Microsemi Corporation
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SG7812AT
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SG7812AT

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Voltage Regulator
  • Characteristics:
    • Regulates input voltage to a fixed output voltage of +12V
    • Suitable for various electronic devices and circuits
  • Package: TO-220
  • Essence: Linear regulator
  • 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
  • Line Regulation: ±0.2%
  • Load Regulation: ±0.4%
  • Dropout Voltage: 2V (typical)

Pin Configuration

The SG7812AT has three pins:

  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 +12V output.

Functional Features

  • Voltage Regulation: The SG7812AT maintains a constant output voltage of +12V regardless of input voltage fluctuations.
  • Overcurrent Protection: Built-in protection circuitry prevents damage due to excessive current flow.
  • Thermal Shutdown: Automatically shuts down the device if the temperature exceeds safe limits, protecting it from overheating.
  • Short-Circuit Protection: Safeguards against short-circuits by limiting the output current.

Advantages and Disadvantages

Advantages: - Simple and reliable voltage regulation solution - Wide input voltage range - Low dropout voltage - Overcurrent and short-circuit protection

Disadvantages: - Generates heat during operation, requiring proper heat dissipation measures - Limited output current capacity (up to 1A)

Working Principles

The SG7812AT 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 stable +12V output.

Detailed Application Field Plans

The SG7812AT can be used in various applications, including: - Power supplies for electronic devices - Battery charging circuits - Audio amplifiers - Industrial control systems - Automotive electronics

Detailed and Complete Alternative Models

Some alternative models to the SG7812AT include: - LM7812: A popular voltage regulator from Texas Instruments - UA7812: Voltage regulator from Fairchild Semiconductor - L78M12: Regulator from STMicroelectronics

These alternatives offer similar functionality and can be used as replacements for the SG7812AT in many applications.

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10 pirs û bersivên hevpar ên têkildarî sepana SG7812AT di çareseriyên teknîkî de navnîş bikin

Sure! Here are 10 common questions and answers related to the application of SG7812AT in technical solutions:

  1. Q: What is SG7812AT? A: SG7812AT is a voltage regulator IC that provides a fixed output voltage of +12V.

  2. Q: What is the input voltage range for SG7812AT? A: The input voltage range for SG7812AT is typically between 14V and 35V.

  3. Q: Can SG7812AT handle higher input voltages? A: No, SG7812AT is designed to operate within the specified input voltage range. Exceeding this range may damage the IC.

  4. Q: What is the maximum output current of SG7812AT? A: The maximum output current of SG7812AT is 1.5A.

  5. Q: Is SG7812AT suitable for both AC and DC input voltages? A: Yes, SG7812AT can accept both AC and DC input voltages.

  6. Q: Does SG7812AT require any external components for operation? A: Yes, SG7812AT requires input and output capacitors for stability and filtering purposes.

  7. Q: Can SG7812AT be used in automotive applications? A: Yes, SG7812AT can be used in automotive applications as long as the input voltage range is within the specified limits.

  8. Q: What is the thermal resistance of SG7812AT? A: The thermal resistance of SG7812AT is typically around 50°C/W, which determines its ability to dissipate heat.

  9. Q: Can SG7812AT be used in high-temperature environments? A: SG7812AT has a maximum operating temperature of 125°C, so it can be used in moderately high-temperature environments.

  10. Q: Are there any alternative voltage regulator ICs similar to SG7812AT? A: Yes, there are other voltage regulator ICs available in the market with similar specifications, such as LM7812 and UA7812.

Please note that these answers are general and may vary depending on the specific datasheet and manufacturer's recommendations for SG7812AT.