L7808CD2T

Basic Information Overview

• Category: Voltage Regulator
• Use: To regulate and stabilize the output voltage in electronic circuits
• Characteristics: Fixed output voltage of 8V, high current capability, low dropout voltage
• Package: TO-220
• Essence: Linear voltage regulator
• Packaging/Quantity: Tape and reel packaging, quantity varies depending on supplier

Specifications

• Output Voltage: 8V
• Input Voltage Range: 10V to 35V
• Dropout Voltage: 2V (typical)
• Output Current: Up to 1.5A
• Line Regulation: 0.04% (typical)
• Load Regulation: 0.3% (typical)
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The L7808CD2T 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

• Voltage Regulation: The L7808CD2T maintains a constant output voltage of 8V, regardless of changes in the input voltage or load conditions.
• Thermal Protection: The device includes built-in thermal shutdown protection to prevent damage from excessive heat.
• Short Circuit Protection: It has internal current limiting circuitry that protects against short circuits and overloads.
• Low Dropout Voltage: The dropout voltage is as low as 2V, minimizing power dissipation and improving efficiency.

Advantages and Disadvantages

Advantages: - Easy to use and implement in various electronic circuits. - High current capability allows it to handle demanding applications. - Stable and reliable output voltage regulation. - Wide operating temperature range for versatility.

Disadvantages: - Linear regulators like L7808CD2T dissipate excess power as heat, reducing overall efficiency. - Limited input voltage range compared to switching regulators.

Working Principles

The L7808CD2T 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 output voltage of 8V. The excess voltage is dissipated as heat.

Detailed Application Field Plans

The L7808CD2T is commonly used in various electronic applications, including: 1. Power Supplies: It can be used to provide a stable 8V output for powering microcontrollers, sensors, and other components. 2. Automotive Electronics: It is suitable for automotive applications requiring regulated voltage supply, such as dashboard displays, lighting systems, and audio equipment. 3. Industrial Control Systems: The L7808CD2T can be utilized in industrial control systems to regulate voltage for motor drives, PLCs, and other control circuitry.

Detailed and Complete Alternative Models

Some alternative models to the L7808CD2T include: - LM7808: A popular 8V linear voltage regulator from Texas Instruments. - UA7808: Another 8V linear voltage regulator from Fairchild Semiconductor. - MC7808: An 8V linear voltage regulator from ON Semiconductor.

These alternatives offer similar functionality and characteristics to the L7808CD2T and can be used as replacements depending on specific requirements.

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