L79L08ACD

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Regulator
• Characteristics: Low Dropout, Negative Voltage Regulator
• Package: TO-220
• Essence: This IC regulates the input voltage to a stable negative output voltage.
• Packaging/Quantity: Available in reels of 2,500 units.

Specifications

• Input Voltage Range: -35V to -10V
• Output Voltage: -8V
• Output Current: Up to 100mA
• Dropout Voltage: 1.5V typical at 100mA load
• Quiescent Current: 4mA typical
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The L79L08ACD IC has three pins:

1. Input Pin (IN): Connects to the input voltage source.
2. Ground Pin (GND): Connected to the ground reference.
3. Output Pin (OUT): Provides the regulated negative output voltage.

Functional Features

• Voltage Regulation: The L79L08ACD maintains a stable -8V output voltage regardless of input voltage fluctuations.
• Low Dropout: With a dropout voltage of only 1.5V, this IC can operate efficiently even with low input voltages.
• Short Circuit Protection: The IC includes internal protection against short circuits, preventing damage to the device.
• Thermal Shutdown: In case of excessive temperature, the IC shuts down to prevent overheating and potential damage.

Advantages and Disadvantages

Advantages

• Compact and easy-to-use package (TO-220).
• Wide operating temperature range allows for various applications.
• Internal short circuit protection enhances device reliability.
• Low dropout voltage enables efficient operation.

Disadvantages

• Limited output current capability (up to 100mA).
• Negative voltage regulator, not suitable for positive voltage applications.

Working Principles

The L79L08ACD is a linear voltage regulator that utilizes a negative feedback mechanism. It compares the output voltage with a reference voltage and adjusts the internal circuitry to maintain a stable -8V output. The device uses a pass transistor to regulate the voltage and dissipates excess power as heat.

Detailed Application Field Plans

The L79L08ACD is commonly used in various electronic devices and systems, including:

1. Audio Amplifiers: Provides a stable negative voltage supply for audio amplification circuits.
2. Instrumentation Systems: Used to generate a regulated negative voltage for analog signal conditioning.
3. Automotive Electronics: Suitable for negative voltage requirements in automotive applications.
4. Battery-Powered Devices: Regulates the voltage in battery-powered devices requiring a negative supply.

Detailed and Complete Alternative Models

1. LM79L08: Similar characteristics and pin configuration, available in TO-92 package.
2. MC79L08: Comparable specifications, offered in TO-220 package.
3. UA79L08: Alternative option with similar features, available in TO-92 package.

(Note: These alternative models are provided as examples and may have slight variations in specifications and package options.)

This entry provides an overview of the L79L08ACD voltage regulator, including its basic information, specifications, pin configuration, functional features, advantages, disadvantages, working principles, application field plans, and alternative models.