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KA78L05AMTF
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KA78L05AMTF

Product Overview

Category

The KA78L05AMTF belongs to the category of linear voltage regulators.

Use

It is primarily used for regulating and stabilizing voltage in electronic circuits.

Characteristics

  • Input Voltage Range: 7V to 25V
  • Output Voltage: 5V
  • Maximum Output Current: 100mA
  • Low Dropout Voltage: 1.7V (typical)
  • Low Quiescent Current: 4mA (typical)
  • Thermal Shutdown Protection
  • Short Circuit Protection

Package

The KA78L05AMTF comes in a TO-220 package, which is a widely used through-hole package for power semiconductors.

Essence

The essence of KA78L05AMTF lies in its ability to provide a stable and regulated 5V output voltage from a higher input voltage source.

Packaging/Quantity

The KA78L05AMTF is typically available in reels or tubes, with a quantity of 2500 units per reel/tube.

Specifications

  • Input Voltage Range: 7V to 25V
  • Output Voltage: 5V
  • Output Current: Up to 100mA
  • Dropout Voltage: 1.7V (typical)
  • Quiescent Current: 4mA (typical)
  • Operating Temperature Range: -40°C to +125°C
  • Package Type: TO-220
  • Package Dimensions: 10.16mm x 4.57mm x 9.53mm

Detailed Pin Configuration

The KA78L05AMTF has three pins:

  1. Input (Vin): This pin is connected to the input voltage source.
  2. Ground (GND): This pin is connected to the ground reference.
  3. Output (Vout): This pin provides the regulated 5V output voltage.

Functional Features

  • Voltage Regulation: The KA78L05AMTF ensures a stable and regulated 5V output voltage, regardless of variations in the input voltage.
  • Thermal Shutdown Protection: It incorporates thermal shutdown protection to prevent damage due to excessive temperature.
  • Short Circuit Protection: The device is designed to protect against short circuits, ensuring the safety of the circuit and components.

Advantages and Disadvantages

Advantages

  • Compact and easy to use.
  • Provides a stable 5V output voltage.
  • Offers thermal shutdown and short circuit protection.
  • Suitable for a wide range of applications.

Disadvantages

  • Limited output current capability (up to 100mA).
  • Dropout voltage may cause some power dissipation.

Working Principles

The KA78L05AMTF is a linear voltage regulator that uses a series pass transistor to regulate the output voltage. It compares the output voltage with a reference voltage and adjusts the pass transistor accordingly to maintain a constant 5V output. The device dissipates excess voltage as heat, which is why it has a maximum current rating and dropout voltage.

Detailed Application Field Plans

The KA78L05AMTF finds applications in various electronic circuits where a stable 5V voltage source is required. Some common application areas include:

  1. Microcontroller Power Supply: It can be used to provide a regulated power supply to microcontrollers, ensuring reliable operation.
  2. Sensor Interface Circuits: Many sensors require a stable voltage source, and the KA78L05AMTF can be used to provide the necessary power.
  3. Audio Amplifiers: It can be employed in audio amplifier circuits to provide a regulated voltage for powering the amplification stages.
  4. LED Lighting: The device can be utilized in LED lighting circuits to ensure a constant voltage supply for efficient and consistent illumination.

Detailed and Complete Alternative Models

  1. LM7805: A widely used linear voltage regulator with similar specifications and pin configuration.
  2. MC78L05: Another popular linear voltage regulator offering a stable 5V output.
  3. L78L05: A low-dropout (LDO) linear voltage regulator suitable for applications with tight voltage requirements.

These alternative models provide similar functionality and can be considered as substitutes for the KA78L05AMTF in various applications.

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Enumere 10 preguntas y respuestas comunes relacionadas con la aplicación de KA78L05AMTF en soluciones técnicas

Sure! Here are 10 common questions and answers related to the application of KA78L05AMTF in technical solutions:

  1. Q: What is KA78L05AMTF? A: KA78L05AMTF is a voltage regulator IC that provides a fixed output voltage of +5V.

  2. Q: What is the input voltage range for KA78L05AMTF? A: The input voltage range for KA78L05AMTF is typically between 7V and 25V.

  3. Q: What is the maximum output current of KA78L05AMTF? A: The maximum output current of KA78L05AMTF is 100mA.

  4. Q: Can KA78L05AMTF handle higher input voltages? A: No, KA78L05AMTF is designed to regulate voltages within the specified input voltage range only.

  5. Q: Is KA78L05AMTF suitable for battery-powered applications? A: Yes, KA78L05AMTF can be used in battery-powered applications as long as the input voltage remains within the specified range.

  6. Q: Does KA78L05AMTF require any external components for operation? A: Yes, KA78L05AMTF requires input and output capacitors for stability and filtering purposes.

  7. Q: Can KA78L05AMTF be used in automotive applications? A: Yes, KA78L05AMTF can be used in automotive applications as long as the input voltage remains within the specified range.

  8. Q: What is the thermal resistance of KA78L05AMTF? A: The thermal resistance of KA78L05AMTF is typically around 50°C/W.

  9. Q: Can KA78L05AMTF handle short-circuit conditions? A: Yes, KA78L05AMTF has built-in short-circuit protection to prevent damage under such conditions.

  10. Q: Can multiple KA78L05AMTF regulators be connected in parallel? A: Yes, multiple KA78L05AMTF regulators can be connected in parallel to increase the total output current capacity.

Please note that these answers are general and may vary depending on the specific datasheet and manufacturer's recommendations for KA78L05AMTF.