L78M05CDT-TR

Introduction

The L78M05CDT-TR is a voltage regulator belonging to the category of linear voltage regulators. It is commonly used to provide a stable 5V output voltage from a higher input voltage source. This component is widely utilized in various electronic devices and circuits due to its reliable performance and ease of use.

Basic Information Overview

• Category: Linear Voltage Regulator
• Use: Provides stable 5V output voltage from a higher input voltage source
• Characteristics: High accuracy, low dropout voltage, thermal shutdown protection
• Package: DPAK (TO-252)
• Essence: Regulates input voltage to ensure a constant 5V output
• Packaging/Quantity: Typically supplied in reels or tubes, quantity varies based on manufacturer's specifications

Specifications

• Input Voltage Range: Up to 35V
• Output Voltage: 5V
• Output Current: Up to 500mA
• Dropout Voltage: 2V (typical) at 500mA load
• Operating Temperature Range: -40°C to 125°C
• Line Regulation: 0.3% (typical)
• Load Regulation: 0.4% (typical)

Detailed Pin Configuration

The L78M05CDT-TR typically has three pins: 1. Input (VIN): Connects to the higher input voltage source 2. Ground (GND): Connected to the ground reference 3. Output (VOUT): Provides the regulated 5V output

Functional Features

• Voltage Regulation: Maintains a constant 5V output despite variations in the input voltage
• Thermal Shutdown Protection: Safeguards the device from overheating by shutting down when the temperature exceeds safe limits
• Short Circuit Protection: Protects the regulator from damage in case of a short circuit condition

Advantages and Disadvantages

Advantages

• Simple to use
• Provides stable output voltage
• Thermal and short circuit protection enhance reliability

Disadvantages

• Limited output current compared to other types of voltage regulators
• Higher dropout voltage may not be suitable for low voltage applications

Working Principles

The L78M05CDT-TR operates on the principle of linear regulation, where it uses a series pass transistor to regulate the output voltage. When the input voltage exceeds 5V, the internal circuitry adjusts the pass transistor to maintain a steady 5V output. The thermal shutdown and short circuit protection features further ensure safe and reliable operation.

Detailed Application Field Plans

The L78M05CDT-TR finds extensive use in various applications, including: - Powering microcontrollers and digital ICs - Providing stable voltage supply for analog circuits - Voltage regulation in consumer electronics and industrial equipment

Detailed and Complete Alternative Models

Some alternative models to the L78M05CDT-TR include: - LM7805: A widely used 5V linear voltage regulator with similar characteristics - AMS1117-5.0: Low dropout 5V regulator suitable for low voltage applications - NCP1117: Adjustable output voltage regulator with comparable package and characteristics

In conclusion, the L78M05CDT-TR is a reliable linear voltage regulator that provides stable 5V output voltage, making it an essential component in various electronic systems and circuits.

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