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The ICL7660ESA+T is a voltage converter IC manufactured by Maxim Integrated. Below are the factual specifications, descriptions, and features from the Manufactor Datasheet:

Specifications:

• Manufacturer: Maxim Integrated
• Part Number: ICL7660ESA+T
• Package: 8-SOIC (0.154", 3.90mm Width)
• Operating Temperature Range: -40°C to +85°C
• Supply Voltage Range: 1.5V to 10V
• Output Voltage: Negative voltage conversion (inverts input voltage)
• Output Current: Up to 40mA (typical)
• Switching Frequency: ~10kHz (typical)
• Efficiency: Up to 99.9% (typical)
• Low Power Consumption: 80µA (typical)

Descriptions:

The ICL7660ESA+T is a monolithic CMOS voltage converter capable of converting a positive input voltage in the range of 1.5V to 10V to a corresponding negative output voltage. It is designed for applications requiring a simple, efficient, and low-power solution for generating a negative supply rail.

Features:

• Voltage Inversion: Converts +1.5V to +10V input to -1.5V to -10V output.
• Voltage Doubling: Can be configured to double the input voltage.
• Low Power Consumption: Ideal for battery-powered applications.
• No External Diodes Required: Internal charge pump eliminates the need for external diodes.
• Wide Operating Voltage Range: Supports input voltages from 1.5V to 10V.
• High Efficiency: Up to 99.9% conversion efficiency.
• Compact Package: Available in an 8-pin SOIC package for space-constrained designs.

This information is based on the manufacturer's datasheet and technical documentation.