SPX3940M3-L-3-3/TR

Introduction

The SPX3940M3-L-3-3/TR is a voltage regulator belonging to the category of linear regulators. It is commonly used in electronic circuits to provide a stable and regulated output voltage. This entry provides an overview of the basic information, specifications, pin configuration, functional features, advantages and disadvantages, working principles, application field plans, and alternative models of the SPX3940M3-L-3-3/TR.

Basic Information Overview

• Category: Linear Regulator
• Use: Voltage Regulation
• Characteristics: Provides stable and regulated output voltage, low dropout voltage, high accuracy
• Package: SOT-223
• Essence: Regulates input voltage to a specified output voltage
• Packaging/Quantity: Tape & Reel, 3000 units per reel

Specifications

• Input Voltage: Up to 30V
• Output Voltage: 3.3V
• Output Current: 1A
• Dropout Voltage: 0.5V at 1A
• Line Regulation: 0.2% typical
• Load Regulation: 0.4% typical
• Operating Temperature Range: -40°C to 125°C

Detailed Pin Configuration

The SPX3940M3-L-3-3/TR has a standard SOT-223 package with three pins: 1. Input (VIN): Connects to the input voltage source 2. Ground (GND): Connected to the ground reference 3. Output (VOUT): Provides the regulated output voltage

Functional Features

• Low Dropout Voltage: Allows for regulation with small voltage differentials
• Thermal Shutdown Protection: Prevents damage from excessive heat
• Short Circuit Protection: Safeguards the regulator and connected components
• Reverse Polarity Protection: Protects against reverse connection of input voltage

Advantages and Disadvantages

Advantages

• High accuracy and stability
• Low dropout voltage enables efficient regulation
• Built-in protection features enhance reliability

Disadvantages

• Higher power dissipation compared to switching regulators
• Limited efficiency for large voltage differentials

Working Principles

The SPX3940M3-L-3-3/TR operates by comparing the output voltage to a reference voltage and adjusting the pass transistor to maintain a constant output voltage. When the input voltage exceeds the required output voltage plus the dropout voltage, the regulator maintains a stable output by adjusting the pass element.

Detailed Application Field Plans

The SPX3940M3-L-3-3/TR is widely used in various applications such as: - Battery-powered devices - Portable electronics - Automotive systems - Industrial control systems - Telecommunication equipment

Detailed and Complete Alternative Models

Some alternative models to the SPX3940M3-L-3-3/TR include: - LM1117 - LT1086 - L78xx series - NCP1117

In conclusion, the SPX3940M3-L-3-3/TR is a reliable linear regulator with precise voltage regulation capabilities, making it suitable for a wide range of electronic applications.

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