LM2576-5.0BU

Product Overview

Category

The LM2576-5.0BU belongs to the category of voltage regulators.

Use

It is commonly used to regulate and control the output voltage in electronic circuits.

Characteristics

• Input Voltage Range: 4.75V to 40V
• Output Voltage: 5.0V
• 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 comes in a TO-263 package, also known as D2PAK or DDPAK.

Essence

The essence of LM2576-5.0BU is its ability to efficiently convert higher input voltages into a stable 5.0V output voltage.

Packaging/Quantity

The LM2576-5.0BU is typically packaged in reels or tubes, with quantities varying depending on the supplier.

Specifications

• Input Voltage Range: 4.75V to 40V
• Output Voltage: 5.0V
• 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 has the following pin configuration:

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

Functional Features

• Wide input voltage range allows for versatile applications.
• High efficiency ensures minimal power loss during voltage conversion.
• Overcurrent and thermal protection safeguards the circuit and the regulator.
• Adjustable output voltage using external resistors.

Advantages

• Efficient voltage regulation with high conversion efficiency.
• Wide input voltage range enables compatibility with various power sources.
• Compact package size facilitates easy integration into electronic circuits.
• Built-in protection features enhance reliability and safety.

Disadvantages

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

Working Principles

The LM2576-5.0BU 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 flow from the input to the output. This switching action allows for efficient voltage conversion while minimizing power dissipation.

Detailed Application Field Plans

The LM2576-5.0BU finds applications in various fields, including:

1. Power supply modules for microcontrollers and digital circuits.
2. Battery charging circuits.
3. Automotive electronics.
4. Industrial control systems.
5. LED lighting applications.
6. Portable electronic devices.

Detailed and Complete Alternative Models

Some alternative models to LM2576-5.0BU include:

1. LM2596-5.0: Similar specifications and functionality, but available in different package types.
2. XL4005: Higher output current capability and wider input voltage range.
3. MP2307: Smaller package size and higher efficiency.
4. TPS5430: Integrated synchronous rectification for improved efficiency.

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

In conclusion, the LM2576-5.0BU is a versatile voltage regulator that efficiently converts higher input voltages to a stable 5.0V output. Its wide input voltage range, compact package, and built-in protection features make it suitable for various applications in different fields. However, it is important to consider alternative models based on specific requirements and constraints.