LM2575-5.0WU-TR

Product Overview

Category

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

Use

This product is commonly used in electronic circuits to regulate and stabilize voltage levels.

Characteristics

• Input Voltage Range: 4.75V 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-TR comes in a TO-263-7 package, which is a surface-mount package with seven pins.

Essence

The essence of the LM2575-5.0WU-TR is its ability to efficiently convert higher input voltages into a stable 5.0V output voltage.

Packaging/Quantity

This product is typically packaged in reels or tubes, with a quantity of 2500 units per reel or 50 units per tube.

Specifications

• Input Voltage Range: 4.75V to 40V
• Output Voltage: 5.0V
• Output Current: Up to 1A
• Quiescent Current: 10mA
• Dropout Voltage: 1.2V (typical)
• Line Regulation: ±0.5% (typical)
• Load Regulation: ±0.5% (typical)
• Switching Frequency: 52 kHz
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

1. VIN: Input voltage pin
2. GND: Ground pin
3. FB: Feedback pin for setting the output voltage
4. COMP: Compensation pin for stability control
5. SS/TR: Soft-start/Shutdown pin
6. VOUT: Output voltage pin
7. SW: Switching pin for controlling the internal switch

Functional Features

• Wide input voltage range allows for versatile applications.
• High efficiency ensures minimal power loss during voltage conversion.
• Internal over-temperature and current limit protection enhance reliability.
• Soft-start feature prevents excessive inrush current during startup.
• Shutdown mode reduces power consumption when the regulator is not in use.

Advantages

• Compact size and surface-mount package make it suitable for space-constrained designs.
• Wide input voltage range enables compatibility with various power sources.
• High efficiency results in reduced heat dissipation and improved energy efficiency.
• Robust protection features enhance the reliability of the circuit.

Disadvantages

• The fixed output voltage may limit its applicability in certain scenarios where variable output voltages are required.
• The switching frequency of 52 kHz may introduce audible noise in sensitive audio applications.

Working Principles

The LM2575-5.0WU-TR utilizes a step-down switching regulator topology to convert higher input voltages into a stable 5.0V output. It employs an internal switch that rapidly switches on and off, controlling the flow of energy from the input to the output. This switching action, combined with inductors and capacitors, efficiently steps down the voltage while minimizing power loss.

Detailed Application Field Plans

The LM2575-5.0WU-TR 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 dashboard displays.
4. Industrial control systems and automation equipment.
5. LED lighting applications.

Detailed and Complete Alternative Models

1. LM2596-5.0: Similar to LM2575-5.0WU-TR, but with adjustable output voltage.
2. LM317: Linear regulator with adjustable output voltage.
3. LT1084: High-current linear regulator with adjustable output voltage.
4. TPS5430: Synchronous buck converter with adjustable output voltage.

These alternative models offer different features and capabilities, providing flexibility for various design requirements.

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