L79L05ACZ-AP

Product Overview

Category

L79L05ACZ-AP belongs to the category of voltage regulators.

Use

It is commonly used to regulate and stabilize the output voltage in electronic circuits.

Characteristics

• Voltage Regulation: L79L05ACZ-AP provides a regulated output voltage of -5V.
• Package: The product comes in a TO-220 package, which ensures efficient heat dissipation.
• Essence: It is an integrated circuit (IC) that operates as a negative linear voltage regulator.
• Packaging/Quantity: L79L05ACZ-AP is typically sold in reels or tubes containing multiple units.

Specifications

The key specifications of L79L05ACZ-AP are as follows:

• Output Voltage: -5V
• Input Voltage Range: Up to -35V
• Maximum Output Current: 100mA
• Dropout Voltage: 1.7V (typical)
• Line Regulation: 0.2% (typical)
• Load Regulation: 0.4% (typical)
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

L79L05ACZ-AP has three pins, each serving a specific purpose:

1. Input Pin (VIN): This pin is connected to the input voltage source.
2. Ground Pin (GND): It is connected to the ground reference of the circuit.
3. Output Pin (VOUT): The regulated -5V output voltage is obtained from this pin.

Functional Features

• Voltage Regulation: L79L05ACZ-AP maintains a stable -5V output voltage despite variations in the input voltage.
• Short Circuit Protection: The IC includes internal protection mechanisms to prevent damage in case of a short circuit.
• Thermal Shutdown: It incorporates thermal shutdown circuitry to safeguard against excessive heat.

Advantages and Disadvantages

Advantages

• Compact Size: L79L05ACZ-AP is available in a small package, making it suitable for space-constrained applications.
• Easy Integration: Its simple three-pin configuration allows for easy integration into various electronic circuits.
• Cost-Effective: The product offers cost-effective voltage regulation solutions.

Disadvantages

• Limited Output Current: With a maximum output current of 100mA, it may not be suitable for high-power applications.
• Dropout Voltage: The dropout voltage of 1.7V can limit its efficiency in low input voltage scenarios.

Working Principles

L79L05ACZ-AP operates based on the principle of linear voltage regulation. It utilizes a series pass transistor to regulate the output voltage. The internal circuitry compares the output voltage with a reference voltage and adjusts the pass transistor accordingly to maintain a stable -5V output.

Detailed Application Field Plans

L79L05ACZ-AP finds application in various electronic systems where a regulated -5V supply is required. Some common application fields include:

1. Power Supply Units: It can be used in power supply units to provide a stable -5V rail for powering analog or digital components.
2. Audio Amplifiers: L79L05ACZ-AP can be employed in audio amplifiers to generate a negative voltage bias for certain amplifier stages.
3. Instrumentation Systems: It is suitable for instrumentation systems that require a precise and stable negative voltage reference.

Detailed and Complete Alternative Models

There are several alternative models available in the market that offer similar functionality to L79L05ACZ-AP. Some notable alternatives include:

1. LM79L05: Manufactured by Texas Instruments, this IC provides a regulated -5V output with similar specifications.
2. MC79L05: Produced by ON Semiconductor, it is another -5V voltage regulator with comparable characteristics.
3. UA79L05: This IC, manufactured by Fairchild Semiconductor, is a negative linear voltage regulator that also delivers -5V output.

These alternative models can be considered based on specific requirements and availability.

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