LM2576TV-5G

Product Overview

Category

The LM2576TV-5G belongs to the category of voltage regulators.

Use

It is primarily used for regulating voltage in electronic circuits.

Characteristics

• Input Voltage Range: 4.75V to 40V
• Output Voltage Range: 1.23V to 37V
• Output Current: Up to 3A
• Efficiency: Up to 92%
• Switching Frequency: 52 kHz
• Operating Temperature Range: -40°C to +125°C

Package

The LM2576TV-5G comes in a TO-220 package, which provides thermal efficiency and easy mounting on a heat sink.

Essence

The essence of LM2576TV-5G lies in its ability to efficiently regulate voltage with high precision and low power dissipation.

Packaging/Quantity

The LM2576TV-5G is typically packaged in reels or tubes, with a quantity of 50 units per reel/tube.

Specifications

• Input Voltage: 4.75V to 40V
• Output Voltage: 1.23V to 37V
• Output Current: Up to 3A
• Dropout Voltage: 1.2V (typical)
• Line Regulation: 0.5% (typical)
• Load Regulation: 0.5% (typical)
• Ripple Rejection: 80 dB (typical)
• Switching Frequency: 52 kHz
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The LM2576TV-5G 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 versatile applications.
• High efficiency ensures minimal power loss.
• Adjustable output voltage provides flexibility.
• Overcurrent and thermal protection safeguards the circuit.
• Soft-start function prevents excessive inrush current.

Advantages and Disadvantages

Advantages

• High efficiency leads to energy savings.
• Wide input voltage range enhances compatibility.
• Compact size facilitates easy integration into circuits.
• Overcurrent and thermal protection ensure reliability.

Disadvantages

• Limited output current may restrict certain high-power applications.
• Switching frequency may introduce electromagnetic interference in sensitive systems.

Working Principles

The LM2576TV-5G 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 average output voltage. The feedback mechanism adjusts the duty cycle of the switching signal to maintain the desired output voltage.

Detailed Application Field Plans

The LM2576TV-5G finds extensive application in various fields, including:

1. Power supply units for electronic devices
2. Battery charging circuits
3. Automotive electronics
4. Industrial control systems
5. LED lighting systems
6. Telecommunications equipment

Detailed and Complete Alternative Models

1. LM2596SX-5.0/NOPB: Similar specifications with adjustable output voltage.
2. LM317T: Linear voltage regulator with adjustable output voltage.
3. LT1084CP-5: High-current linear voltage regulator with fixed output voltage.
4. TPS5430DDAR: Synchronous buck converter with adjustable output voltage.

These alternative models offer similar functionality and can be considered as substitutes for the LM2576TV-5G in specific applications.

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