LM2576-5.0BT

Product Overview

Category

The LM2576-5.0BT 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 3A
• Efficiency: Up to 92%
• Switching Frequency: 52 kHz
• Operating Temperature Range: -40°C to 125°C
• Package Type: TO-220
• Pin Count: 5

Packaging/Quantity

The LM2576-5.0BT is typically available in a TO-220 package. It is commonly sold in reels or tubes, with quantities varying depending on the supplier.

Specifications

• Input Voltage Range: 4.75V to 40V
• Output Voltage: 5.0V ±4%
• Maximum Output Current: 3A
• Line Regulation: 0.5% (Typical)
• Load Regulation: 0.5% (Typical)
• Switching Frequency: 52 kHz
• Efficiency: Up to 92%
• Thermal Shutdown Protection
• Short Circuit Protection
• Soft Start Function

Detailed Pin Configuration

The LM2576-5.0BT has five pins: 1. VIN (Pin 1): Input voltage pin. 2. GND (Pin 2): Ground reference pin. 3. FB (Pin 3): Feedback pin for output voltage regulation. 4. SW (Pin 4): Switching pin connected to the inductor. 5. VOUT (Pin 5): Output voltage pin.

Functional Features

• Wide input voltage range allows for versatile applications.
• High efficiency ensures minimal power loss during voltage regulation.
• Thermal shutdown protection prevents damage due to excessive temperature.
• Short circuit protection safeguards the circuit from overcurrent conditions.
• Soft start function reduces inrush current during startup.

Advantages

• Compact TO-220 package allows for easy integration into various electronic systems.
• Wide input voltage range makes it suitable for a wide range of applications.
• High efficiency helps conserve power and reduce heat dissipation.
• Built-in protection features enhance reliability and prevent damage to the circuit.

Disadvantages

• The switching frequency of 52 kHz may introduce audible noise in some applications.
• Limited output current of up to 3A may not be sufficient for high-power applications.

Working Principles

The LM2576-5.0BT is a step-down (buck) voltage regulator that uses a switching converter topology. It operates by rapidly switching an internal transistor on and off to control the energy flow from the input to the output. This switching action, combined with an inductor and capacitors, efficiently steps down the input voltage to the desired output voltage level.

Detailed Application Field Plans

The LM2576-5.0BT can be used in various applications, including: 1. Power supplies for microcontrollers and other low-power digital circuits. 2. Battery charging circuits. 3. Automotive electronics. 4. Industrial automation systems. 5. LED lighting applications. 6. Portable electronic devices.

Detailed and Complete Alternative Models

Some alternative models to the LM2576-5.0BT include: - LM2596-5.0: Similar specifications but available in a different package (TO-263). - LM317: Adjustable voltage regulator with higher output current capability. - LT1083: Higher current linear voltage regulator with adjustable output voltage.

In conclusion, the LM2576-5.0BT is a versatile voltage regulator with a wide input voltage range, high efficiency, and built-in protection features. Its compact package and reliable performance make it suitable for various electronic applications, ranging from low-power digital circuits to automotive electronics and LED lighting systems.