LM2576-5.0BU TR

Product Overview

Category

The LM2576-5.0BU 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: 5V
• Output Current: Up to 3A
• Efficiency: Up to 92%
• Switching Frequency: 52 kHz
• Operating Temperature Range: -40°C to +125°C

Package

The LM2576-5.0BU TR comes in a TO-263 package, also known as D2PAK or DDPAK.

Essence

The essence of this product lies in its ability to efficiently convert higher input voltages into a stable 5V output for various applications.

Packaging/Quantity

The LM2576-5.0BU TR is typically available in reels containing 250 units per reel.

Specifications

• Input Voltage Range: 4.75V to 40V
• Output Voltage: 5V
• Output Current: Up to 3A
• 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
• Package Type: TO-263 (D2PAK)

Detailed Pin Configuration

The LM2576-5.0BU TR 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.
• Overcurrent protection safeguards the circuit from excessive current.
• Thermal shutdown protection prevents damage due to overheating.
• Adjustable output voltage using external resistors.

Advantages and Disadvantages

Advantages

• Wide input voltage range enables compatibility with different power sources.
• High efficiency reduces energy wastage and heat generation.
• Compact TO-263 package facilitates easy integration into circuits.
• Overcurrent and thermal protection enhance reliability and safety.
• Adjustable output voltage provides versatility for various applications.

Disadvantages

• The switching frequency of 52 kHz may introduce some noise in sensitive applications.
• Requires additional external components for proper operation.
• Limited output current compared to some other voltage regulators.

Working Principles

The LM2576-5.0BU TR is a step-down switching regulator that utilizes pulse-width modulation (PWM) to regulate the output voltage. It operates by rapidly switching the internal power transistor on and off, controlling the duty cycle to maintain a stable 5V output. This switching action allows for efficient voltage conversion while minimizing power dissipation.

Detailed Application Field Plans

The LM2576-5.0BU TR finds extensive use in various electronic applications, including but not limited to:

1. Power supplies for microcontrollers and digital circuits.
2. Battery charging circuits.
3. Automotive electronics.
4. Industrial control systems.
5. LED lighting applications.
6. Portable devices and battery-powered equipment.

Detailed and Complete Alternative Models

Some alternative models that can be considered as alternatives to the LM2576-5.0BU TR include:

1. LM2596-5.0: Similar functionality with adjustable output voltage.
2. LM317: Linear voltage regulator with adjustable output voltage.
3. LT1084: High current linear voltage regulator.
4. TPS5430: Synchronous buck converter with adjustable output voltage.

These alternative models offer different features and specifications, allowing users to choose the most suitable option for their specific requirements.

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