LM2576-12WT

Product Overview

Category: Voltage Regulator
Use: Step-down switching regulator
Characteristics: Efficient, compact, and reliable
Package: TO-220
Essence: LM2576-12WT is a voltage regulator that converts higher input voltage to a lower output voltage.
Packaging/Quantity: Available in tape and reel packaging with 1000 units per reel.

Specifications

• Input Voltage Range: 4.5V to 40V
• Output Voltage: 12V
• Output Current: Up to 3A
• Efficiency: Up to 92%
• Switching Frequency: 52 kHz
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The LM2576-12WT 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.
• Compact TO-220 package enables easy integration into various electronic devices.
• Built-in thermal shutdown and current limit protection enhance reliability.

Advantages

• Provides stable and regulated 12V output voltage.
• High efficiency reduces energy consumption.
• Compact size saves space in electronic designs.
• Reliable performance due to built-in protection features.

Disadvantages

• Limited output current may not be suitable for high-power applications.
• Requires external components for proper operation.
• Higher cost compared to linear voltage regulators.

Working Principles

LM2576-12WT utilizes a step-down switching regulator topology to convert higher input voltage to a lower, regulated 12V output. It employs a pulse-width modulation (PWM) control scheme to efficiently regulate the output voltage. The feedback pin (FB) monitors the output voltage and adjusts the duty cycle of the internal switch to maintain a stable 12V output.

Detailed Application Field Plans

The LM2576-12WT is widely used in various applications, including:

1. Power supply modules for industrial equipment.
2. Automotive electronics, such as car audio systems and LED lighting.
3. Battery charging circuits for portable devices.
4. Distributed power systems in telecommunications.
5. Solar-powered systems and renewable energy applications.

Detailed and Complete Alternative Models

1. LM2596-12: Similar functionality with adjustable output voltage.
2. LM317: Linear voltage regulator with adjustable output voltage.
3. LT1084: High-current linear voltage regulator with fixed output voltage.

These alternative models provide similar voltage regulation capabilities but may have different features or specifications that suit specific application requirements.

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