Microsemi Corporation
La imagen puede ser una representación.
Consulte las especificaciones para obtener detalles del producto.
SG7915AT
Ver Detalle Hojas de datos

SG7915AT

Product Overview

  • Category: Voltage Regulator
  • Use: To regulate and stabilize the output voltage in electronic circuits
  • Characteristics:
    • High precision voltage regulation
    • Low dropout voltage
    • Thermal shutdown protection
  • Package: TO-220
  • Essence: Integrated circuit voltage regulator
  • Packaging/Quantity: Available in reels or tubes, quantity varies depending on supplier

Specifications

  • Input Voltage Range: -35V to -60V
  • Output Voltage: -15V
  • Output Current: Up to 1A
  • Line Regulation: ±0.2%
  • Load Regulation: ±0.4%
  • Dropout Voltage: 2V (typical)
  • Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The SG7915AT voltage regulator has three pins:

  1. Input Pin (VIN): Connects to the input voltage source.
  2. Ground Pin (GND): Connected to the ground reference of the circuit.
  3. Output Pin (VOUT): Provides the regulated output voltage.

Functional Features

  • High Precision Regulation: The SG7915AT ensures a stable and accurate output voltage, minimizing fluctuations and noise.
  • Low Dropout Voltage: With a low dropout voltage of 2V, the regulator can maintain a stable output even when the input voltage is close to the desired output voltage.
  • Thermal Shutdown Protection: The device includes built-in thermal shutdown protection, preventing damage due to excessive heat.

Advantages and Disadvantages

Advantages: - High precision voltage regulation - Low dropout voltage - Thermal shutdown protection ensures safety - Compact TO-220 package for easy integration

Disadvantages: - Limited output current capacity (up to 1A) - Requires external components for proper operation

Working Principles

The SG7915AT is a negative voltage regulator that uses a series pass transistor to regulate the output voltage. It compares the reference voltage with the feedback voltage and adjusts the pass transistor accordingly to maintain a stable output voltage.

Detailed Application Field Plans

The SG7915AT is commonly used in various electronic applications, including:

  1. Power Supplies: It is widely used in power supply circuits to provide a stable -15V output voltage.
  2. Audio Amplifiers: The regulator ensures a constant voltage supply for audio amplifiers, reducing distortion and improving sound quality.
  3. Industrial Control Systems: It finds application in industrial control systems where precise voltage regulation is required.

Detailed and Complete Alternative Models

Some alternative models to the SG7915AT voltage regulator include:

  1. LM7915: A popular negative voltage regulator with similar specifications and pin configuration.
  2. MC7915: Another negative voltage regulator offering comparable performance.
  3. LT1085CT: A high-current negative voltage regulator suitable for demanding applications.

These alternatives can be considered based on specific requirements and availability.

Word count: 305 words

Enumere 10 preguntas y respuestas comunes relacionadas con la aplicación de SG7915AT en soluciones técnicas

Sure! Here are 10 common questions and answers related to the application of SG7915AT in technical solutions:

  1. Q: What is SG7915AT? A: SG7915AT is a voltage regulator IC that provides a fixed output voltage of -15V.

  2. Q: What is the input voltage range for SG7915AT? A: The input voltage range for SG7915AT is typically between -17V and -35V.

  3. Q: Can SG7915AT handle high current loads? A: Yes, SG7915AT can handle high current loads up to a maximum of 1.5A.

  4. Q: How does SG7915AT regulate the output voltage? A: SG7915AT uses a negative feedback mechanism to maintain a constant -15V output voltage regardless of changes in input voltage or load conditions.

  5. Q: Is it necessary to use external components with SG7915AT? A: Yes, SG7915AT requires external capacitors for stability. A minimum of two capacitors, one on the input side and one on the output side, are recommended.

  6. Q: Can SG7915AT be used in both AC and DC applications? A: Yes, SG7915AT can be used in both AC and DC applications as long as the input voltage falls within the specified range.

  7. Q: What is the typical dropout voltage of SG7915AT? A: The typical dropout voltage of SG7915AT is around 2V, meaning the input voltage must be at least 2V higher than the desired output voltage for proper regulation.

  8. Q: Does SG7915AT have built-in thermal protection? A: Yes, SG7915AT has built-in thermal shutdown protection that activates when the IC's temperature exceeds a certain threshold, preventing damage due to overheating.

  9. Q: Can SG7915AT be used in automotive applications? A: Yes, SG7915AT is suitable for automotive applications as it can handle the required voltage range and has good thermal characteristics.

  10. Q: Are there any specific precautions to consider when using SG7915AT? A: It is important to ensure proper heat dissipation by using an appropriate heatsink if the IC operates under high load conditions or in elevated ambient temperatures. Additionally, attention should be given to input and output capacitor selection and placement for stability and noise reduction.

Please note that these answers are general and may vary depending on the specific datasheet and application requirements of SG7915AT.