Microsemi Corporation
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SG7805AK-DESC
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SG7805AK-DESC

Product Overview

Category

SG7805AK-DESC belongs to the category of voltage regulators.

Use

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

Characteristics

  • Voltage regulation: SG7805AK-DESC ensures a stable output voltage regardless of input fluctuations.
  • Efficiency: It operates with high efficiency, minimizing power loss.
  • Temperature stability: The device maintains consistent performance even under varying temperature conditions.

Package

SG7805AK-DESC comes in a compact and durable package, designed to protect the internal components from external factors such as moisture and physical damage.

Essence

The essence of SG7805AK-DESC lies in its ability to provide a reliable and constant voltage supply, ensuring the proper functioning of electronic devices.

Packaging/Quantity

Each package of SG7805AK-DESC contains a single unit of the voltage regulator.

Specifications

  • Input voltage range: 7V - 25V
  • Output voltage: 5V
  • Maximum output current: 1A
  • Dropout voltage: 2V (maximum)
  • Operating temperature range: -40°C to +125°C

Detailed Pin Configuration

SG7805AK-DESC has three pins:

  1. Input pin (Vin): This pin receives the input voltage that needs to be regulated.
  2. Ground pin (GND): This pin is connected to the ground reference of the circuit.
  3. Output pin (Vout): The regulated output voltage is obtained from this pin.

Functional Features

  • Voltage regulation: SG7805AK-DESC ensures a stable output voltage of 5V, regardless of input voltage fluctuations.
  • Overcurrent protection: The device incorporates overcurrent protection to safeguard the circuit from excessive current flow.
  • Thermal shutdown: In case of excessive heat, the regulator automatically shuts down to prevent damage to the device.

Advantages and Disadvantages

Advantages

  • Reliable voltage regulation
  • High efficiency
  • Temperature stability
  • Overcurrent protection

Disadvantages

  • Dropout voltage of 2V may limit its use in low voltage applications.
  • Limited maximum output current of 1A.

Working Principles

SG7805AK-DESC operates based on the principle of feedback control. It compares the output voltage with a reference voltage and adjusts the internal circuitry to maintain a constant output voltage. This is achieved by varying the resistance within the regulator, compensating for any changes in the input voltage.

Detailed Application Field Plans

SG7805AK-DESC finds extensive application in various electronic devices and circuits, including: - Power supplies - Battery chargers - Audio amplifiers - Microcontroller systems - LED lighting systems

Detailed and Complete Alternative Models

Some alternative models that can be used as substitutes for SG7805AK-DESC include: - LM7805: A widely used linear voltage regulator with similar specifications. - MC7805: Another popular choice for voltage regulation in electronic circuits. - L78M05: A compact and efficient voltage regulator suitable for low-power applications.

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

In conclusion, SG7805AK-DESC is a reliable voltage regulator that ensures stable and efficient power supply in electronic circuits. Its temperature stability and overcurrent protection make it suitable for a wide range of applications. However, its limited maximum output current and dropout voltage should be considered when selecting an appropriate model for specific requirements.

10个与SG7805AK-DESC在技术解决方案中的应用相关的常见问题及解答

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

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

  2. Q: What are the typical applications of SG7805AK-DESC? A: SG7805AK-DESC is commonly used in various electronic devices and circuits where a stable 5V power supply is required, such as microcontrollers, sensors, and digital logic circuits.

  3. Q: How does SG7805AK-DESC work? A: SG7805AK-DESC regulates the input voltage and maintains a constant 5V output by using internal circuitry to adjust the current flow.

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

  5. Q: Can SG7805AK-DESC handle high currents? A: Yes, SG7805AK-DESC can handle currents up to 1A, making it suitable for many low to medium power applications.

  6. Q: Is an external heat sink required for SG7805AK-DESC? A: It depends on the power dissipation. If the power dissipation exceeds a certain limit, an external heat sink may be necessary to prevent overheating.

  7. Q: Can SG7805AK-DESC operate with both AC and DC input? A: Yes, SG7805AK-DESC can accept both AC and DC input voltages, but it requires additional components like rectifiers and capacitors to convert AC to DC if needed.

  8. Q: Does SG7805AK-DESC have built-in protection features? A: Yes, SG7805AK-DESC typically includes overcurrent protection and thermal shutdown to prevent damage in case of excessive current or temperature.

  9. Q: Can multiple SG7805AK-DESC ICs be connected in parallel for higher current output? A: Yes, it is possible to connect multiple SG7805AK-DESC ICs in parallel to increase the overall current output capacity.

  10. Q: Are there any specific PCB layout considerations for using SG7805AK-DESC? A: It is recommended to keep the input and output traces short, use proper decoupling capacitors, and ensure adequate heat dissipation for optimal performance and reliability.

Please note that the answers provided here are general and may vary depending on the specific datasheet and application requirements of SG7805AK-DESC.