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NJM79M15FA
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NJM79M15FA

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Voltage Regulator
  • Characteristics: Low dropout, fixed negative voltage regulator
  • Package: TO-220F-4L
  • Essence: Provides a stable -15V output voltage from an input voltage range of -17V to -35V
  • Packaging/Quantity: Available in tape and reel packaging, with 2,500 units per reel

Specifications

  • Input Voltage Range: -17V to -35V
  • Output Voltage: -15V
  • Output Current: Up to 0.5A
  • Dropout Voltage: 2V (maximum)
  • Quiescent Current: 6mA (typical)
  • Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The NJM79M15FA has a standard TO-220F-4L package with the following pin configuration:

  1. Input Voltage (VIN)
  2. Ground (GND)
  3. No Connection (NC)
  4. Output Voltage (VOUT)

Functional Features

  • Provides a stable -15V output voltage regardless of input voltage fluctuations
  • Low dropout voltage ensures efficient regulation even with small input-output voltage differentials
  • Built-in overcurrent protection safeguards the circuit from excessive current flow
  • Thermal shutdown feature protects the IC from overheating

Advantages and Disadvantages

Advantages

  • Wide input voltage range allows for versatile applications
  • Low dropout voltage minimizes power dissipation
  • Compact TO-220F-4L package facilitates easy integration into various electronic systems
  • Overcurrent protection enhances circuit reliability
  • Thermal shutdown prevents damage due to excessive heat

Disadvantages

  • Limited output current capacity (up to 0.5A)
  • Fixed output voltage may not be suitable for all applications requiring negative voltage regulation

Working Principles

The NJM79M15FA is a linear voltage regulator that utilizes a negative feedback mechanism to maintain a stable -15V output voltage. It employs a pass transistor in conjunction with a voltage reference and error amplifier to regulate the output voltage. The input voltage is stepped down to the desired output voltage by dissipating excess power as heat.

Detailed Application Field Plans

The NJM79M15FA can be used in various applications, including:

  1. Power supplies for audio amplifiers
  2. Industrial control systems
  3. Automotive electronics
  4. Battery charging circuits
  5. Test and measurement equipment

Detailed and Complete Alternative Models

  1. LM7915: Negative voltage regulator with similar specifications and pin configuration
  2. MC79M15: Another alternative with comparable characteristics and package type
  3. KA7915: Negative voltage regulator offering -15V output voltage with different package options

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

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Lista 10 Vanliga frågor och svar relaterade till tillämpningen av NJM79M15FA i tekniska lösningar

Sure! Here are 10 common questions and answers related to the application of NJM79M15FA in technical solutions:

  1. Q: What is NJM79M15FA? A: NJM79M15FA is a voltage regulator IC that provides a fixed output voltage of -15V.

  2. Q: What is the input voltage range for NJM79M15FA? A: The input voltage range for NJM79M15FA is typically between -17V to -35V.

  3. Q: What is the maximum output current of NJM79M15FA? A: The maximum output current of NJM79M15FA is 500mA.

  4. Q: Can NJM79M15FA be used in both AC and DC applications? A: Yes, NJM79M15FA can be used in both AC and DC applications.

  5. Q: Is NJM79M15FA suitable for automotive applications? A: No, NJM79M15FA is not suitable for automotive applications as it is not designed to withstand automotive voltage transients.

  6. Q: Can NJM79M15FA be used in high-temperature environments? A: Yes, NJM79M15FA has a maximum operating temperature of 125°C, making it suitable for high-temperature environments.

  7. Q: Does NJM79M15FA require any external components for operation? A: Yes, NJM79M15FA requires input and output capacitors for stability and filtering purposes.

  8. Q: Can NJM79M15FA be used in battery-powered applications? A: Yes, NJM79M15FA can be used in battery-powered applications as long as the input voltage is within the specified range.

  9. Q: What is the typical dropout voltage of NJM79M15FA? A: The typical dropout voltage of NJM79M15FA is around 2V.

  10. Q: Is NJM79M15FA available in different package options? A: Yes, NJM79M15FA is available in various package options such as TO-220 and DPAK.

Please note that these answers are general and may vary depending on the specific datasheet and manufacturer's specifications for NJM79M15FA.