MAX761CPA+ - English Editing Encyclopedia Entry

Product Overview

Category: Integrated Circuits (ICs)

Use: The MAX761CPA+ is a voltage converter IC that provides a regulated negative voltage output. It is commonly used in electronic devices where a negative voltage supply is required, such as in audio amplifiers, LCD displays, and industrial control systems.

Characteristics: - Input Voltage Range: 2.5V to 12V - Output Voltage Range: -1.25V to -27V - Output Current: Up to 50mA - Low Quiescent Current: 120µA - High Efficiency: Up to 90% - Package Type: 8-pin PDIP (Plastic Dual In-line Package) - Essence: Voltage Converter IC

Packaging/Quantity: The MAX761CPA+ is available in a standard 8-pin PDIP package. It is typically sold in reels or tubes containing multiple units.

Specifications

The specifications of the MAX761CPA+ are as follows:

• Input Voltage Range: 2.5V to 12V
• Output Voltage Range: -1.25V to -27V
• Output Current: Up to 50mA
• Quiescent Current: 120µA
• Efficiency: Up to 90%
• Operating Temperature Range: -40°C to +85°C
• Package Type: 8-pin PDIP
• Lead-Free Status: RoHS Compliant

Pin Configuration

The MAX761CPA+ features an 8-pin PDIP package with the following pin configuration:

```

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| | --| Vout Vin |-- --| GND FB |-- --| SW NC |-- |___________| ```

Pin Description: - Vout: Negative Voltage Output - Vin: Positive Voltage Input - GND: Ground - FB: Feedback Pin for Voltage Regulation - SW: Switching Pin - NC: No Connection

Functional Features

The MAX761CPA+ offers the following functional features:

1. Voltage Conversion: It efficiently converts a positive input voltage into a regulated negative output voltage.
2. Wide Input Voltage Range: It can accept input voltages ranging from 2.5V to 12V, making it suitable for various applications.
3. Low Quiescent Current: The IC has a low quiescent current of only 120µA, minimizing power consumption.
4. High Efficiency: With an efficiency of up to 90%, it maximizes power conversion efficiency.
5. Short-Circuit Protection: The IC includes built-in short-circuit protection to prevent damage in case of a fault.

Advantages and Disadvantages

Advantages: - Efficient voltage conversion - Wide input voltage range - Low quiescent current - High efficiency - Short-circuit protection

Disadvantages: - Limited output current (up to 50mA) - Requires external components for proper operation

Working Principles

The MAX761CPA+ operates based on a switched-capacitor voltage converter topology. It utilizes an internal oscillator and switches to convert the input voltage into a regulated negative output voltage. The feedback pin (FB) is used to control the output voltage level, ensuring stability and accuracy.

Application Field Plans

The MAX761CPA+ finds applications in various fields, including: 1. Audio Amplifiers: Provides a negative voltage supply for audio amplification circuits. 2. LCD Displays: Generates the required negative voltage for driving LCD panels. 3. Industrial Control Systems: Used in industrial control systems that require a negative voltage source.

Alternative Models

In addition to the MAX761CPA+, there are several alternative models available that offer similar functionality. Some notable alternatives include: - MAX660CPA - ICL7660CPA - LT1054CP

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

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