L79L08ACZ

Product Overview

• Category: Integrated Circuit
• Use: Voltage Regulator
• Characteristics: Low Dropout, Negative Voltage Regulator
• Package: TO-220
• Essence: Linear Regulator
• Packaging/Quantity: Tube/50 pieces

Specifications

• Input Voltage Range: -35V to -10V
• Output Voltage: -8V
• Output Current: 100mA
• Dropout Voltage: 2V
• Line Regulation: 0.04%/V
• Load Regulation: 0.3%
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The L79L08ACZ voltage regulator has three pins:

1. Input (IN): This pin is used to connect the input voltage, typically a negative voltage in the range of -35V to -10V.
2. Ground (GND): This pin is connected to the ground or reference voltage.
3. Output (OUT): The regulated output voltage of -8V is obtained from this pin.

Functional Features

• Low Dropout: The L79L08ACZ has a low dropout voltage of 2V, allowing it to regulate the output voltage even when the input voltage is close to the desired output voltage.
• Negative Voltage Regulation: It provides a regulated negative voltage of -8V, making it suitable for applications that require a negative power supply.
• Stable Output: The voltage regulator ensures a stable output voltage despite variations in the input voltage and load conditions.
• Short Circuit Protection: The device includes internal short circuit protection, preventing damage to the regulator in case of a short circuit on the output side.

Advantages and Disadvantages

Advantages: - Low dropout voltage enables efficient regulation even with small input-output voltage differentials. - Compact TO-220 package allows for easy integration into various electronic circuits. - Internal short circuit protection enhances device reliability.

Disadvantages: - Limited output current of 100mA may not be sufficient for high-power applications. - Negative voltage output restricts its use to specific applications requiring negative power supplies.

Working Principles

The L79L08ACZ is a linear voltage regulator that uses a series pass transistor to regulate the output voltage. It operates by comparing the reference voltage with a fraction of the output voltage, adjusting the pass transistor's resistance to maintain a stable output voltage. The dropout voltage is minimized through the use of a low saturation voltage transistor.

Detailed Application Field Plans

The L79L08ACZ is commonly used in various electronic devices and systems, including:

1. Audio Amplifiers: It can provide a stable negative voltage supply for audio amplifiers, ensuring accurate signal amplification.
2. Instrumentation Systems: The voltage regulator is suitable for powering analog sensors and measurement circuits in instrumentation systems.
3. Automotive Electronics: It finds application in automotive electronics, such as dashboard displays and control modules, where a regulated negative voltage is required.
4. Industrial Control Systems: The L79L08ACZ can be used in industrial control systems to provide a reliable negative power supply for microcontrollers and other components.

Detailed and Complete Alternative Models

1. LM79L08: This is a similar negative voltage regulator offered by Texas Instruments. It has comparable specifications and pin configuration to the L79L08ACZ.
2. MC79L08: Manufactured by ON Semiconductor, this negative voltage regulator provides -8V output with similar characteristics to the L79L08ACZ.
3. UA79L08: Another alternative from Fairchild Semiconductor, offering -8V output voltage regulation with similar features to the L79L08ACZ.

(Note: The above alternative models are provided for reference and may have slight variations in specifications and package type.)

In conclusion, the L79L08ACZ is a low dropout negative voltage regulator that provides a stable -8V output. It is commonly used in various applications requiring a regulated negative power supply. With its compact package and functional features, it offers reliable performance in electronic systems.