MAX774EPA+ - English Editing Encyclopedia Entry

Product Overview

Category

MAX774EPA+ belongs to the category of integrated circuits (ICs).

Use

It is primarily used as a voltage regulator.

Characteristics

• Package: The MAX774EPA+ comes in an 8-pin PDIP package.
• Essence: This IC is designed to provide a regulated output voltage from a wide input voltage range.
• Packaging/Quantity: It is typically sold in reels or tubes, with a quantity of 250 units per reel/tube.

Specifications

The specifications for MAX774EPA+ are as follows:

• Input Voltage Range: 4.5V to 28V
• Output Voltage Range: 1.25V to 26V
• Output Current: Up to 500mA
• Dropout Voltage: 300mV at 100mA
• Line Regulation: ±0.05% typical
• Load Regulation: ±0.2% typical
• Quiescent Current: 120µA typical

Pin Configuration

The pin configuration for MAX774EPA+ is as follows:

```

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

Functional Features

The MAX774EPA+ offers the following functional features:

1. Wide Input Voltage Range: It can accept input voltages ranging from 4.5V to 28V, making it suitable for various applications.
2. Adjustable Output Voltage: The output voltage can be adjusted from 1.25V to 26V, providing flexibility for different requirements.
3. Low Dropout Voltage: With a dropout voltage of only 300mV at 100mA, it minimizes power dissipation and improves efficiency.
4. Low Quiescent Current: The quiescent current of 120µA ensures low power consumption during standby or idle modes.
5. Overcurrent and Thermal Protection: It incorporates built-in protection mechanisms to safeguard against overcurrent and excessive heat.

Advantages and Disadvantages

Advantages

• Wide input voltage range allows for versatile applications.
• Adjustable output voltage provides flexibility.
• Low dropout voltage minimizes power dissipation.
• Low quiescent current ensures energy efficiency.
• Built-in protection features enhance reliability.

Disadvantages

• Limited maximum output current (up to 500mA).
• Non-standard pin configuration may require specific PCB layout considerations.

Working Principles

The MAX774EPA+ operates as a linear voltage regulator. It uses a feedback mechanism to maintain a stable output voltage regardless of variations in the input voltage or load conditions. By comparing the output voltage with a reference voltage, it adjusts the internal circuitry to regulate the output within the desired range.

Detailed Application Field Plans

The MAX774EPA+ finds applications in various fields, including but not limited to:

1. Power Supply Modules: It can be used in power supply modules for electronic devices, providing regulated voltages for stable operation.
2. Battery-Powered Systems: It is suitable for battery-powered systems that require efficient voltage regulation to prolong battery life.
3. Industrial Automation: The IC can be utilized in industrial automation equipment, ensuring reliable and stable power supply for control circuits.
4. Automotive Electronics: It finds application in automotive electronics, such as infotainment systems or engine control units, where voltage stability is crucial.

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to MAX774EPA+ are:

1. LM317: A popular adjustable linear voltage regulator with a wide input voltage range and adjustable output voltage.
2. LT1084: A high-current linear voltage regulator capable of delivering up to 5A output current.
3. LM1117: A low dropout voltage regulator with fixed output voltage options.

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

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