LM2575-5.0WU

Product Overview

Category

The LM2575-5.0WU belongs to the category of voltage regulators.

Use

It is primarily used for converting higher input voltages into a regulated 5.0V output voltage.

Characteristics

• Input Voltage Range: 8V to 40V
• Output Voltage: 5.0V
• Output Current: Up to 1A
• Efficiency: Up to 92%
• Switching Frequency: 52 kHz
• Operating Temperature Range: -40°C to +125°C

Package

The LM2575-5.0WU comes in a TO-263 package, also known as D2PAK or DDPAK.

Essence

This voltage regulator is designed to provide a stable and reliable 5.0V output voltage from a wide range of input voltages.

Packaging/Quantity

The LM2575-5.0WU is typically available in reels or tubes, with quantities varying depending on the supplier.

Specifications

• Input Voltage Range: 8V to 40V
• Output Voltage: 5.0V ±4%
• Output Current: Up to 1A
• Dropout Voltage: 1.3V (typical)
• Line Regulation: 0.5% (typical)
• Load Regulation: 0.5% (typical)
• Quiescent Current: 10mA (typical)
• Switching Frequency: 52 kHz
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The LM2575-5.0WU has the following pin configuration:

1. VIN (Pin 1): Input voltage pin
2. GND (Pin 2): Ground pin
3. FB (Pin 3): Feedback pin
4. VOUT (Pin 4): Output voltage pin
5. SW (Pin 5): Switching pin

Functional Features

• Wide input voltage range allows for flexibility in various applications.
• High efficiency ensures minimal power loss during voltage conversion.
• Built-in over-temperature and over-current protection enhances reliability.
• Adjustable output voltage through external resistors.

Advantages

• Compact TO-263 package enables easy integration into space-constrained designs.
• Wide operating temperature range makes it suitable for harsh environments.
• Low dropout voltage minimizes power dissipation.
• Excellent line and load regulation ensure a stable output voltage.

Disadvantages

• Requires additional external components for proper operation.
• Higher cost compared to linear regulators.
• Switching noise may require additional filtering in sensitive applications.

Working Principles

The LM2575-5.0WU is a step-down switching regulator that utilizes pulse-width modulation (PWM) to regulate the output voltage. It operates by rapidly switching an internal power transistor on and off, controlling the energy transfer from the input to the output. This switching action allows for efficient voltage conversion while minimizing power dissipation.

Detailed Application Field Plans

The LM2575-5.0WU finds applications in various fields, including:

1. Power supply modules for microcontrollers and digital circuits.
2. Battery-powered devices requiring a stable 5.0V voltage source.
3. Automotive electronics, such as infotainment systems and lighting controls.
4. Industrial automation and control systems.
5. Telecommunications equipment.

Detailed and Complete Alternative Models

1. LM2596-5.0: Similar to LM2575-5.0WU but available in different packages.
2. LM317: Linear regulator with adjustable output voltage.
3. LT1083: High-current linear regulator with adjustable output voltage.
4. TPS5430: Synchronous buck converter with adjustable output voltage.
5. LM2678: High-efficiency step-down switching regulator.

These alternative models offer similar functionality and can be considered based on specific application requirements.

In conclusion, the LM2575-5.0WU is a versatile voltage regulator that provides a stable 5.0V output voltage from a wide input voltage range. Its compact package, high efficiency, and robust features make it suitable for various applications in different industries.