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NJM7808FA
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NJM7808FA

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Voltage Regulator
  • Characteristics: Fixed Output, Positive Voltage Regulator
  • Package: TO-220F
  • Essence: Monolithic IC with three-terminal voltage regulator
  • Packaging/Quantity: Available in tubes of 50 pieces

Specifications

  • Input Voltage Range: 10V to 35V
  • Output Voltage: +8V
  • 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

Detailed Pin Configuration

The NJM7808FA has a standard three-pin configuration:

  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 output voltage.

Functional Features

  • Fixed Output Voltage: The NJM7808FA provides a stable +8V output voltage regardless of input variations.
  • Internal Thermal Overload Protection: The IC incorporates thermal shutdown circuitry to prevent damage due to excessive heat.
  • Short Circuit Protection: The device is designed to withstand short circuits without damage.
  • Low Quiescent Current: The regulator consumes low current when the load is light, resulting in improved efficiency.

Advantages and Disadvantages

Advantages: - Simple to use and integrate into various electronic circuits. - Reliable and stable output voltage. - Built-in protection features enhance safety and durability. - Suitable for a wide range of applications.

Disadvantages: - Fixed output voltage may limit flexibility in certain applications. - Limited output current capacity (up to 1A).

Working Principles

The NJM7808FA is a positive voltage regulator that utilizes a three-terminal configuration. It operates by comparing the reference voltage with the feedback voltage derived from the output. The internal circuitry adjusts the pass transistor to maintain a constant output voltage, compensating for input variations and load changes.

Detailed Application Field Plans

The NJM7808FA is commonly used in various electronic devices and systems, including but not limited to:

  1. Power Supplies: Provides regulated voltage for microcontrollers, sensors, and other components.
  2. Audio Amplifiers: Stabilizes the power supply voltage for audio amplification circuits.
  3. Automotive Electronics: Ensures stable voltage for automotive control units and accessories.
  4. Industrial Control Systems: Used in PLCs, motor drives, and other industrial automation equipment.
  5. Consumer Electronics: Found in TVs, DVD players, gaming consoles, etc., to regulate power supply voltages.

Detailed and Complete Alternative Models

  1. LM7808: A popular alternative from Texas Instruments with similar specifications and pin configuration.
  2. MC7808: An alternative from ON Semiconductor offering comparable performance and compatibility.
  3. UA7808: A voltage regulator IC manufactured by Fairchild Semiconductor, suitable as a substitute for NJM7808FA.

(Note: This list is not exhaustive, and there are several other alternatives available in the market.)

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Lista 10 Vanliga frågor och svar relaterade till tillämpningen av NJM7808FA i tekniska lösningar

Sure! Here are 10 common questions and answers related to the application of NJM7808FA in technical solutions:

  1. Q: What is NJM7808FA? A: NJM7808FA is a voltage regulator IC that provides a fixed output voltage of +8V.

  2. Q: What is the input voltage range for NJM7808FA? A: The input voltage range for NJM7808FA is typically between +10V to +35V.

  3. Q: What is the maximum output current of NJM7808FA? A: The maximum output current of NJM7808FA is 1A.

  4. Q: Can NJM7808FA handle higher input voltages than +35V? A: No, it is not recommended to exceed the maximum input voltage of +35V as it may damage the IC.

  5. Q: Is NJM7808FA suitable for both AC and DC input voltages? A: Yes, NJM7808FA can regulate both AC and DC input voltages.

  6. Q: Does NJM7808FA require any external components for operation? A: Yes, NJM7808FA requires input and output capacitors for stability and filtering purposes.

  7. Q: Can NJM7808FA be used in automotive applications? A: Yes, NJM7808FA is suitable for automotive applications as long as the input voltage does not exceed its maximum limit.

  8. Q: What is the typical dropout voltage of NJM7808FA? A: The typical dropout voltage of NJM7808FA is around 2V.

  9. Q: Can NJM7808FA be used in parallel to increase the output current? A: No, NJM7808FA is not designed to be used in parallel. It is recommended to use a higher current-rated regulator for higher output currents.

  10. Q: Is NJM7808FA available in different package types? A: Yes, NJM7808FA 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 NJM7808FA.