ICL7662EPA+ - English Editing Encyclopedia Entry

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Converter

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

Package: 8-pin PDIP (Plastic Dual In-line Package)

Essence: The ICL7662EPA+ is a monolithic CMOS voltage converter that provides an easy and efficient way to convert positive voltage to negative voltage or vice versa.

Packaging/Quantity: The ICL7662EPA+ is available in tape and reel packaging, with 250 units per reel.

Specifications

• Input Voltage Range: +1.5V to +10V
• Output Voltage Range: -1.5V to -10V
• Output Current: Up to 40mA
• Operating Temperature Range: -40°C to +85°C
• Supply Voltage Rejection Ratio: 80dB
• Quiescent Current: 120µA (typical)
• Shutdown Current: 0.01µA (typical)

Detailed Pin Configuration

The ICL7662EPA+ has the following pin configuration:

1. GND (Ground)
2. VOUT (Output Voltage)
3. VIN (Input Voltage)
4. SHDN (Shutdown Control)
5. C1- (Negative Terminal of Flying Capacitor)
6. C1+ (Positive Terminal of Flying Capacitor)
7. C2+ (Positive Terminal of Output Capacitor)
8. C2- (Negative Terminal of Output Capacitor)

Functional Features

• Voltage Conversion: The ICL7662EPA+ can convert positive voltage to negative voltage or vice versa, making it suitable for various applications.
• Low Power Consumption: With a quiescent current of only 120µA, the ICL7662EPA+ is highly efficient and helps conserve power.
• Wide Input Voltage Range: The IC can accept input voltages ranging from +1.5V to +10V, providing flexibility in different applications.
• High Output Current Capability: With an output current capability of up to 40mA, the ICL7662EPA+ can drive various loads effectively.

Advantages and Disadvantages

Advantages: - Compact Size: The ICL7662EPA+ comes in a small 8-pin PDIP package, making it suitable for space-constrained applications. - Easy to Use: The IC requires minimal external components, simplifying the design process. - Versatile: It can be used in a wide range of applications that require voltage conversion.

Disadvantages: - Limited Output Current: The maximum output current of 40mA may not be sufficient for high-power applications. - Temperature Sensitivity: The performance of the IC may vary with temperature, requiring proper thermal management.

Working Principles

The ICL7662EPA+ utilizes a charge pump voltage converter topology to generate the desired output voltage. It uses two flying capacitors and two diodes to transfer charge between the input and output stages. By controlling the switching of these capacitors, the IC can create either positive or negative voltage at the output.

Detailed Application Field Plans

The ICL7662EPA+ finds applications in various fields, including:

1. Portable Electronics: It can be used to generate negative supply voltage for LCD displays, audio amplifiers, or other components in portable devices.
2. Industrial Automation: The IC can provide a negative voltage source for powering analog sensors, signal conditioning circuits, or control modules.
3. Automotive Electronics: It can be utilized in automotive systems to generate negative bias voltage for operational amplifiers, LED drivers, or other components.
4. Telecommunications: The IC can be employed in telecom equipment to generate negative voltage for line drivers, audio codecs, or power management circuits.

Detailed and Complete Alternative Models

1. ICL7660CPA: Similar to the ICL7662EPA+, this IC also provides voltage conversion capabilities but comes in an 8-pin DIP package.
2. MAX660CPA: This IC offers similar functionality with a higher output current capability of up to 100mA.
3. LTC1044CN8: Another alternative with voltage conversion features, available in an 8-pin PDIP package.

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

In conclusion, the ICL7662EPA+ is a versatile voltage converter IC that offers efficient positive-to-negative or negative-to-positive voltage conversion. With its compact size, low power consumption, and wide input voltage range, it finds applications in various fields such as portable electronics, industrial automation, automotive electronics, and telecommunications. While it has limitations in terms of output current and temperature sensitivity, there are alternative models available to suit different design needs.