ICL7660CPA+ - English Editing Encyclopedia Entry

Product Overview

Category

ICL7660CPA+ belongs to the category of integrated circuits (ICs).

Use

The ICL7660CPA+ is primarily used as a voltage converter or voltage regulator in electronic circuits.

Characteristics

• Voltage conversion: The ICL7660CPA+ can convert input voltages ranging from 1.5V to 10V into negative output voltages.
• Efficiency: It offers high efficiency in voltage conversion, making it suitable for low-power applications.
• Package: The ICL7660CPA+ comes in an 8-pin PDIP (Plastic Dual In-line Package) package.
• Essence: This IC is designed to provide a cost-effective solution for generating negative voltages in various electronic devices.
• Packaging/Quantity: The ICL7660CPA+ is typically available in reels or tubes, with quantities varying based on the supplier.

Specifications

• Input Voltage Range: 1.5V to 10V
• Output Voltage Range: -1.5V to -10V
• Maximum Output Current: 20mA
• Operating Temperature Range: -40°C to +85°C
• Supply Voltage: ±1.5V to ±10V
• Quiescent Current: 120µA

Detailed Pin Configuration

The ICL7660CPA+ has eight pins, each serving a specific function:

1. GND: Ground pin.
2. V+ (Pin 1): Positive supply voltage input.
3. Vout (Pin 2): Negative output voltage.
4. OSC (Pin 3): Oscillator frequency control.
5. C1- (Pin 4): Capacitor connection for oscillator frequency control.
6. C1+ (Pin 5): Capacitor connection for oscillator frequency control.
7. C2+ (Pin 6): Capacitor connection for voltage conversion.
8. C2- (Pin 7): Capacitor connection for voltage conversion.

Functional Features

The ICL7660CPA+ offers the following functional features:

1. Voltage Conversion: It efficiently converts positive input voltages into negative output voltages.
2. Oscillator Frequency Control: The oscillator frequency can be adjusted using external capacitors connected to the OSC, C1-, and C1+ pins.
3. Low Power Consumption: The IC operates with low quiescent current, making it suitable for battery-powered applications.
4. Overload Protection: The ICL7660CPA+ incorporates overload protection circuitry to prevent damage due to excessive current or voltage.

Advantages and Disadvantages

Advantages

• Cost-effective solution for generating negative voltages.
• High efficiency in voltage conversion.
• Compact package size.
• Wide operating temperature range.

Disadvantages

• Limited maximum output current (20mA).
• Requires external capacitors for proper operation.
• Not suitable for high-power applications.

Working Principles

The ICL7660CPA+ utilizes charge pumps to convert positive input voltages into negative output voltages. It employs an internal oscillator to control the switching of the charge pump capacitors, resulting in the desired voltage conversion. The IC regulates the output voltage by adjusting the duty cycle of the internal switches.

Detailed Application Field Plans

The ICL7660CPA+ finds applications in various electronic devices and systems, including but not limited to: - Portable electronic devices - Battery-powered equipment - Audio amplifiers - LCD displays - Industrial control systems - Automotive electronics

Detailed and Complete Alternative Models

1. MAX660CPA: Similar voltage converter IC with comparable specifications and pin configuration.
2. LTC1044CN8: Alternative voltage converter IC with extended temperature range and higher output current capability.
3. ICL7660SCPAZ: Surface-mount version of the ICL7660CPA+ with the same functionality.

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

In conclusion, the ICL7660CPA+ is a versatile integrated circuit used for voltage conversion in various electronic applications. Its cost-effectiveness, efficiency, and compact package make it a popular choice among designers. However, its limited output current and external capacitor requirement should be taken into consideration when selecting this IC for high-power applications.