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L78M08ACDT
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L78M08ACDT

Product Overview

  • Category: Voltage Regulator
  • Use: To regulate and stabilize the output voltage in electronic circuits
  • Characteristics:
    • Fixed output voltage of 8V
    • Maximum output current of 500mA
    • Low dropout voltage
    • Thermal shutdown protection
  • Package: TO-252 (DPAK)
  • Essence: Integrated circuit voltage regulator
  • Packaging/Quantity: Available in reels or tubes, quantity depends on supplier

Specifications

  • Input Voltage Range: 10V to 35V
  • Output Voltage: 8V
  • Output Current: Up to 500mA
  • Dropout Voltage: 2V (typical)
  • Line Regulation: ±0.4% (typical)
  • Load Regulation: ±1% (typical)
  • Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The L78M08ACDT has three pins:

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

Functional Features

  • Regulates the output voltage to a fixed 8V.
  • Provides thermal shutdown protection to prevent overheating.
  • Low dropout voltage ensures efficient regulation even with low input-output voltage differentials.
  • Offers excellent line and load regulation for stable output voltage under varying conditions.

Advantages and Disadvantages

Advantages: - Simple and easy to use. - Compact size and lightweight. - Wide operating temperature range. - Provides reliable and stable output voltage.

Disadvantages: - Limited maximum output current of 500mA. - Requires external capacitors for stability.

Working Principles

The L78M08ACDT is a linear voltage regulator that uses 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 constant output voltage of 8V.

Detailed Application Field Plans

The L78M08ACDT is commonly used in various electronic applications, including:

  1. Power supply circuits for microcontrollers and other digital ICs.
  2. Battery-powered devices requiring a stable 8V power source.
  3. Automotive electronics, such as car audio systems and dashboard displays.
  4. Industrial control systems and automation equipment.
  5. Communication devices, such as routers and modems.

Detailed and Complete Alternative Models

  • LM7808: Similar fixed 8V voltage regulator from Texas Instruments.
  • MC7808: Another alternative from ON Semiconductor.
  • UA7808: Fixed 8V regulator from Fairchild Semiconductor.

These alternative models offer similar functionality and can be used as replacements for the L78M08ACDT depending on availability and specific requirements.

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací L78M08ACDT v technických řešeních

Sure! Here are 10 common questions and answers related to the application of L78M08ACDT in technical solutions:

  1. Q: What is L78M08ACDT? A: L78M08ACDT is a voltage regulator IC that provides a fixed output voltage of +8V.

  2. Q: What is the input voltage range for L78M08ACDT? A: The input voltage range for L78M08ACDT is typically between 10V and 35V.

  3. Q: What is the maximum output current of L78M08ACDT? A: The maximum output current of L78M08ACDT is 500mA.

  4. Q: Can L78M08ACDT handle higher input voltages than its output voltage? A: No, L78M08ACDT is a linear regulator and requires the input voltage to be lower than or equal to the desired output voltage.

  5. Q: Is L78M08ACDT suitable for both AC and DC input voltages? A: Yes, L78M08ACDT can accept both AC and DC input voltages.

  6. Q: Does L78M08ACDT require any external components for operation? A: Yes, L78M08ACDT requires input and output capacitors for stability and filtering.

  7. Q: Can L78M08ACDT handle short-circuit conditions? A: Yes, L78M08ACDT has built-in protection features that allow it to handle short-circuit conditions without damage.

  8. Q: What is the typical dropout voltage of L78M08ACDT? A: The typical dropout voltage of L78M08ACDT is around 2V.

  9. Q: Can L78M08ACDT be used in automotive applications? A: Yes, L78M08ACDT is suitable for automotive applications as it can handle the required voltage and current levels.

  10. Q: Are there any temperature limitations for L78M08ACDT? A: Yes, L78M08ACDT has a specified operating temperature range of -40°C to +125°C.

Please note that these answers are general and may vary depending on the specific datasheet and manufacturer recommendations for L78M08ACDT.