L78M12ACDT-TR

Product Overview

Category

L78M12ACDT-TR belongs to the category of voltage regulators.

Use

It is primarily used to regulate and stabilize voltage in electronic circuits.

Characteristics

• Input Voltage Range: 14V to 35V
• Output Voltage: 12V
• Maximum Output Current: 500mA
• Dropout Voltage: 2V
• Operating Temperature Range: -40°C to +125°C
• Package Type: DPAK (TO-252)
• Essence: Linear voltage regulator

Packaging/Quantity

L78M12ACDT-TR is available in tape and reel packaging. Each reel contains 2500 units.

Specifications

• Output Voltage Accuracy: ±4%
• Line Regulation: 50mV
• Load Regulation: 100mV
• Quiescent Current: 5mA
• Ripple Rejection Ratio: 62dB
• Thermal Shutdown Protection: Yes
• Short Circuit Protection: Yes

Detailed Pin Configuration

L78M12ACDT-TR has three pins:

1. Input (VIN): This pin is connected to the input voltage source.
2. Ground (GND): This pin is connected to the ground reference.
3. Output (VOUT): This pin provides the regulated output voltage.

Functional Features

• Voltage Regulation: The L78M12ACDT-TR ensures a stable output voltage of 12V, regardless of variations in the input voltage.
• Thermal Shutdown Protection: It incorporates a thermal shutdown mechanism that protects the device from overheating.
• Short Circuit Protection: The regulator automatically shuts down in case of a short circuit, preventing damage to the circuitry.

Advantages and Disadvantages

Advantages

• Simple and reliable voltage regulation solution.
• Wide input voltage range allows for versatile applications.
• Compact package size makes it suitable for space-constrained designs.

Disadvantages

• Limited maximum output current of 500mA may not be sufficient for high-power applications.
• Dropout voltage of 2V may result in higher power dissipation.

Working Principles

L78M12ACDT-TR is a linear voltage regulator that uses a series pass transistor to regulate the output voltage. It operates by comparing the output voltage with a reference voltage and adjusting the pass transistor accordingly to maintain a constant output voltage.

Detailed Application Field Plans

The L78M12ACDT-TR can be used in various electronic applications, including: 1. Power supplies for microcontrollers and other digital ICs. 2. Automotive electronics. 3. Industrial control systems. 4. Battery charging circuits. 5. Audio amplifiers.

Detailed and Complete Alternative Models

1. LM7812: This is a popular alternative from Texas Instruments with similar specifications.
2. MC7812: Another alternative from ON Semiconductor offering comparable performance.
3. UA7812: A voltage regulator from Fairchild Semiconductor that can be used as an alternative.

These alternatives provide similar functionality and can be used as drop-in replacements for the L78M12ACDT-TR.

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