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NJM79L09A
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NJM79L09A

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Voltage Regulator
  • Characteristics: Low Dropout, Negative Voltage Regulator
  • Package: TO-92 (Through-Hole)
  • Essence: Linear Regulator IC
  • Packaging/Quantity: Bulk packaging, typically sold in reels or tubes

Specifications

  • Input Voltage Range: -35V to -10V
  • Output Voltage: -9V
  • Output Current: 100mA
  • Dropout Voltage: 1.2V (typical)
  • Quiescent Current: 5mA (typical)
  • Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The NJM79L09A 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

  • Voltage Regulation: The NJM79L09A regulates the input voltage to a stable -9V output.
  • Low Dropout: The dropout voltage is minimal, ensuring efficient operation even with low input-output differentials.
  • Short Circuit Protection: The IC incorporates internal protection against short circuits, preventing damage to the device.
  • Thermal Shutdown: In case of excessive temperature, the IC shuts down to prevent overheating and potential failure.

Advantages and Disadvantages

Advantages: - Compact and easy-to-use package - Reliable voltage regulation - Low dropout voltage - Built-in protection features

Disadvantages: - Limited output current capacity (100mA) - Requires external capacitors for stability

Working Principles

The NJM79L09A is a linear voltage regulator that utilizes a negative feedback mechanism to maintain a stable output voltage. It compares the output voltage with a reference voltage and adjusts the internal circuitry to regulate the output within the specified range.

Detailed Application Field Plans

The NJM79L09A is commonly used in various electronic applications, including:

  1. Power Supplies: Provides regulated -9V supply for analog circuits, sensors, or other components.
  2. Audio Amplifiers: Used as a negative power supply for audio amplifiers, ensuring stable operation.
  3. Instrumentation: Suitable for powering precision instruments requiring a stable negative voltage source.
  4. Automotive Electronics: Can be employed in automotive systems where a reliable negative voltage is necessary.

Detailed and Complete Alternative Models

  • LM79L09: Similar negative voltage regulator IC manufactured by Texas Instruments.
  • MC79L09: Negative voltage regulator IC produced by ON Semiconductor.
  • KA79L09: Another alternative from Fairchild Semiconductor.

These alternative models offer similar functionality and can be used as substitutes for the NJM79L09A in various applications.

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Listen Sie 10 häufige Fragen und Antworten im Zusammenhang mit der Anwendung von NJM79L09A in technischen Lösungen auf

Sure! Here are 10 common questions and answers related to the application of NJM79L09A in technical solutions:

  1. Q: What is NJM79L09A? A: NJM79L09A is a voltage regulator IC that provides a fixed output voltage of -9V.

  2. Q: What is the input voltage range for NJM79L09A? A: The input voltage range for NJM79L09A is typically between -11V to -35V.

  3. Q: What is the maximum output current of NJM79L09A? A: The maximum output current of NJM79L09A is 100mA.

  4. Q: Can NJM79L09A be used to regulate positive voltages? A: No, NJM79L09A is specifically designed for negative voltage regulation only.

  5. Q: What are the typical applications of NJM79L09A? A: NJM79L09A is commonly used in various electronic circuits where a stable -9V supply is required, such as audio amplifiers, analog circuits, and power supplies.

  6. Q: Does NJM79L09A require any external components for operation? A: Yes, NJM79L09A requires at least two external capacitors (input and output) for proper stability and filtering.

  7. Q: What is the dropout voltage of NJM79L09A? A: The dropout voltage of NJM79L09A is typically around 2V.

  8. Q: Can NJM79L09A handle short-circuit conditions? A: Yes, NJM79L09A has built-in protection features that allow it to withstand short-circuit conditions without damage.

  9. Q: What is the operating temperature range of NJM79L09A? A: The operating temperature range of NJM79L09A is typically between -40°C to +85°C.

  10. Q: Is NJM79L09A available in different package options? A: Yes, NJM79L09A is available in various package options, including TO-92, SOT-89, and DPAK.

Please note that these answers are general and may vary depending on the specific datasheet and manufacturer's specifications for NJM79L09A.