NJR Corporation/NJRC
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NJM7809FA
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NJM7809FA

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Voltage Regulator
  • Characteristics: Fixed Output, Positive Voltage Regulator
  • Package: TO-220
  • Essence: Monolithic integrated circuit designed to provide a constant output voltage of +9V.
  • Packaging/Quantity: Available in reels or tubes, with varying quantities depending on the supplier.

Specifications

  • Input Voltage Range: 11V to 35V
  • Output Voltage: +9V
  • Output Current: Up to 1A
  • Dropout Voltage: 2V (maximum)
  • Line Regulation: 0.2% (typical)
  • Load Regulation: 0.4% (typical)
  • Operating Temperature Range: -40°C to +125°C

Pin Configuration

The NJM7809FA has three pins:

  1. Input Pin (VIN): Connects to the input voltage source.
  2. Ground Pin (GND): Connected to the ground reference.
  3. Output Pin (VOUT): Provides the regulated +9V output.

Functional Features

  • Voltage Regulation: The NJM7809FA maintains a constant output voltage of +9V, regardless of variations in the input voltage or load conditions.
  • Thermal Protection: Built-in thermal shutdown protection prevents the IC from overheating and ensures safe operation.
  • Short Circuit Protection: The device is equipped with internal current limiting circuitry that protects against short circuits.
  • Low Dropout Voltage: With a maximum dropout voltage of 2V, the NJM7809FA can regulate the output voltage even when the input voltage is close to the desired output voltage.

Advantages and Disadvantages

Advantages: - Simple to use and integrate into various electronic circuits. - Provides a stable and reliable +9V output voltage. - Offers protection against thermal overload and short circuits.

Disadvantages: - Limited to fixed output voltage of +9V, not adjustable. - Requires external capacitors for stability.

Working Principles

The NJM7809FA is based on the principle of linear voltage regulation. It utilizes a series pass transistor to regulate the output voltage. The input voltage is compared to a reference voltage, and the difference is amplified to control the pass transistor, ensuring a constant output voltage of +9V.

Application Field Plans

The NJM7809FA finds applications in various electronic devices and systems, including:

  1. Power Supplies: Used as a voltage regulator in power supply circuits to provide a stable +9V output.
  2. Audio Amplifiers: Provides a regulated voltage for audio amplifier circuits, ensuring consistent performance.
  3. Microcontroller Systems: Used to power microcontrollers and other digital components that require a regulated voltage.

Alternative Models

There are several alternative models available that offer similar functionality to the NJM7809FA. Some popular alternatives include:

  1. LM7809: A widely used voltage regulator IC with a fixed +9V output.
  2. MC7809: Another commonly used +9V voltage regulator IC.
  3. UA7809: A positive voltage regulator IC with a fixed +9V output.

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

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Maglista ng 10 karaniwang tanong at sagot na nauugnay sa aplikasyon ng NJM7809FA sa mga teknikal na solusyon

Sure! Here are 10 common questions and answers related to the application of NJM7809FA in technical solutions:

  1. Q: What is NJM7809FA? A: NJM7809FA is a voltage regulator IC that provides a fixed output voltage of +9V.

  2. Q: What is the input voltage range for NJM7809FA? A: The input voltage range for NJM7809FA is typically between +11V and +35V.

  3. Q: What is the maximum output current of NJM7809FA? A: The maximum output current of NJM7809FA is 1A.

  4. Q: Can NJM7809FA handle higher input voltages than +35V? A: No, it is not recommended to exceed the maximum input voltage range of +35V for NJM7809FA.

  5. Q: Is NJM7809FA suitable for both AC and DC input voltages? A: Yes, NJM7809FA can handle both AC and DC input voltages.

  6. Q: Does NJM7809FA require any external components for operation? A: Yes, NJM7809FA requires input and output capacitors for stability and filtering purposes.

  7. Q: Can NJM7809FA be used in automotive applications? A: Yes, NJM7809FA is suitable for automotive applications as long as the input voltage range is within specifications.

  8. Q: What is the typical dropout voltage of NJM7809FA? A: The typical dropout voltage of NJM7809FA is around 2V.

  9. Q: Can NJM7809FA be used in parallel to increase the output current? A: No, NJM7809FA is not designed to be used in parallel for increasing the output current.

  10. Q: Is NJM7809FA available in different package types? A: Yes, NJM7809FA is available in various package types such as TO-220, TO-252, and DPAK.

Please note that these answers are general and may vary depending on the specific datasheet and manufacturer's recommendations for NJM7809FA.