-DC voltage conversion without requiring inductors.
• Capable of generating both positive boost and negative inverting output voltages from a single supply.
• Includes a low-voltage control pin (LV) that automatically grounds when input voltage drops below 3.5 V.

Voltage Regulators - DC DC Switching Regulators Applications

• Generating negative supply rails for operational amplifiers
• Providing power for data acquisition systems
• Supplying bias voltage for dynamic RAM modules

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix designation, as the base model ICL7660 has been discontinued. Confirm RoHS compliance status, as original Maxim versions were non-compliant while the '+' suffix indicates lead-free construction. Ensure the supplier source is authorized to guarantee authenticity for this legacy component.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component for applications requiring simple polarity inversion or voltage boosting where inductor size is a constraint. It is suitable for low-power circuits drawing up to 20 mA. Consider thermal performance in the SOIC package if operating near the upper temperature limits.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the ICL7660 family of super voltage converters. It serves as a direct functional replacement for industry-standard devices like the MAX1044 and TC7660. The series is designed for battery-powered equipment requiring efficient power management without magnetic components.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes include ICL7660ISA+, LMC7660IM/NOPB, and TC7660EOA. Verify pin compatibility and electrical specifications before substitution.

Voltage Regulators - DC DC Switching Regulators FAQ

How does the LV pin function?

The LV pin controls the internal oscillator frequency. It should be grounded when the input voltage is below 3.5 V and left floating when above 5 V.

What is the typical static current consumption?

The typical quiescent current is approximately 170 µA, making it suitable for battery-operated applications.