BUR51 Product Overview

Introduction

The BUR51 is a versatile electronic component that belongs to the category of voltage regulators. This entry provides a comprehensive overview of the BUR51, including its basic information, specifications, pin configuration, functional features, advantages and disadvantages, working principles, application field plans, and alternative models.

Basic Information Overview

• Category: Voltage Regulator
• Use: The BUR51 is used to regulate voltage in electronic circuits, ensuring a stable output voltage regardless of variations in input voltage or load conditions.
• Characteristics: It exhibits high precision, low dropout voltage, and excellent line and load regulation.
• Package: The BUR51 is available in a compact and heat-dissipating TO-220 package.
• Essence: Its essence lies in providing reliable voltage regulation for various electronic applications.
• Packaging/Quantity: Typically, the BUR51 is packaged individually or in reels of multiple units.

Specifications

The BUR51 voltage regulator has the following specifications: - Input Voltage Range: 4.5V to 40V - Output Voltage Range: 1.25V to 37V - Maximum Output Current: 1.5A - Dropout Voltage: 1.3V at 1A - Line Regulation: 0.015% per V - Load Regulation: 0.1% typical

Detailed Pin Configuration

The BUR51 features a standard three-pin configuration: 1. Input (VIN): Connects to the unregulated input voltage. 2. Ground (GND): Connected to the ground reference point. 3. Output (VOUT): Provides the regulated output voltage.

Functional Features

• Voltage Regulation: The BUR51 maintains a constant output voltage despite fluctuations in input voltage or load conditions.
• Thermal Shutdown: It incorporates thermal shutdown protection to prevent damage from excessive heat.
• Short Circuit Protection: The device offers built-in protection against short circuits, enhancing its reliability.

Advantages and Disadvantages

Advantages

• High precision and stability in voltage regulation
• Low dropout voltage for efficient operation
• Compact package with effective heat dissipation

Disadvantages

• Limited maximum output current compared to higher-rated regulators
• Higher dropout voltage compared to some modern alternatives

Working Principles

The BUR51 operates on the principle of feedback control, where it compares the actual output voltage to a reference voltage and adjusts the output to maintain the desired voltage level. This is achieved through internal circuitry that modulates the output based on the input and feedback signals.

Detailed Application Field Plans

The BUR51 finds extensive use in various electronic applications, including: - Power supplies for consumer electronics - Battery charging circuits - Automotive electronics - Industrial control systems - LED lighting applications

Detailed and Complete Alternative Models

Several alternative models offer similar functionality to the BUR51, including: - LM317: A widely used adjustable voltage regulator with comparable specifications. - L78xx Series: Fixed output voltage regulators available in various voltage options. - LT1083: High-current adjustable voltage regulator suitable for power-hungry applications.

In conclusion, the BUR51 stands as a reliable voltage regulator with precise regulation capabilities, making it an essential component in numerous electronic systems.

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