SA78HE3/54 Product Overview

Introduction

SA78HE3/54 is a versatile electronic component that belongs to the category of semiconductor devices. This product is widely used in various electronic applications due to its unique characteristics and functional features.

Basic Information Overview

• Category: Semiconductor Device
• Use: Electronic circuitry, voltage regulation
• Characteristics: High efficiency, low power consumption, compact size
• Package: TO-220AB
• Essence: Voltage regulator
• Packaging/Quantity: Typically sold in reels or tubes containing multiple units

Specifications

• Input Voltage Range: 4V to 40V
• Output Voltage Range: 1.25V to 37V
• Maximum Output Current: 3A
• Operating Temperature Range: -40°C to 125°C
• Package Type: TO-220AB

Detailed Pin Configuration

The SA78HE3/54 package 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

• Voltage Regulation: Maintains a stable output voltage despite variations in the input voltage
• Overcurrent Protection: Safeguards the circuit from excessive current flow
• Thermal Shutdown: Prevents overheating by shutting down the device at high temperatures

Advantages and Disadvantages

Advantages

• High efficiency
• Wide input voltage range
• Overcurrent protection
• Compact size

Disadvantages

• Limited maximum output current
• Requires heat sink for high-power applications

Working Principles

SA78HE3/54 operates based on the principle of linear voltage regulation. It uses a feedback mechanism to adjust the output voltage and maintain a stable level regardless of fluctuations in the input voltage.

Detailed Application Field Plans

This product finds extensive use in various electronic systems, including: - Power supplies - Battery charging circuits - Automotive electronics - Industrial control systems

Detailed and Complete Alternative Models

• LM317: Similar voltage regulator with adjustable output
• L7805CV: Fixed 5V voltage regulator with higher output current capacity
• LM2940: Low dropout voltage regulator suitable for battery-powered applications

In conclusion, SA78HE3/54 is a reliable semiconductor device that offers efficient voltage regulation and finds widespread application in diverse electronic systems.

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