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L79L15ACUTR
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L79L15ACUTR

Product Overview

  • Category: Voltage Regulator
  • Use: To regulate and stabilize the output voltage in electronic circuits
  • Characteristics:
    • Low dropout voltage
    • High output current capability
    • Thermal overload protection
    • Short-circuit protection
  • Package: TO-220, DPAK, or D²PAK
  • Essence: Integrated circuit voltage regulator
  • Packaging/Quantity: Available in reels or tubes, quantity depends on manufacturer's packaging

Specifications

  • Input Voltage: Up to 35V
  • Output Voltage: -15V
  • Output Current: Up to 100mA
  • Dropout Voltage: Typically 1.7V at 100mA
  • Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The L79L15ACUTR voltage regulator has three pins:

  1. Input (VIN): Connects to the input voltage source.
  2. Ground (GND): Connected to the ground reference of the circuit.
  3. Output (VOUT): Provides the regulated -15V output voltage.

Functional Features

  • Voltage Regulation: The L79L15ACUTR maintains a stable -15V output voltage regardless of variations in the input voltage or load conditions.
  • Low Dropout Voltage: The regulator can operate with a small voltage difference between the input and output, minimizing power dissipation.
  • Thermal Overload Protection: Built-in protection mechanism that shuts down the regulator if it exceeds the safe operating temperature range.
  • Short-Circuit Protection: Safeguards the regulator against excessive current flow due to a short circuit, preventing damage to the device.

Advantages and Disadvantages

Advantages: - Reliable voltage regulation - Low dropout voltage - Thermal and short-circuit protection - Wide operating temperature range

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

Working Principles

The L79L15ACUTR 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 L79L15ACUTR is commonly used in various electronic applications, including:

  1. Power Supply Units (PSUs)
  2. Audio Amplifiers
  3. Industrial Control Systems
  4. Automotive Electronics
  5. Battery Charging Circuits

Detailed and Complete Alternative Models

  1. LM7915: Similar characteristics and pin configuration, available in different package options.
  2. MC79L15: Equivalent voltage regulator with comparable specifications and features.
  3. UA7915: Alternative model with similar functionality and pinout.

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

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací L79L15ACUTR v technických řešeních

Sure! Here are 10 common questions and answers related to the application of L79L15ACUTR in technical solutions:

  1. Q: What is L79L15ACUTR? A: L79L15ACUTR is a voltage regulator IC that provides a fixed output voltage of -15V.

  2. Q: What is the input voltage range for L79L15ACUTR? A: The input voltage range for L79L15ACUTR is typically between -35V and -20V.

  3. Q: What is the maximum output current of L79L15ACUTR? A: The maximum output current of L79L15ACUTR is 100mA.

  4. Q: Can L79L15ACUTR be used in both AC and DC applications? A: Yes, L79L15ACUTR can be used in both AC and DC applications.

  5. Q: Is L79L15ACUTR suitable for low-power applications? A: Yes, L79L15ACUTR is commonly used in low-power applications where a stable -15V supply is required.

  6. Q: Does L79L15ACUTR require any external components for operation? A: Yes, L79L15ACUTR requires input and output capacitors for stability and noise filtering.

  7. Q: What is the typical dropout voltage of L79L15ACUTR? A: The typical dropout voltage of L79L15ACUTR is around 2V.

  8. Q: Can L79L15ACUTR handle short-circuit conditions? A: No, L79L15ACUTR is not designed to handle short-circuit conditions. It is recommended to use external protection circuitry.

  9. Q: Can L79L15ACUTR be used in automotive applications? A: Yes, L79L15ACUTR is suitable for automotive applications as it can operate within the specified temperature range.

  10. Q: Are there any alternative voltage regulators similar to L79L15ACUTR? A: Yes, there are other voltage regulator ICs available with similar specifications, such as LM7915 and MC79L15.