Microsemi Corporation
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SG7805AK
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SG7805AK

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Voltage Regulator
  • Characteristics: Fixed Output, Positive Voltage Regulator
  • Package: TO-220
  • Essence: Monolithic IC with three-terminal voltage regulator function
  • Packaging/Quantity: Available in reels or tubes, quantity varies based on manufacturer

Specifications

  • Input Voltage: Up to 35V
  • Output Voltage: 5V
  • Output Current: Up to 1A
  • Dropout Voltage: 2V (typical)
  • Operating Temperature Range: -40°C to +125°C
  • Line Regulation: 0.2% (typical)
  • Load Regulation: 0.4% (typical)

Pin Configuration

The SG7805AK 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 SG7805AK maintains a constant output voltage of 5V, regardless of variations in input voltage or load conditions.
  • Short Circuit Protection: The IC includes internal current limiting and thermal shutdown features to protect against short circuits and excessive power dissipation.
  • Low Dropout Voltage: With a dropout voltage of only 2V, the regulator can operate efficiently even when the input voltage is close to the desired output voltage.

Advantages and Disadvantages

Advantages: - Easy to use and integrate into various electronic circuits. - Stable and reliable output voltage regulation. - Internal protection features enhance circuit safety.

Disadvantages: - Limited output current capacity (up to 1A). - Requires external capacitors for stability.

Working Principles

The SG7805AK is based on a linear voltage regulator architecture. It utilizes a series pass transistor to regulate the output voltage. The internal circuitry compares the output voltage with a reference voltage and adjusts the pass transistor accordingly to maintain a constant output voltage of 5V.

Detailed Application Field Plans

The SG7805AK finds applications in various electronic devices and systems, including but not limited to: - Power supplies for microcontrollers and digital circuits. - Battery charging circuits. - Audio amplifiers and preamplifiers. - Voltage regulators for sensors and actuators. - Automotive electronics.

Detailed and Complete Alternative Models

  • LM7805: A popular alternative from Texas Instruments.
  • MC7805: An alternative from ON Semiconductor.
  • UA7805: An alternative from Fairchild Semiconductor.
  • L78M05: An alternative from STMicroelectronics.

These alternatives have similar specifications and pin configurations, making them suitable replacements for the SG7805AK in most applications.

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Перелічіть 10 типових запитань і відповідей, пов’язаних із застосуванням SG7805AK у технічних рішеннях

Sure! Here are 10 common questions and answers related to the application of SG7805AK in technical solutions:

  1. Q: What is SG7805AK? A: SG7805AK is a voltage regulator IC that provides a fixed output voltage of +5V.

  2. Q: What is the maximum input voltage for SG7805AK? A: The maximum input voltage for SG7805AK is typically around 35V.

  3. Q: Can SG7805AK handle high current loads? A: Yes, SG7805AK can handle current loads up to 1A.

  4. Q: How does SG7805AK regulate the output voltage? A: SG7805AK uses a feedback mechanism to maintain a constant output voltage of +5V.

  5. Q: Is it necessary to use external components with SG7805AK? A: Yes, SG7805AK requires external capacitors for stability and filtering purposes.

  6. Q: Can SG7805AK be used in both AC and DC applications? A: Yes, SG7805AK can be used in both AC and DC applications.

  7. Q: What is the typical dropout voltage of SG7805AK? A: The typical dropout voltage of SG7805AK is around 2V.

  8. Q: Can SG7805AK handle temperature variations? A: Yes, SG7805AK has built-in thermal protection and can operate within a wide temperature range.

  9. Q: Can multiple SG7805AK regulators be connected in parallel? A: Yes, multiple SG7805AK regulators can be connected in parallel to increase the current handling capacity.

  10. Q: What are some common applications of SG7805AK? A: SG7805AK is commonly used in various electronic devices, such as power supplies, battery chargers, and voltage converters.

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