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NJM79L09UA
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NJM79L09UA

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Voltage Regulator
  • Characteristics:
    • Low dropout voltage
    • Output current up to 100mA
    • Fixed output voltage of -9V
  • Package: TO-92 (3-pin package)
  • Essence: Linear voltage regulator
  • Packaging/Quantity: Typically sold in reels or tubes containing multiple units

Specifications

  • Input Voltage Range: -11V to -35V
  • Output Voltage: -9V (fixed)
  • Dropout Voltage: 1.2V (maximum)
  • Output Current: Up to 100mA
  • Quiescent Current: 5mA (maximum)
  • Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The NJM79L09UA 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 -9V output.

Functional Features

  • Voltage Regulation: The NJM79L09UA maintains a stable -9V output voltage, even with varying input voltages and load conditions.
  • Low Dropout Voltage: The regulator can operate with a small voltage difference between the input and output, minimizing power dissipation.
  • Overcurrent Protection: The device includes internal current limiting circuitry to protect against excessive current draw.
  • Thermal Shutdown: In case of high temperature, the regulator shuts down to prevent damage.

Advantages and Disadvantages

Advantages: - Compact and easy to use. - Suitable for low-power applications. - Provides a stable -9V output voltage.

Disadvantages: - Limited output current capability. - Requires external capacitors for stability.

Working Principles

The NJM79L09UA is a linear voltage regulator that uses a series pass transistor to regulate the output voltage. It compares the reference voltage (-9V) with the feedback voltage and adjusts the pass transistor accordingly to maintain a constant output voltage.

Detailed Application Field Plans

The NJM79L09UA is commonly used in various electronic devices, including: - Audio amplifiers - Power supplies - Battery-powered systems - Industrial control systems

Detailed and Complete Alternative Models

Some alternative models to the NJM79L09UA include: - LM79L09 (Texas Instruments) - MC79L09 (ON Semiconductor) - KA79L09 (Fairchild Semiconductor)

These alternatives offer similar functionality and characteristics, providing a -9V fixed output voltage for various applications.

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Luettele 10 yleistä kysymystä ja vastausta, jotka liittyvät NJM79L09UA :n soveltamiseen teknisissä ratkaisuissa

Sure! Here are 10 common questions and answers related to the application of NJM79L09UA in technical solutions:

  1. Q: What is NJM79L09UA? A: NJM79L09UA is a voltage regulator IC that provides a fixed output voltage of -9V.

  2. Q: What is the input voltage range for NJM79L09UA? A: The input voltage range for NJM79L09UA is typically between -11V to -35V.

  3. Q: What is the maximum output current of NJM79L09UA? A: The maximum output current of NJM79L09UA is 100mA.

  4. Q: Can NJM79L09UA be used to regulate positive voltages? A: No, NJM79L09UA is specifically designed for negative voltage regulation only.

  5. Q: What are the typical applications of NJM79L09UA? A: NJM79L09UA is commonly used in various electronic devices such as audio amplifiers, power supplies, and industrial control systems.

  6. Q: Does NJM79L09UA require any external components for operation? A: Yes, NJM79L09UA requires input and output capacitors for stability and filtering purposes.

  7. Q: What is the dropout voltage of NJM79L09UA? A: The dropout voltage of NJM79L09UA is typically around 1.5V.

  8. Q: Can NJM79L09UA handle short-circuit conditions? A: Yes, NJM79L09UA has built-in short-circuit protection to prevent damage under such conditions.

  9. Q: Is NJM79L09UA suitable for high-temperature environments? A: Yes, NJM79L09UA is designed to operate reliably in a wide temperature range, typically from -40°C to 125°C.

  10. Q: Can multiple NJM79L09UA regulators be connected in parallel for higher current output? A: Yes, it is possible to connect multiple NJM79L09UA regulators in parallel to increase the overall current output capacity.

Please note that these answers are general and may vary depending on the specific datasheet and application requirements of NJM79L09UA.