L7805CDT

Product Overview

• Category: Integrated Circuit
• Use: Voltage Regulator
• Characteristics: Linear, Fixed Output Voltage, Positive Polarity
• Package: TO-220
• Essence: 3-Terminal Voltage Regulator
• Packaging/Quantity: Tape and Reel, 2,500 units per reel

Specifications

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

Pin Configuration

The L7805CDT has 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

• Provides a stable 5V output voltage regardless of input variations.
• Built-in thermal overload protection prevents overheating.
• Short-circuit protection safeguards against excessive current.
• Internal current limiting protects the device from damage.
• Low quiescent current consumption for energy efficiency.

Advantages and Disadvantages

Advantages

• Simple and easy to use.
• Cost-effective solution for voltage regulation.
• Wide input voltage range allows for versatile applications.
• Reliable and robust design ensures long-term operation.
• Suitable for various electronic devices and circuits.

Disadvantages

• Generates significant heat during operation, requiring proper heat dissipation.
• Limited output current compared to other voltage regulators.
• Not suitable for applications requiring high precision voltage regulation.

Working Principles

The L7805CDT is a linear voltage regulator that uses a series pass transistor to regulate the output voltage. It operates by comparing the reference voltage with the feedback voltage, adjusting the pass transistor's resistance to maintain a constant output voltage. The excess voltage is dissipated as heat.

Detailed Application Field Plans

The L7805CDT is widely used in various electronic devices and circuits, including:

1. Power supplies for microcontrollers and digital ICs.
2. Battery chargers and power adapters.
3. Audio amplifiers and preamplifiers.
4. LED lighting systems.
5. Automotive electronics.
6. Industrial control systems.
7. Robotics and automation.

Detailed and Complete Alternative Models

• LM7805: Similar specifications and pin configuration, available in different packages.
• MC7805: Equivalent performance, alternative manufacturer.
• UA7805: Comparable characteristics, suitable for low-power applications.
• NJM7805: Low dropout voltage version, ideal for battery-powered devices.

(Note: This list is not exhaustive and other alternative models may exist.)

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