ICL7662CPA

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Converter/Regulator

Characteristics: - Low power consumption - Wide input voltage range - High output current capability - Compact size

Package: PDIP (Plastic Dual In-Line Package)

Essence: The ICL7662CPA is a monolithic CMOS voltage converter/regulator that provides an easy and efficient way to generate a negative voltage from a positive input voltage.

Packaging/Quantity: The ICL7662CPA is available in a 8-pin PDIP package. It is typically sold in quantities of 25 or more.

Specifications

• Input Voltage Range: 1.5V to 12V
• Output Voltage Range: -1.5V to -12V
• Output Current: Up to 40mA
• Operating Temperature Range: -40°C to +85°C
• Supply Current: 120µA (typical)
• Conversion Efficiency: Up to 99%

Detailed Pin Configuration

The ICL7662CPA has 8 pins, which are labeled as follows:

1. GND (Ground)
2. V+ (Positive Supply Voltage)
3. OSC (Oscillator Frequency Control)
4. C1- (Negative Terminal of Capacitor C1)
5. C1+ (Positive Terminal of Capacitor C1)
6. VOUT (Negative Output Voltage)
7. C2+ (Positive Terminal of Capacitor C2)
8. C2- (Negative Terminal of Capacitor C2)

Functional Features

• Voltage Conversion: The ICL7662CPA converts a positive input voltage into a negative output voltage.
• Voltage Regulation: It provides a stable and regulated negative voltage output.
• Oscillator Frequency Control: The OSC pin allows control over the frequency of the internal oscillator, enabling fine-tuning of the output voltage.

Advantages and Disadvantages

Advantages: - Low power consumption - Wide input voltage range - High output current capability - Compact size - Easy to use and integrate into circuits

Disadvantages: - Limited output current capacity (up to 40mA) - Requires external capacitors for proper operation

Working Principles

The ICL7662CPA utilizes a switched-capacitor technique to generate a negative voltage from a positive input voltage. It employs an internal oscillator to control the charge and discharge cycles of two external capacitors (C1 and C2). By alternately connecting and disconnecting these capacitors to the input and output voltages, the IC effectively creates a negative voltage at the VOUT pin.

Detailed Application Field Plans

The ICL7662CPA finds applications in various fields, including:

1. Portable Electronics: It is used to generate a negative voltage required by LCD displays, backlighting systems, and other components in portable devices.
2. Industrial Automation: The IC is employed in control systems that require a stable negative voltage source.
3. Automotive Electronics: It is utilized in automotive applications where a negative voltage is necessary for specific subsystems or sensors.
4. Telecommunications: The ICL7662CPA is used in telecommunication equipment to provide a regulated negative voltage for various circuitry.

Detailed and Complete Alternative Models

1. MAX660CPA: This IC offers similar functionality and features as the ICL7662CPA. It is available in an 8-pin PDIP package.
2. LTC1044CN8: Another alternative with comparable specifications and pin configuration. It comes in an 8-pin PDIP package.
3. ICL7660CPA: This IC is a close alternative to the ICL7662CPA, providing voltage conversion and regulation capabilities. It is also available in an 8-pin PDIP package.

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

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