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L78M12ACDT-TR
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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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Noem 10 veelgestelde vragen en antwoorden met betrekking tot de toepassing van L78M12ACDT-TR in technische oplossingen

Sure! Here are 10 common questions and answers related to the application of L78M12ACDT-TR in technical solutions:

  1. Q: What is L78M12ACDT-TR? A: L78M12ACDT-TR is a voltage regulator IC that provides a fixed output voltage of +12V.

  2. Q: What is the input voltage range for L78M12ACDT-TR? A: The input voltage range for L78M12ACDT-TR is typically between 14V and 35V.

  3. Q: What is the maximum output current of L78M12ACDT-TR? A: The maximum output current of L78M12ACDT-TR is 500mA.

  4. Q: Can L78M12ACDT-TR handle higher input voltages than 35V? A: No, exceeding the maximum input voltage can damage the IC. It is recommended to stay within the specified range.

  5. Q: Is L78M12ACDT-TR suitable for both AC and DC input voltages? A: Yes, L78M12ACDT-TR can handle both AC and DC input voltages.

  6. Q: Does L78M12ACDT-TR require any external components for operation? A: Yes, L78M12ACDT-TR requires input and output capacitors for stable operation. Refer to the datasheet for recommended values.

  7. Q: Can L78M12ACDT-TR be used in automotive applications? A: Yes, L78M12ACDT-TR is designed to meet automotive specifications and can be used in automotive applications.

  8. Q: What is the thermal resistance of L78M12ACDT-TR? A: The thermal resistance of L78M12ACDT-TR is typically 50°C/W.

  9. Q: Can L78M12ACDT-TR be used in high-temperature environments? A: Yes, L78M12ACDT-TR has a maximum operating temperature of 125°C, making it suitable for high-temperature environments.

  10. Q: Is L78M12ACDT-TR available in different package options? A: Yes, L78M12ACDT-TR is available in various package options such as TO-220, TO-252, and DPAK.