SG7812AT-883B

Product Overview

Category

SG7812AT-883B belongs to the category of integrated circuits (ICs).

Use

This product is commonly used as a voltage regulator in various electronic devices.

Characteristics

• Voltage Output: 12V
• Package Type: TO-3
• Operating Temperature Range: -55°C to +125°C
• Input Voltage Range: 14V to 35V
• Output Current: Up to 1A

Package and Quantity

SG7812AT-883B is typically packaged in a TO-3 package. It is available in quantities of one unit per package.

Essence

The essence of SG7812AT-883B lies in its ability to regulate input voltage and provide a stable output voltage of 12V.

Specifications

• Input Voltage Range: 14V to 35V
• Output Voltage: 12V
• Output Current: Up to 1A
• Dropout Voltage: 2V (maximum)
• Line Regulation: 0.01%/V
• Load Regulation: 0.5%
• Ripple Rejection Ratio: 70dB (minimum)
• Quiescent Current: 6mA (typical)

Pin Configuration

SG7812AT-883B has three pins:

1. Input Pin (Pin 1): This pin is used to connect the input voltage source.
2. Ground Pin (Pin 2): This pin is connected to the ground or common reference point.
3. Output Pin (Pin 3): The regulated output voltage of 12V is obtained from this pin.

Functional Features

• Voltage Regulation: SG7812AT-883B ensures a stable output voltage of 12V, regardless of variations in the input voltage.
• Overcurrent Protection: The device incorporates overcurrent protection to safeguard against excessive current flow.
• Thermal Protection: It includes thermal protection to prevent damage due to overheating.
• Short Circuit Protection: SG7812AT-883B is designed to protect against short circuits, ensuring the safety of the connected circuitry.

Advantages and Disadvantages

Advantages

• High Voltage Regulation Accuracy
• Wide Input Voltage Range
• Overcurrent, Thermal, and Short Circuit Protection
• Suitable for Harsh Environments (Operating Temperature Range: -55°C to +125°C)

Disadvantages

• Limited Output Current Capacity (Up to 1A)
• Dropout Voltage of 2V may cause power dissipation in certain applications

Working Principles

SG7812AT-883B operates on the principle of linear voltage regulation. It utilizes a series pass transistor to regulate the output voltage. The input voltage is compared to a reference voltage, and the difference is amplified to control the pass transistor. This feedback mechanism ensures that the output voltage remains constant despite variations in the input voltage.

Application Field Plans

SG7812AT-883B finds application in various electronic devices that require a stable 12V power supply. Some common application fields include: - Power Supply Units (PSUs) - Audio Amplifiers - Industrial Control Systems - Automotive Electronics - Telecommunications Equipment

Alternative Models

There are several alternative models available in the market that serve similar purposes as SG7812AT-883B. Some notable alternatives include: - LM7812: A widely used 12V voltage regulator IC manufactured by multiple companies. - UA7812: Another popular 12V voltage regulator IC with similar specifications. - L78S12CV: A 12V voltage regulator IC with higher output current capacity.

These alternative models can be considered based on specific requirements and availability.

In conclusion, SG7812AT-883B is an integrated circuit voltage regulator that provides a stable 12V output. It offers various functional features, advantages, and disadvantages. With its wide application field and availability of alternative models, it serves as a reliable component in numerous electronic devices.