A1221EUA-T Product Overview

Introduction

The A1221EUA-T is a versatile electronic component that belongs to the category of voltage regulators. This product is widely used in various electronic devices and systems to regulate and stabilize voltage levels, ensuring consistent and reliable performance.

Basic Information Overview

• Category: Voltage Regulator
• Use: Stabilizing and regulating voltage levels in electronic circuits
• Characteristics: High precision, low dropout voltage, thermal shutdown protection
• Package: TO-220-3
• Essence: Ensuring stable voltage supply for electronic components
• Packaging/Quantity: Typically available in reels or tubes, quantity varies based on supplier

Specifications

• Input Voltage Range: 4V to 26V
• Output Voltage Range: 1.25V to 20V
• Output Current: Up to 1A
• Dropout Voltage: 0.5V at 1A
• Operating Temperature Range: -40°C to 125°C

Detailed Pin Configuration

The A1221EUA-T typically features 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 regulator from overheating

Advantages and Disadvantages

Advantages

• Reliable voltage regulation
• Compact package size
• Wide input voltage range

Disadvantages

• Limited maximum output current
• Requires proper heat dissipation in high-power applications

Working Principles

The A1221EUA-T operates by comparing the output voltage to a reference voltage and adjusting the internal circuitry to maintain a constant output voltage despite changes in the input voltage or load conditions. It utilizes feedback control to achieve precise regulation.

Detailed Application Field Plans

The A1221EUA-T finds extensive use in various applications, including: - Battery-powered devices - Portable electronics - Automotive systems - Industrial control systems

Detailed and Complete Alternative Models

• LM317: Similar adjustable voltage regulator with higher output current capability
• LM7805: Fixed 5V voltage regulator suitable for many applications
• LT1086: Low dropout positive adjustable voltage regulator with higher output current capacity

In conclusion, the A1221EUA-T voltage regulator offers reliable and precise voltage regulation for a wide range of electronic applications, making it an essential component in modern electronic designs.

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