L7805CDT-TR

Overview

Category: Integrated Circuit (IC)

Use: Voltage Regulator

Characteristics: - Fixed Output Voltage: 5V - Maximum Output Current: 1.5A - Input Voltage Range: 7V to 35V - Low Dropout Voltage: 2V - Thermal Overload Protection - Short Circuit Protection

Package: DPAK (TO-252), Surface Mount

Essence: The L7805CDT-TR is a voltage regulator IC that provides a fixed 5V output voltage from a higher input voltage source.

Packaging/Quantity: The L7805CDT-TR is available in tape and reel packaging, with 2,500 units per reel.

Specifications

• Output Voltage: 5V ±4%
• Output Current: Up to 1.5A
• Input Voltage Range: 7V to 35V
• Dropout Voltage: 2V (typical)
• Quiescent Current: 6mA (typical)
• Line Regulation: 0.04% (typical)
• Load Regulation: 0.1% (typical)
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The L7805CDT-TR has three pins:

1. Input Pin (VIN): Connects to the input voltage source.
2. Ground Pin (GND): Connected to the ground reference.
3. Output Pin (VOUT): Provides the regulated 5V output.

Functional Features

• Voltage Regulation: The L7805CDT-TR maintains a constant 5V output voltage regardless of variations in the input voltage or load conditions.
• Thermal Overload Protection: The IC includes built-in thermal shutdown circuitry to prevent damage due to excessive heat.
• Short Circuit Protection: In the event of a short circuit, the L7805CDT-TR limits the output current to protect itself and the connected components.

Advantages and Disadvantages

Advantages: - Easy to use and integrate into electronic circuits. - Stable and reliable voltage regulation. - Wide input voltage range. - Thermal and short circuit protection enhance safety.

Disadvantages: - Fixed output voltage may not be suitable for all applications. - Dropout voltage of 2V may limit efficiency in low voltage applications.

Working Principles

The L7805CDT-TR is a linear voltage regulator that uses a series pass transistor to regulate the output voltage. It compares the output voltage with a reference voltage and adjusts the pass transistor accordingly to maintain a constant 5V output. The excess voltage is dissipated as heat.

Detailed Application Field Plans

The L7805CDT-TR is commonly used in various electronic devices and applications, including: 1. Power supplies for microcontrollers, sensors, and other digital components. 2. Battery charging circuits. 3. Audio amplifiers and preamplifiers. 4. LED lighting systems. 5. Automotive electronics. 6. Industrial control systems.

Detailed and Complete Alternative Models

1. LM7805: Similar specifications and pin configuration, available in different package options.
2. MC7805: Equivalent performance, available in through-hole and surface mount packages.
3. UA7805: Comparable characteristics, widely used in consumer electronics.

These alternative models can be considered based on specific requirements and availability.

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