ICL7660CBA-T

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Converter

Characteristics: - Converts input voltage to a negative output voltage - Low power consumption - High efficiency - Wide operating voltage range - Compact package size

Package: 8-Pin SOIC (Small Outline Integrated Circuit)

Essence: The ICL7660CBA-T is a voltage converter IC that generates a negative output voltage from a positive input voltage. It is commonly used in electronic circuits where a negative voltage source is required.

Packaging/Quantity: The ICL7660CBA-T is available in tape and reel packaging, with 2500 units per reel.

Specifications

• Input Voltage Range: 1.5V to 10V
• Output Voltage Range: -1.5V to -10V
• Output Current: Up to 100mA
• Operating Temperature Range: -40°C to +85°C
• Supply Current: 120µA (typical)
• Switching Frequency: 10kHz (typical)

Detailed Pin Configuration

The ICL7660CBA-T has 8 pins arranged as follows:

```

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| | --| V+ GND |-- Pin 1: Positive Supply Voltage (V+) --| VIN VOUT|-- Pin 2: Input Voltage (VIN) / Output Voltage (VOUT) --| OSC NC |-- Pin 3: Oscillator (OSC) / No Connection (NC) --| C1 C2 |-- Pins 4 and 5: Capacitor Connections (C1, C2) --| GND V- |-- Pin 6: Ground (GND) / Negative Output Voltage (V-) --| NC NC |-- Pins 7 and 8: No Connection (NC) |___________| ```

Functional Features

• Voltage Conversion: The ICL7660CBA-T converts a positive input voltage into a negative output voltage, allowing for the generation of a dual power supply in electronic circuits.
• Low Power Consumption: It operates with low power consumption, making it suitable for battery-powered devices.
• High Efficiency: The IC exhibits high efficiency in converting voltages, minimizing power losses.
• Wide Operating Voltage Range: It can accept input voltages ranging from 1.5V to 10V, providing flexibility in various applications.
• Compact Package Size: The 8-pin SOIC package offers a compact form factor, saving space on circuit boards.

Advantages and Disadvantages

Advantages: - Simple integration into electronic circuits - Efficient voltage conversion - Wide operating voltage range - Low power consumption

Disadvantages: - Limited output current capacity (up to 100mA) - Requires external capacitors for proper operation

Working Principles

The ICL7660CBA-T utilizes charge pumps to generate the negative output voltage. It employs an internal oscillator to control the switching of capacitors, which results in the conversion of the input voltage to a negative output voltage. The IC regulates the output voltage by adjusting the duty cycle of the switching waveform.

Detailed Application Field Plans

The ICL7660CBA-T finds applications in various fields, including:

1. Audio Equipment: It is used in audio amplifiers and mixers that require a dual power supply.
2. Telecommunications: The IC is utilized in telecommunication systems for generating negative voltage rails.
3. Industrial Control Systems: It is employed in industrial control systems where a negative voltage source is necessary.
4. Automotive Electronics: The IC is used in automotive electronics for generating negative voltages required by certain components.
5. Portable Devices: It finds applications in portable devices such as smartphones, tablets, and portable media players.

Detailed and Complete Alternative Models

1. MAX660CPA: Voltage Converter IC with similar specifications and pin configuration.
2. LT1054CN8: Another alternative voltage converter IC with comparable features.
3. TC7660CPA: Voltage converter IC suitable for low-power applications.

These alternative models can be considered based on specific requirements and availability.

In conclusion, the ICL7660CBA-T is a versatile voltage converter IC that efficiently generates a negative output voltage from a positive input voltage. With its compact package size and wide operating voltage range, it finds applications in various fields, including audio equipment, telecommunications, industrial control systems, automotive electronics, and portable devices. While it offers advantages such as simplicity, efficiency, and low power consumption, it has limitations in terms of output current capacity and the need for external capacitors. Alternative models like MAX660CPA, LT1054CN8, and TC7660CPA can be considered as substitutes depending on specific needs.