ICL7662CBA

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Converter/Regulator

Characteristics: - Low power consumption - Wide input voltage range - High efficiency - Compact size

Package: DIP (Dual In-line Package)

Essence: The ICL7662CBA is a monolithic CMOS voltage converter/regulator that provides an easy and cost-effective solution for generating a negative voltage from a positive input voltage.

Packaging/Quantity: The ICL7662CBA is available in a 8-pin DIP package. It is typically sold in reels of 2500 units.

Specifications

• Input Voltage Range: 1.5V to 12V
• Output Voltage Range: -1.5V to -12V
• 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 ICL7662CBA has 8 pins, which are labeled as follows:

1. GND (Ground)
2. V+ (Positive Power Supply)
3. OSC (Oscillator Frequency Control)
4. C1- (Negative Capacitor Terminal)
5. C1+ (Positive Capacitor Terminal)
6. SW (Switch)
7. VOUT (Negative Output Voltage)
8. VIN (Positive Input Voltage)

Functional Features

• Voltage Conversion: The ICL7662CBA converts a positive input voltage into a corresponding negative output voltage.
• Oscillator Frequency Control: The OSC pin allows the user to adjust the switching frequency of the voltage converter.
• Low Power Consumption: The IC operates with low supply current, making it suitable for battery-powered applications.
• Overload Protection: The ICL7662CBA incorporates built-in overload protection to prevent damage to the device.

Advantages and Disadvantages

Advantages: - Compact size allows for easy integration into space-constrained designs. - Wide input voltage range enables compatibility with various power sources. - High efficiency results in minimal power loss during voltage conversion. - Low power consumption extends battery life in portable applications.

Disadvantages: - Limited output current may not be suitable for high-power applications. - Requires external capacitors for proper operation, adding to the overall component count.

Working Principles

The ICL7662CBA utilizes a charge pump voltage converter circuit to generate a negative output voltage. It employs a switched-capacitor technique to transfer energy from the input to the output. The internal oscillator controls the switching frequency, allowing for efficient voltage conversion.

Detailed Application Field Plans

The ICL7662CBA finds application in various fields, including:

1. Portable Electronics: It is used to generate a negative voltage required by LCD displays, backlighting systems, and audio amplifiers in devices such as smartphones, tablets, and portable media players.
2. Industrial Automation: The IC is employed in control systems that require a negative voltage supply, such as motor drives, sensors, and actuators.
3. Automotive Electronics: It is utilized in automotive applications where a negative voltage is needed for powering components like LED lighting, infotainment systems, and dashboard displays.

Detailed and Complete Alternative Models

1. MAX660CPA: A similar CMOS voltage converter/regulator with comparable specifications and pin configuration.
2. LTC1044CN8: Another voltage converter IC offering similar functionality and performance characteristics.
3. ICL7660SCPAZ: An alternative model from the same manufacturer, offering slightly different specifications but compatible pin configuration.

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

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