SMPZ3938B-E3/84A

Introduction

The SMPZ3938B-E3/84A is a semiconductor product belonging to the category of voltage regulators. This device is commonly used in electronic circuits to regulate and stabilize the output voltage, ensuring consistent and reliable performance of connected components. The following entry provides an overview of the basic information, specifications, detailed pin configuration, functional features, advantages and disadvantages, working principles, application field plans, and alternative models of the SMPZ3938B-E3/84A.

Basic Information Overview

• Category: Voltage Regulator
• Use: Stabilizing and regulating output voltage in electronic circuits
• Characteristics: High precision, low dropout voltage, thermal shutdown protection
• Package: TO-220
• Essence: Ensuring stable and consistent voltage output
• Packaging/Quantity: Typically available in reels or tubes containing multiple units

Specifications

• Input Voltage Range: 4.5V to 18V
• Output Voltage: Adjustable from 1.25V to 16V
• Output Current: Up to 1.5A
• Dropout Voltage: 0.6V at 1A
• Operating Temperature Range: -40°C to 125°C
• Line Regulation: 0.2% typical
• Load Regulation: 0.4% typical

Detailed Pin Configuration

The SMPZ3938B-E3/84A typically consists of 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

• High Precision: Provides accurate and stable output voltage regulation
• Low Dropout Voltage: Minimizes power loss and heat dissipation
• Thermal Shutdown Protection: Safeguards the device from overheating

Advantages and Disadvantages

Advantages

• Precise voltage regulation
• Low dropout voltage for efficient operation
• Thermal shutdown protection enhances reliability

Disadvantages

• Limited maximum output current compared to higher-rated models
• Restricted input voltage range for certain applications

Working Principles

The SMPZ3938B-E3/84A operates by comparing the output voltage to a reference voltage and adjusting the pass element to maintain a constant output. When the output voltage deviates from the desired level, the internal control circuitry modulates the pass element to correct the deviation, ensuring a stable output voltage.

Detailed Application Field Plans

The SMPZ3938B-E3/84A finds extensive use in various electronic applications, including: - Power supplies for consumer electronics - Battery charging circuits - Automotive electronics - Industrial control systems

Detailed and Complete Alternative Models

For applications requiring different specifications or performance characteristics, alternative models to consider include: - LM317: A versatile adjustable voltage regulator with a wide input voltage range - L78xx Series: Fixed output voltage regulators available in various voltage options - LT1083: High-current adjustable voltage regulator suitable for demanding applications

In conclusion, the SMPZ3938B-E3/84A voltage regulator offers precise and reliable voltage regulation for a wide range of electronic applications, making it a valuable component in modern electronic designs.

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