LM2575WU-TR

Product Overview

Category

The LM2575WU-TR belongs to the category of voltage regulators.

Use

It is commonly used to regulate voltage in electronic circuits.

Characteristics

• High efficiency
• Wide input voltage range
• Adjustable output voltage
• Low standby current
• Thermal shutdown protection

Package

The LM2575WU-TR is available in a TO-263 package.

Essence

This voltage regulator is designed to provide a stable and regulated output voltage for various electronic applications.

Packaging/Quantity

The LM2575WU-TR is typically packaged in reels and comes in quantities of 2500 units per reel.

Specifications

• Input Voltage Range: 4.75V to 40V
• Output Voltage Range: 1.23V to 37V
• Output Current: Up to 1A
• Switching Frequency: 52 kHz
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The LM2575WU-TR has the following pin configuration:

1. VIN (Input Voltage)
2. GND (Ground)
3. FB (Feedback)
4. VOUT (Output Voltage)

Functional Features

• High Efficiency: The LM2575WU-TR offers high efficiency, minimizing power loss during voltage regulation.
• Wide Input Voltage Range: It can accept a wide range of input voltages, making it suitable for various applications.
• Adjustable Output Voltage: The output voltage can be adjusted using external resistors, providing flexibility.
• Low Standby Current: In standby mode, the LM2575WU-TR consumes very low current, conserving energy.
• Thermal Shutdown Protection: It incorporates thermal shutdown protection to prevent overheating and damage.

Advantages and Disadvantages

Advantages

• High efficiency leads to reduced power dissipation.
• Wide input voltage range allows for versatile applications.
• Adjustable output voltage provides flexibility.
• Low standby current helps conserve energy.
• Thermal shutdown protection prevents overheating.

Disadvantages

• Limited output current capacity (up to 1A).
• Requires external resistors for output voltage adjustment.

Working Principles

The LM2575WU-TR operates as a step-down switching regulator. It uses a pulse-width modulation (PWM) control scheme to regulate the output voltage. The internal oscillator generates a fixed frequency signal, which controls the duty cycle of the switch. By adjusting the duty cycle, the output voltage is regulated. The feedback pin monitors the output voltage and adjusts the duty cycle accordingly.

Detailed Application Field Plans

The LM2575WU-TR finds applications in various fields, including:

1. Power supply circuits for electronic devices
2. Battery charging circuits
3. Automotive electronics
4. Industrial automation systems
5. Telecommunications equipment

Detailed and Complete Alternative Models

Some alternative models that can be considered as alternatives to the LM2575WU-TR are:

1. LM2596-ADJ
2. LM317T
3. LM7805
4. LT1084CP-5
5. TPS5430

These models offer similar functionality and can be used as substitutes depending on specific requirements.

In conclusion, the LM2575WU-TR is a highly efficient voltage regulator with a wide input voltage range and adjustable output voltage. It offers several advantages such as low standby current and thermal shutdown protection. While it has limitations in terms of output current capacity, it finds applications in various fields and has alternative models available in the market.