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NJM79L24A
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NJM79L24A

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Voltage Regulator
  • Characteristics:
    • Low dropout voltage
    • Output current up to 100mA
    • Fixed output voltage of -24V
  • Package: TO-92
  • Essence: Linear voltage regulator
  • Packaging/Quantity: Available in reels of 2,500 units

Specifications

  • Input Voltage Range: -30V to -7V
  • Output Voltage: -24V
  • Output Current: Up to 100mA
  • Dropout Voltage: 1.2V typical at 100mA
  • Quiescent Current: 5mA typical
  • Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The NJM79L24A has a TO-92 package with three pins:

  1. Input (Vin): Connects to the input voltage source.
  2. Ground (GND): Connected to the ground reference.
  3. Output (Vout): Provides the regulated -24V output.

Functional Features

  • Voltage Regulation: The NJM79L24A maintains a stable -24V output voltage regardless of variations in the input voltage or load conditions.
  • Low Dropout Voltage: With a dropout voltage of only 1.2V at 100mA, it can regulate the output voltage efficiently even when the input voltage is close to the desired output voltage.
  • Short Circuit Protection: The IC includes built-in protection against short circuits, preventing damage to the device and connected components.

Advantages and Disadvantages

Advantages: - Compact TO-92 package allows for easy integration into various applications. - Low dropout voltage ensures efficient regulation even with low input-output voltage differentials. - Built-in short circuit protection enhances reliability.

Disadvantages: - Limited output current capability of up to 100mA may not be sufficient for high-power applications. - Fixed output voltage of -24V restricts flexibility in certain designs requiring adjustable voltages.

Working Principles

The NJM79L24A is a linear voltage regulator that utilizes a negative feedback mechanism to maintain a constant -24V output voltage. It compares the output voltage with a reference voltage and adjusts the internal pass transistor accordingly to regulate the output voltage within the specified range.

Detailed Application Field Plans

The NJM79L24A finds application in various electronic devices and systems, including:

  1. Audio Amplifiers: Provides a stable -24V supply voltage for audio amplification circuits.
  2. Instrumentation Systems: Used to regulate voltage in measurement and control systems.
  3. Automotive Electronics: Suitable for automotive applications requiring a regulated -24V power source.
  4. Battery-Powered Devices: Enables efficient regulation of voltage in battery-powered devices.

Detailed and Complete Alternative Models

  1. LM79L24: Similar TO-92 package, -24V fixed output voltage, and comparable specifications.
  2. MC79L24: Available in TO-92 package, offers -24V fixed output voltage, and similar performance characteristics.
  3. UA79L24: TO-92 package, provides -24V fixed output voltage, and equivalent electrical specifications.

(Note: The above alternative models are provided as examples and may vary based on availability and specific requirements.)

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Lista 10 Vanliga frågor och svar relaterade till tillämpningen av NJM79L24A i tekniska lösningar

Sure! Here are 10 common questions and answers related to the application of NJM79L24A in technical solutions:

  1. Q: What is NJM79L24A? A: NJM79L24A is a voltage regulator IC that provides a fixed output voltage of -24V.

  2. Q: What is the input voltage range for NJM79L24A? A: The input voltage range for NJM79L24A is typically between -30V to -7V.

  3. Q: What is the maximum output current of NJM79L24A? A: The maximum output current of NJM79L24A is 100mA.

  4. Q: Can NJM79L24A be used in both AC and DC applications? A: Yes, NJM79L24A can be used in both AC and DC applications.

  5. Q: Is NJM79L24A suitable for battery-powered applications? A: Yes, NJM79L24A is suitable for battery-powered applications as it has low quiescent current consumption.

  6. Q: Can NJM79L24A handle short circuit protection? A: Yes, NJM79L24A has built-in short circuit protection to prevent damage to the IC.

  7. Q: What is the thermal shutdown feature in NJM79L24A? A: The thermal shutdown feature in NJM79L24A protects the IC from overheating by shutting down the output when the temperature exceeds a certain threshold.

  8. Q: Can NJM79L24A be used in automotive applications? A: Yes, NJM79L24A can be used in automotive applications as it can withstand a wide operating temperature range.

  9. Q: What is the typical dropout voltage of NJM79L24A? A: The typical dropout voltage of NJM79L24A is around 1.5V.

  10. Q: Can NJM79L24A be used in high-precision applications? A: No, NJM79L24A is not suitable for high-precision applications as it has a relatively high output voltage tolerance.

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