MC78L12ACPG

Basic Information Overview

• Category: Linear Voltage Regulator
• Use: Provides a stable output voltage of +12V
• Characteristics: Low dropout voltage, high accuracy, and low quiescent current
• Package: TO-92, 3-pin package
• Essence: Integrated circuit (IC) voltage regulator
• Packaging/Quantity: Available in tape and reel packaging, quantity varies based on supplier

Specifications

• Output Voltage: +12V
• Input Voltage Range: 14.5V to 35V
• Dropout Voltage: 2V (maximum)
• Quiescent Current: 5mA (maximum)
• Line Regulation: 0.04%/V (typical)
• Load Regulation: 0.1% (typical)
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

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 MC78L12ACPG regulates the input voltage to a stable +12V output.
• Low Dropout Voltage: It has a low dropout voltage, ensuring efficient operation even with small input-output voltage differentials.
• High Accuracy: The device provides high accuracy in maintaining the output voltage within specified limits.
• Low Quiescent Current: The regulator consumes low quiescent current, minimizing power dissipation.

Advantages and Disadvantages

Advantages

• Compact Size: The TO-92 package makes it suitable for space-constrained applications.
• Easy to Use: Requires minimal external components for operation.
• Cost-effective: Offers an affordable solution for voltage regulation needs.

Disadvantages

• Limited Output Current: The MC78L12ACPG has a maximum output current rating, which may restrict its use in high-power applications.
• Heat Dissipation: In high current or high voltage drop scenarios, the regulator may generate significant heat, requiring proper thermal management.

Working Principles

The MC78L12ACPG is a linear voltage regulator that utilizes 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 +12V output.

Detailed Application Field Plans

The MC78L12ACPG finds applications in various electronic devices and systems, including: 1. Power Supplies: Used as a voltage regulator in low-power DC power supplies. 2. Automotive Electronics: Provides regulated voltage for automotive sensors, actuators, and control modules. 3. Consumer Electronics: Used in audio/video equipment, set-top boxes, and other low-power devices. 4. Industrial Control Systems: Suitable for regulating voltage in industrial automation and control systems. 5. Telecommunications: Used in telecommunication equipment for voltage regulation.

Detailed and Complete Alternative Models

1. LM7812: A popular alternative from Texas Instruments with similar specifications and pin configuration.
2. UA7812: An alternative from Fairchild Semiconductor offering comparable performance.
3. L78L12ABD: A low dropout voltage regulator from STMicroelectronics, suitable for similar applications.

Note: This entry provides an overview of the MC78L12ACPG. For detailed information, refer to the datasheet provided by the manufacturer.

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