SG7912AT

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Regulator
• Characteristics:
  • Regulates voltage to a constant level
  • Designed for negative voltage regulation
  • High efficiency and low dropout voltage
• Package: TO-220
• Essence: Monolithic integrated circuit
• Packaging/Quantity: Bulk packaging, typically sold in reels or tubes

Specifications

• Input Voltage Range: -35V to -12.5V
• Output Voltage: -12V
• Output Current: Up to 1A
• Operating Temperature Range: -40°C to +125°C
• Line Regulation: 0.01%/V
• Load Regulation: 0.1%
• Dropout Voltage: 2V (typical)

Detailed Pin Configuration

The SG7912AT has three pins:

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

Functional Features

• Provides a stable and regulated negative voltage output.
• Built-in thermal shutdown protection.
• Short-circuit current limiting.
• Low quiescent current consumption.
• Fast transient response.

Advantages and Disadvantages

Advantages: - High efficiency operation. - Wide input voltage range. - Compact and easy to integrate into various applications. - Reliable and durable.

Disadvantages: - Requires external components for proper operation. - Limited output current capacity compared to higher power regulators.

Working Principles

The SG7912AT is a linear voltage regulator that uses a negative feedback mechanism to maintain a constant output voltage. It compares the output voltage with a reference voltage and adjusts the internal circuitry to regulate the output. It operates by dissipating excess energy as heat, which is why it has a dropout voltage.

Detailed Application Field Plans

The SG7912AT is commonly used in various electronic applications that require a stable negative voltage supply. Some typical application fields include:

1. Audio Amplifiers: Provides a regulated negative voltage for audio amplification circuits.
2. Industrial Control Systems: Used in control panels and power supplies for industrial automation.
3. Telecommunications: Provides negative voltage for telecommunication equipment such as routers and switches.
4. Automotive Electronics: Used in automotive systems for powering sensors, actuators, and control modules.

Detailed and Complete Alternative Models

• LM7912: Similar negative voltage regulator from Texas Instruments.
• MC7912: Negative voltage regulator from ON Semiconductor.
• UA7912: Negative voltage regulator from Fairchild Semiconductor.
• L7912CV: Negative voltage regulator from STMicroelectronics.

(Note: This list is not exhaustive and there are other alternative models available in the market.)

This entry provides an overview of the SG7912AT voltage regulator, including its basic information, specifications, pin configuration, functional features, advantages and disadvantages, working principles, application field plans, and alternative models.