SG7815AT

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Regulator
• Characteristics: High precision, fixed output voltage, compact size
• Package: TO-220
• Essence: Linear regulator
• Packaging/Quantity: Bulk packaging, typically 50 pieces per tube

Specifications

• Input Voltage Range: 17V to 35V
• Output Voltage: 15V
• Output Current: Up to 1.5A
• Dropout Voltage: 2V (maximum)
• Line Regulation: 0.01%/V
• Load Regulation: 0.1%
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The SG7815AT has three pins:

1. Pin 1 (Input): This pin is connected to the input voltage source.
2. Pin 2 (Ground): This pin is connected to the ground or common reference point.
3. Pin 3 (Output): This pin provides the regulated output voltage.

Functional Features

• High Precision: The SG7815AT provides a highly accurate and stable output voltage of 15V.
• Overcurrent Protection: The IC incorporates overcurrent protection to safeguard the circuit from excessive current flow.
• Thermal Shutdown: In case of excessive temperature, the IC shuts down to prevent damage.
• Short-Circuit Protection: The device automatically protects against short-circuits, ensuring the safety of the circuit.

Advantages and Disadvantages

Advantages

• High precision and stability in regulating the output voltage.
• Compact size allows for easy integration into various electronic devices.
• Overcurrent, thermal, and short-circuit protections enhance reliability and safety.

Disadvantages

• Limited output current capacity of up to 1.5A.
• Dropout voltage of 2V may result in power dissipation and reduced efficiency.

Working Principles

The SG7815AT is a linear voltage regulator that uses a series pass transistor to regulate the output voltage. It operates by comparing the reference voltage with the feedback voltage and adjusts the pass transistor accordingly to maintain a constant output voltage of 15V.

Detailed Application Field Plans

The SG7815AT finds applications in various electronic devices, including:

1. Power Supplies: It is commonly used in power supply circuits to provide a stable 15V output for powering other components.
2. Audio Amplifiers: The IC can be employed in audio amplifiers to ensure a consistent voltage supply for optimal audio performance.
3. Industrial Control Systems: It is utilized in industrial control systems to regulate voltage levels and ensure reliable operation.

Detailed and Complete Alternative Models

• LM7815: A widely used alternative from Texas Instruments with similar specifications and pin configuration.
• UA7815: Another alternative from Fairchild Semiconductor offering comparable performance characteristics.

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