Panasonic Electronic Components
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AN79L09M
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AN79L09M

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Voltage Regulator
  • Characteristics: Low dropout voltage, high current capability
  • Package: TO-252-3 (DPAK)
  • Essence: Linear voltage regulator
  • Packaging/Quantity: Tape and reel, 2500 units per reel

Specifications

  • Input Voltage Range: -35V to -10V
  • Output Voltage: -9V
  • Dropout Voltage: 1.2V (typical)
  • Output Current: 1A
  • Quiescent Current: 5mA (typical)
  • Line Regulation: 0.2% (typical)
  • Load Regulation: 0.4% (typical)
  • Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The AN79L09M IC 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 output voltage.

Functional Features

  • Low dropout voltage: The AN79L09M has a low dropout voltage of 1.2V, allowing it to regulate the output voltage even when the input voltage is close to the desired output voltage.
  • High current capability: With an output current rating of 1A, this voltage regulator can handle high current loads.
  • Excellent line and load regulation: The AN79L09M maintains stable output voltage despite variations in input voltage and load conditions.
  • Thermal shutdown protection: The IC includes built-in thermal shutdown protection to prevent damage due to excessive temperature.

Advantages and Disadvantages

Advantages: - Low dropout voltage ensures efficient regulation. - High current capability allows for powering various devices. - Excellent line and load regulation provides stable output voltage. - Thermal shutdown protection prevents overheating.

Disadvantages: - Limited output voltage options (only -9V). - Requires external capacitors for stability.

Working Principles

The AN79L09M is a linear voltage regulator that uses a pass transistor to regulate the output voltage. It operates by comparing the reference voltage with the feedback voltage from a voltage divider network. The pass transistor adjusts its resistance to maintain the desired output voltage, compensating for changes in input voltage and load conditions.

Detailed Application Field Plans

The AN79L09M is commonly used in various applications, including:

  1. Power supplies: It can be used as a voltage regulator in power supply circuits to provide a stable -9V output.
  2. Audio amplifiers: The IC can be employed in audio amplifier circuits to regulate the voltage required by the audio components.
  3. Industrial control systems: It finds application in industrial control systems where a regulated voltage is necessary for reliable operation.

Detailed and Complete Alternative Models

  1. LM317: A popular adjustable voltage regulator with a wide range of output voltage options.
  2. L7809: A fixed 9V voltage regulator with higher current capability.
  3. LT1084: A high-performance adjustable voltage regulator with low dropout voltage.

These alternative models offer different features and specifications, providing flexibility for various design requirements.

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Enumere 10 preguntas y respuestas comunes relacionadas con la aplicación de AN79L09M en soluciones técnicas

Sure! Here are 10 common questions and answers related to the application of AN79L09M in technical solutions:

  1. Q: What is AN79L09M? A: AN79L09M is a voltage regulator IC that provides a fixed output voltage of -9V.

  2. Q: What is the input voltage range for AN79L09M? A: The input voltage range for AN79L09M is typically between -11V and -35V.

  3. Q: What is the maximum output current of AN79L09M? A: The maximum output current of AN79L09M is around 100mA.

  4. Q: Can AN79L09M be used in both AC and DC applications? A: Yes, AN79L09M can be used in both AC and DC applications.

  5. Q: Is AN79L09M suitable for low-power applications? A: Yes, AN79L09M is commonly used in low-power applications due to its low quiescent current.

  6. Q: Does AN79L09M require any external components for operation? A: Yes, AN79L09M requires at least two external capacitors for stability and filtering purposes.

  7. Q: Can AN79L09M handle short-circuit conditions? A: AN79L09M has built-in short-circuit protection, which allows it to handle short-circuit conditions without damage.

  8. Q: What is the typical dropout voltage of AN79L09M? A: The typical dropout voltage of AN79L09M is around 1.5V.

  9. Q: Can AN79L09M be used in automotive applications? A: Yes, AN79L09M is suitable for automotive applications as it can withstand high temperatures and voltage transients.

  10. Q: Are there any alternative voltage regulators similar to AN79L09M? A: Yes, there are other voltage regulator ICs available in the market, such as LM79L09, MC79L09, etc., which provide similar functionality.

Please note that the answers provided here are general and may vary depending on specific datasheet specifications and application requirements.