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L79L15ACZ
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L79L15ACZ

Product Overview

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

Specifications

  • Input Voltage Range: -35V to -17V
  • Output Voltage: -15V
  • Output Current: 100mA
  • Dropout Voltage: 1.7V (typical)
  • Line Regulation: 0.2% (typical)
  • Load Regulation: 0.4% (typical)
  • Quiescent Current: 5mA (typical)

Detailed Pin Configuration

The L79L15ACZ has three pins:

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

Functional Features

  • Voltage Regulation: The L79L15ACZ regulates the output voltage to a constant -15V, regardless of input voltage fluctuations.
  • Low Dropout: With a dropout voltage of only 1.7V, this regulator can operate with a small voltage difference between the input and output.
  • Short Circuit Protection: The IC includes built-in protection against short circuits, preventing damage to the device.
  • Thermal Overload Protection: The L79L15ACZ is designed to shut down in case of excessive temperature, protecting itself from overheating.

Advantages and Disadvantages

Advantages: - Simple and easy to use. - Reliable voltage regulation. - Built-in protection features. - Suitable for low-power applications.

Disadvantages: - Limited output current capability. - Requires external capacitors for stability.

Working Principles

The L79L15ACZ is a linear voltage regulator that uses a series pass transistor to regulate the output voltage. It compares the reference voltage with the feedback voltage and adjusts the pass transistor accordingly to maintain a constant -15V output.

Detailed Application Field Plans

The L79L15ACZ is commonly used in various electronic devices and applications, including:

  1. Power Supplies: It can be used as a voltage regulator in power supply circuits to provide a stable -15V output.
  2. Audio Amplifiers: The IC can be employed in audio amplifiers to generate a regulated negative voltage required for biasing or powering specific components.
  3. Instrumentation: It finds application in instrumentation circuits where a precise and stable negative voltage is necessary.

Detailed and Complete Alternative Models

Some alternative models that can be considered as alternatives to the L79L15ACZ are:

  1. LM337: Negative voltage regulator with adjustable output voltage.
  2. LT1054: Negative voltage converter capable of generating negative voltages from positive input sources.
  3. ICL7660: Voltage converter that can generate both positive and negative voltages from a single positive input source.

These alternative models offer similar functionality but may have different specifications and package options.

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技術ソリューションにおける L79L15ACZ の適用に関連する 10 件の一般的な質問と回答をリストします。

Sure! Here are 10 common questions and answers related to the application of L79L15ACZ in technical solutions:

  1. Q: What is L79L15ACZ? A: L79L15ACZ is a voltage regulator IC that provides a fixed output voltage of -15V.

  2. Q: What is the input voltage range for L79L15ACZ? A: The input voltage range for L79L15ACZ is typically between -35V and -20V.

  3. Q: What is the maximum output current of L79L15ACZ? A: The maximum output current of L79L15ACZ is 100mA.

  4. Q: Can L79L15ACZ be used in both AC and DC applications? A: Yes, L79L15ACZ can be used in both AC and DC applications.

  5. Q: Is L79L15ACZ suitable for low-power applications? A: Yes, L79L15ACZ is commonly used in low-power applications where a stable -15V supply is required.

  6. Q: Does L79L15ACZ require any external components for operation? A: Yes, L79L15ACZ requires at least two external capacitors for stability and filtering purposes.

  7. Q: What is the typical dropout voltage of L79L15ACZ? A: The typical dropout voltage of L79L15ACZ is around 2V.

  8. Q: Can L79L15ACZ handle short-circuit conditions? A: No, L79L15ACZ does not have built-in short-circuit protection. External measures should be taken to prevent short-circuits.

  9. Q: Can L79L15ACZ operate in high-temperature environments? A: Yes, L79L15ACZ has a wide operating temperature range of -40°C to 125°C.

  10. Q: What are some common applications of L79L15ACZ? A: L79L15ACZ is commonly used in audio amplifiers, industrial control systems, and other electronic devices that require a stable -15V supply.

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