L79L15ACD

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 -17V
Output Voltage: -15V
Output Current: 100mA
Dropout Voltage: 1.5V (typical)
Line Regulation: 0.2% (typical)
Load Regulation: 0.4% (typical)
Quiescent Current: 5mA (typical)

Detailed Pin Configuration

The L79L15ACD is a three-terminal device with the following pin configuration:

Input (VIN): Connects to the input voltage source.
Ground (GND): Common ground reference.
Output (VOUT): Provides the regulated output voltage.

Functional Features

Voltage Regulation: The L79L15ACD regulates the output voltage to a constant -15V, regardless of changes in the input voltage or load conditions.
Low Dropout: The regulator has a low dropout voltage of 1.5V, allowing it to operate efficiently even when the input voltage is close to the desired output voltage.
Short Circuit Protection: The device includes internal current limiting and thermal shutdown protection, safeguarding against short circuits and excessive temperature.

Advantages and Disadvantages

Advantages: - Simple and easy to use. - Stable and accurate voltage regulation. - Low dropout voltage. - Built-in protection features.

Disadvantages: - Limited output current capability (100mA). - Requires external capacitors for stability.

Working Principles

The L79L15ACD is a linear voltage regulator that uses a series pass transistor to regulate the output voltage. It compares the reference voltage with a fraction of the output voltage and adjusts the pass transistor accordingly to maintain a constant output voltage. The device operates in the negative voltage range, providing a regulated -15V output.

Detailed Application Field Plans

The L79L15ACD is commonly used in various electronic applications requiring a stable -15V power supply. Some typical application fields include:

Audio Amplifiers: Provides a regulated negative voltage for audio amplification circuits.
Instrumentation: Used in test and measurement equipment that requires a negative voltage reference.
Industrial Control Systems: Suitable for powering control circuitry in industrial automation systems.
Telecommunications: Used in telecommunication equipment for voltage regulation purposes.

Detailed and Complete Alternative Models

LM7915: Negative voltage regulator with similar specifications and pin configuration.
MC79L15: Another negative voltage regulator option with comparable characteristics.
UA7915: Integrated circuit offering negative voltage regulation with similar performance.

(Note: This list is not exhaustive and other alternative models may exist.)

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací L79L15ACD v technických řešeních

Sure! Here are 10 common questions and answers related to the application of L79L15ACD in technical solutions:

Q: What is L79L15ACD? A: L79L15ACD is a voltage regulator integrated circuit (IC) that provides a fixed output voltage of -15V.
Q: What is the purpose of using L79L15ACD in technical solutions? A: The purpose of using L79L15ACD is to regulate and stabilize the voltage at -15V in various electronic circuits or systems.
Q: How does L79L15ACD work? A: L79L15ACD works by taking an input voltage, typically higher than -15V, and regulating it down to a stable -15V output voltage.
Q: What is the maximum input voltage that L79L15ACD can handle? A: The maximum input voltage that L79L15ACD can handle is typically around -35V.
Q: Can L79L15ACD be used in both AC and DC applications? A: Yes, L79L15ACD can be used in both AC and DC applications as long as the input voltage falls within its specified range.
Q: Is L79L15ACD suitable for high-power applications? A: No, L79L15ACD is not suitable for high-power applications as it has a limited current handling capability.
Q: Can multiple L79L15ACD ICs be connected in parallel to increase the current capacity? A: Yes, multiple L79L15ACD ICs can be connected in parallel to increase the overall current capacity.
Q: Are there any specific precautions to consider when using L79L15ACD? A: Yes, it is important to provide proper heat sinking for L79L15ACD to prevent overheating and ensure its reliable operation.
Q: Can L79L15ACD be used in automotive applications? A: Yes, L79L15ACD can be used in automotive applications where a regulated -15V supply is required.
Q: Are there any alternative voltage regulators similar to L79L15ACD? A: Yes, there are other voltage regulator ICs available in the market that provide similar functionality, such as LM7915 or MC79L15.

Please note that the answers provided here are general and may vary depending on the specific datasheet and application requirements of L79L15ACD.