ON Semiconductor
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KA7912TU
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KA7912TU

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Voltage Regulator
  • Characteristics:
    • Regulates input voltage to a fixed output voltage of -12V
    • Designed for use in various electronic devices
  • Package: TO-220
  • Essence: Provides stable and regulated -12V power supply
  • Packaging/Quantity: Available in reels or tubes, quantity varies based on manufacturer

Specifications

  • Input Voltage: Up to 35V
  • Output Voltage: -12V
  • Output Current: Up to 1A
  • Operating Temperature: -40°C to +125°C
  • Package Type: TO-220
  • Pin Count: 3

Detailed Pin Configuration

The KA7912TU IC has three pins:

  1. Input Pin (Pin 1): Connects to the positive terminal of the input voltage source.
  2. Ground Pin (Pin 2): Connects to the ground or common reference point.
  3. Output Pin (Pin 3): Provides the regulated -12V output voltage.

Functional Features

  • Regulates input voltage to a stable -12V output voltage.
  • Provides protection against overcurrent and overheating.
  • Low dropout voltage ensures efficient operation.
  • Compact size and easy integration into circuit designs.

Advantages

  • Reliable and consistent voltage regulation.
  • Suitable for a wide range of electronic devices.
  • Protection features enhance safety and longevity.
  • Easy to use and integrate into circuit designs.
  • Cost-effective solution for voltage regulation needs.

Disadvantages

  • Limited output current capacity (up to 1A).
  • Requires proper heat dissipation for optimal performance.
  • Not suitable for high-power applications.

Working Principles

The KA7912TU is a linear voltage regulator that utilizes a negative feedback mechanism to maintain a stable -12V output voltage. It compares the output voltage with a reference voltage and adjusts the internal circuitry to regulate the output voltage. The regulator continuously monitors the input voltage and adjusts its internal components to ensure a consistent -12V output, even when the input voltage fluctuates.

Detailed Application Field Plans

The KA7912TU is commonly used in various electronic devices that require a stable -12V power supply. Some typical applications include:

  1. Audio Amplifiers: Provides a regulated -12V supply for audio amplification circuits.
  2. Industrial Control Systems: Used in control panels and automation systems.
  3. Automotive Electronics: Regulates voltage for car audio systems, lighting, and other components.
  4. Power Supplies: Can be used as a part of a larger power supply system.

Detailed and Complete Alternative Models

  • LM7912: Similar voltage regulator IC with -12V output.
  • MC7912: Another alternative with -12V output voltage.
  • UA7912: Voltage regulator IC with -12V output and similar specifications.

Note: This is not an exhaustive list, and there are several other alternative models available in the market.

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací KA7912TU v technických řešeních

Sure! Here are 10 common questions and answers related to the application of KA7912TU in technical solutions:

  1. Q: What is KA7912TU? A: KA7912TU is a voltage regulator IC that provides a fixed output voltage of -12V.

  2. Q: What is the input voltage range for KA7912TU? A: The input voltage range for KA7912TU is typically between -14V to -35V.

  3. Q: What is the maximum output current of KA7912TU? A: The maximum output current of KA7912TU is 1A.

  4. Q: Can KA7912TU be used to regulate positive voltages? A: No, KA7912TU is specifically designed to regulate negative voltages only.

  5. Q: How does KA7912TU handle thermal protection? A: KA7912TU has built-in thermal shutdown protection that prevents the IC from overheating.

  6. Q: Can I use KA7912TU in high-temperature environments? A: Yes, KA7912TU is designed to operate in a wide temperature range, typically from -40°C to +125°C.

  7. Q: Is it necessary to use external capacitors with KA7912TU? A: Yes, it is recommended to use input and output capacitors for stability and noise reduction.

  8. Q: Can KA7912TU be used in battery-powered applications? A: Yes, KA7912TU can be used in battery-powered applications as long as the input voltage requirements are met.

  9. Q: Can multiple KA7912TU regulators be connected in parallel? A: Yes, multiple KA7912TU regulators can be connected in parallel to increase the output current capacity.

  10. Q: What are some typical applications of KA7912TU? A: KA7912TU is commonly used in audio amplifiers, power supplies, and other electronic circuits that require a regulated -12V voltage source.

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