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NJM78L24A
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NJM78L24A

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Voltage Regulator
  • Characteristics: Low Dropout, Fixed Output Voltage
  • Package: TO-92
  • Essence: Linear Voltage Regulator
  • Packaging/Quantity: Tape and Reel, 2000 pieces per reel

Specifications

  • Input Voltage Range: 4.75V to 30V
  • Output Voltage: 24V
  • Output Current: 100mA
  • Dropout Voltage: 1.7V (typical)
  • Quiescent Current: 5mA (typical)
  • Line Regulation: 0.2% (typical)
  • Load Regulation: 0.4% (typical)
  • Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The NJM78L24A has three pins:

  1. Input (VIN): This pin is used to connect the input voltage source.
  2. Ground (GND): This pin is connected to the ground reference.
  3. Output (VOUT): The regulated output voltage is obtained from this pin.

Functional Features

  • Provides a stable and regulated output voltage of 24V.
  • Low dropout voltage ensures efficient operation even with low input voltages.
  • Built-in overcurrent and thermal protection for enhanced reliability.
  • Excellent line and load regulation characteristics ensure stable output under varying conditions.
  • Compact TO-92 package allows for easy integration into various electronic circuits.

Advantages and Disadvantages

Advantages

  • Simple and straightforward design.
  • Cost-effective solution for voltage regulation.
  • Wide input voltage range allows for versatile applications.
  • Low quiescent current minimizes power consumption.
  • Reliable performance with built-in protection features.

Disadvantages

  • Limited output current capability (100mA).
  • Not suitable for high-power applications.
  • Requires external capacitors for stability.

Working Principles

The NJM78L24A is a linear voltage regulator that uses a series pass transistor to regulate the output voltage. It operates by comparing the reference voltage with the feedback voltage obtained from a voltage divider network. The error amplifier adjusts the pass transistor's resistance to maintain a constant output voltage, compensating for changes in input voltage and load conditions.

Detailed Application Field Plans

The NJM78L24A is commonly used in various electronic devices and systems, including:

  1. Power supplies for microcontrollers and other low-power digital circuits.
  2. Battery-powered devices requiring a stable 24V supply.
  3. Automotive electronics, such as dashboard displays and audio systems.
  4. Industrial control systems and instrumentation.
  5. Consumer electronics, such as audio amplifiers and LED lighting.

Detailed and Complete Alternative Models

  1. LM78L24: Similar specifications and pin configuration, available in different package options.
  2. MC78L24: Equivalent voltage regulator with comparable performance characteristics.
  3. UA78L24: Alternative option from another manufacturer, offering similar functionality.

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

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10个与NJM78L24A在技术解决方案中的应用相关的常见问题及解答

Sure! Here are 10 common questions and answers related to the application of NJM78L24A in technical solutions:

  1. Q: What is NJM78L24A? A: NJM78L24A is a voltage regulator IC that provides a fixed output voltage of +24V.

  2. Q: What is the input voltage range for NJM78L24A? A: The input voltage range for NJM78L24A is typically between 26V and 30V.

  3. Q: What is the maximum output current of NJM78L24A? A: The maximum output current of NJM78L24A is 100mA.

  4. Q: Can NJM78L24A handle higher input voltages? A: No, NJM78L24A is designed to regulate the voltage to +24V and cannot handle higher input voltages.

  5. Q: Is NJM78L24A suitable for battery-powered applications? A: Yes, NJM78L24A can be used in battery-powered applications as long as the input voltage is within its specified range.

  6. Q: Does NJM78L24A require any external components for operation? A: Yes, NJM78L24A requires at least two external capacitors (input and output) for stable operation.

  7. Q: Can NJM78L24A handle short-circuit conditions? A: NJM78L24A has built-in short-circuit protection, which helps protect it from damage during short-circuit conditions.

  8. Q: Can NJM78L24A handle high temperatures? A: NJM78L24A has a maximum operating temperature of 125°C, making it suitable for most normal temperature environments.

  9. Q: Can NJM78L24A be used in automotive applications? A: Yes, NJM78L24A can be used in automotive applications as long as the input voltage and temperature requirements are met.

  10. Q: Are there any alternatives to NJM78L24A for +24V voltage regulation? A: Yes, there are other voltage regulator ICs available in the market that can provide a fixed output voltage of +24V, such as LM7824 or L78L24.