SPX3819S-L-3-3

Introduction

The SPX3819S-L-3-3 is a voltage regulator belonging to the category of low-dropout (LDO) linear regulators. It is commonly used to provide a stable output voltage for various electronic devices and circuits. This entry provides an overview of the SPX3819S-L-3-3, 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: Providing stable output voltage
• Characteristics: Low dropout, high accuracy, low quiescent current
• Package: SOT-223
• Essence: Regulating input voltage to a stable output voltage
• Packaging/Quantity: Tape & Reel, 2500 units per reel

Specifications

• Input Voltage Range: 4V to 16V
• Output Voltage: 3.3V
• Output Current: 500mA
• Dropout Voltage: 340mV at 500mA
• Quiescent Current: 75µA
• Line Regulation: 0.2%
• Load Regulation: 1.5%

Detailed Pin Configuration

The SPX3819S-L-3-3 has a standard SOT-223 package with four pins: 1. VIN: Input voltage 2. GND: Ground 3. NC: No connection 4. VOUT: Output voltage

Functional Features

• Low Dropout: Allows operation with small voltage differentials between input and output
• High Accuracy: Provides precise output voltage regulation
• Low Quiescent Current: Minimizes power consumption in standby mode

Advantages and Disadvantages

Advantages

• Stable output voltage even with low input voltage
• High accuracy and low output noise
• Low power consumption in standby mode

Disadvantages

• Limited maximum output current compared to other regulators
• Higher dropout voltage than some competing models

Working Principles

The SPX3819S-L-3-3 uses a precision bandgap reference and error amplifier to compare the output voltage to a fixed 1.25V reference. The feedback loop adjusts the pass transistor to maintain the desired output voltage, providing a stable regulated output.

Detailed Application Field Plans

The SPX3819S-L-3-3 is suitable for various applications requiring a stable 3.3V supply, such as: - Battery-powered devices - Portable electronics - Embedded systems - IoT devices - Automotive electronics

Detailed and Complete Alternative Models

Some alternative models to the SPX3819S-L-3-3 include: - LM1117-3.3 - MCP1703-3302E - AP2112K-3.3

In conclusion, the SPX3819S-L-3-3 is a reliable voltage regulator with low dropout, high accuracy, and low quiescent current, making it suitable for a wide range of electronic applications.

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