AN78L08

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Regulator
• Characteristics: Low dropout voltage, high output current capability
• Package: TO-92 (Through-Hole)
• Essence: Linear voltage regulator
• Packaging/Quantity: Typically sold in reels or tubes containing multiple units

Specifications

• Input Voltage Range: 10V to 35V
• Output Voltage: +8V
• Output Current: Up to 100mA
• Dropout Voltage: 2V (maximum)
• Quiescent Current: 5mA (maximum)

Detailed Pin Configuration

The AN78L08 IC has three pins: 1. Vin (Input): Connects to the input voltage source. 2. GND (Ground): Connected to the ground reference. 3. Vout (Output): Provides the regulated +8V output.

Functional Features

• Voltage Regulation: The AN78L08 regulates the input voltage to a stable +8V output.
• Low Dropout Voltage: It operates with a low dropout voltage, ensuring efficient power conversion even when the input voltage is close to the desired output voltage.
• High Output Current Capability: The IC can deliver up to 100mA of current to power various electronic components.

Advantages and Disadvantages

Advantages: - Compact Size: The TO-92 package makes it suitable for space-constrained applications. - Easy to Use: Requires minimal external components for operation. - Cost-Effective: Offers a cost-effective solution for voltage regulation needs.

Disadvantages: - Limited Output Current: The maximum output current of 100mA may not be sufficient for high-power applications. - Heat Dissipation: As a linear regulator, it dissipates excess power as heat, requiring proper thermal management.

Working Principles

The AN78L08 utilizes a series pass transistor to regulate the output voltage. It compares the reference voltage with the feedback voltage and adjusts the pass transistor's resistance to maintain a stable +8V output.

Detailed Application Field Plans

The AN78L08 finds applications in various electronic devices, including: 1. Consumer Electronics: Used in audio/video equipment, set-top boxes, and portable devices. 2. Automotive Electronics: Provides regulated power for car audio systems, lighting controls, and other automotive applications. 3. Industrial Control Systems: Used in control panels, sensors, and actuators requiring a stable power supply.

Detailed and Complete Alternative Models

• LM7808: A popular alternative from Texas Instruments with similar specifications and pin configuration.
• MC78L08: Another alternative from ON Semiconductor offering comparable performance.

Note: The above alternatives are just examples; there are several other manufacturers offering similar voltage regulators.

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