MAX749EPA+ - English Editing Encyclopedia Entry

Product Overview

Category: Integrated Circuit (IC)

Use: The MAX749EPA+ is a versatile integrated circuit primarily used for voltage regulation and power management applications. It provides a reliable and efficient solution for various electronic devices.

Characteristics: - Voltage regulation - Power management - High efficiency - Low power consumption - Wide input voltage range - Stable output voltage

Package: The MAX749EPA+ is available in an 8-pin DIP (Dual Inline Package) format, which ensures easy integration into electronic circuits.

Essence: The MAX749EPA+ is designed to regulate and manage voltage levels within electronic systems, ensuring stable and reliable operation.

Packaging/Quantity: The MAX749EPA+ is typically packaged in reels or tubes, with each reel/tube containing a specific quantity of ICs. The exact packaging and quantity may vary depending on the manufacturer.

Specifications

The MAX749EPA+ offers the following specifications:

• Input Voltage Range: 2.7V to 11V
• Output Voltage Range: Adjustable from 1.25V to 10V
• Maximum Output Current: 100mA
• Dropout Voltage: 300mV at 100mA
• Quiescent Current: 120µA
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The MAX749EPA+ features an 8-pin DIP package with the following pin configuration:

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| | --| Vout Vin |-- Pin 1: Output Voltage (Vout) --| GND EN |-- Pin 2: Ground (GND) --| FB NC |-- Pin 3: Feedback (FB) --| NC NC |-- Pin 4: Not Connected (NC) --| NC NC |-- Pin 5: Not Connected (NC) --| NC ENB |-- Pin 6: Enable/Shutdown (EN/ENB) --| NC Vcc |-- Pin 7: Positive Power Supply (Vcc) --| NC Vin |-- Pin 8: Input Voltage (Vin) |___________| ```

Functional Features

The MAX749EPA+ offers the following functional features:

1. Voltage Regulation: The IC regulates the output voltage within a specified range, ensuring stability and reliability in electronic systems.

2. Power Management: It efficiently manages power consumption, optimizing energy usage and extending battery life in portable devices.

3. Enable/Shutdown Control: The EN/ENB pin allows for easy enablement or shutdown of the IC, providing flexibility in system design and power management.

4. Low Dropout Voltage: With a dropout voltage as low as 300mV at 100mA, the MAX749EPA+ minimizes power dissipation and enhances overall efficiency.

Advantages and Disadvantages

Advantages: - Wide input voltage range enables compatibility with various power sources. - Stable output voltage ensures reliable operation of connected devices. - Low quiescent current minimizes power consumption. - Compact and easy-to-integrate DIP package simplifies circuit design.

Disadvantages: - Limited maximum output current may not be suitable for high-power applications. - Lack of built-in protection features may require additional external circuitry for certain applications.

Working Principles

The MAX749EPA+ operates based on a feedback control mechanism. It compares the output voltage with a reference voltage and adjusts the internal circuitry to maintain a stable output voltage. This regulation process ensures that the connected devices receive a consistent and reliable power supply.

Application Field Plans

The MAX749EPA+ finds applications in various fields, including but not limited to:

1. Consumer Electronics: Power management and voltage regulation in smartphones, tablets, and portable media players.
2. Industrial Automation: Control systems, motor drives, and power supplies.
3. Automotive Electronics: Voltage regulation for automotive sensors, lighting systems, and infotainment devices.
4. Telecommunications: Power management in routers, switches, and network equipment.
5. Medical Devices: Voltage regulation and power management in medical instruments and equipment.

Alternative Models

For users seeking alternative options, the following ICs can be considered:

1. LM317: A popular adjustable voltage regulator with a wide input voltage range and high output current capability.
2. LT1084: A low dropout linear regulator suitable for high-power applications.
3. TPS7A47: An ultra-low noise, high PSRR (Power Supply Rejection Ratio) voltage regulator for sensitive electronic systems.

These alternatives offer similar functionality and can be evaluated based on specific application requirements.

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