NJR Corporation/NJRC
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NJM78L24L2A
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NJM78L24L2A

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Voltage Regulator
  • Characteristics: Low dropout voltage, high ripple rejection, low quiescent current
  • Package: TO-92
  • Essence: Linear voltage regulator
  • Packaging/Quantity: Available in reels of 2,500 units

Specifications

  • Input Voltage Range: 4.75V to 30V
  • Output Voltage: 24V
  • Output Current: 100mA
  • Dropout Voltage: 0.5V (typical)
  • Quiescent Current: 5mA (typical)
  • Ripple Rejection: 60dB (typical)
  • Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The NJM78L24L2A has 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 output voltage.

Functional Features

  • Voltage Regulation: The NJM78L24L2A regulates the input voltage to a stable 24V output.
  • Low Dropout Voltage: The device maintains regulation even when the input voltage is close to the desired output voltage.
  • High Ripple Rejection: It effectively filters out noise and ripple present in the input voltage.
  • Low Quiescent Current: The IC consumes minimal current when in standby mode, conserving power.

Advantages and Disadvantages

Advantages: - Compact TO-92 package allows for easy integration into various applications. - Wide input voltage range enables compatibility with different power sources. - Excellent ripple rejection ensures a clean output voltage. - Low quiescent current minimizes power consumption.

Disadvantages: - Limited output current capability (100mA). - Dropout voltage may cause a slight voltage drop across the regulator.

Working Principles

The NJM78L24L2A 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 stable output voltage. The device operates in a continuous mode, providing a constant 24V output as long as the input voltage remains within the specified range.

Detailed Application Field Plans

The NJM78L24L2A finds applications in various fields, including:

  1. Industrial Electronics: Powering sensors, actuators, and control circuits.
  2. Automotive Electronics: Providing regulated voltage for automotive systems.
  3. Consumer Electronics: Used in audio amplifiers, LED drivers, and other low-power applications.
  4. Telecommunications: Voltage regulation for communication devices and network equipment.
  5. Medical Devices: Powering medical instruments and monitoring systems.

Detailed and Complete Alternative Models

  • LM78L24: Similar specifications and pin configuration, available in different package options.
  • MC78L24: Alternative voltage regulator with comparable characteristics and pinout.
  • UA78L24: Another linear voltage regulator offering a 24V output voltage.

(Note: This list is not exhaustive and there may be other alternative models available in the market.)

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Wymień 10 typowych pytań i odpowiedzi związanych z zastosowaniem NJM78L24L2A w rozwiązaniach technicznych

Sure! Here are 10 common questions and answers related to the application of NJM78L24L2A in technical solutions:

  1. Q: What is NJM78L24L2A? A: NJM78L24L2A is a voltage regulator IC that provides a fixed output voltage of 24V.

  2. Q: What is the input voltage range for NJM78L24L2A? A: The input voltage range for NJM78L24L2A is typically between 27V and 30V.

  3. Q: What is the maximum output current of NJM78L24L2A? A: The maximum output current of NJM78L24L2A is 100mA.

  4. Q: Can NJM78L24L2A handle higher input voltages? A: No, NJM78L24L2A is designed to operate within the specified input voltage range. Exceeding this range may damage the IC.

  5. Q: Is NJM78L24L2A suitable for battery-powered applications? A: Yes, NJM78L24L2A can be used in battery-powered applications as long as the input voltage remains within the specified range.

  6. Q: Does NJM78L24L2A require any external components for operation? A: Yes, NJM78L24L2A requires input and output capacitors for stability and filtering purposes. Refer to the datasheet for recommended values.

  7. Q: Can NJM78L24L2A handle short-circuit conditions? A: NJM78L24L2A has built-in short-circuit protection, but it is always advisable to avoid short-circuits to prevent excessive heat dissipation.

  8. Q: Can NJM78L24L2A be used in automotive applications? A: Yes, NJM78L24L2A can be used in automotive applications as long as the input voltage remains within the specified range and appropriate protection measures are taken.

  9. Q: What is the thermal resistance of NJM78L24L2A? A: The thermal resistance of NJM78L24L2A is typically around 160°C/W, which determines its ability to dissipate heat.

  10. Q: Are there any alternative voltage regulator ICs similar to NJM78L24L2A? A: Yes, there are several alternatives available from different manufacturers, such as LM78L24, UA78L24, and MC78L24. These ICs have similar specifications and can be used as substitutes.

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