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LM7808ACT
বিস্তারিত দেখুন ডেটাশিট

LM7808ACT

Product Overview

  • Category: Linear Voltage Regulator
  • Use: LM7808ACT is a voltage regulator that provides a fixed output voltage of 8 volts.
  • Characteristics: It has a low dropout voltage, high current capability, and thermal overload protection.
  • Package: TO-220 package
  • Essence: The LM7808ACT is designed to regulate and stabilize the input voltage to a constant 8 volts.
  • Packaging/Quantity: Available in reels or tubes, with varying quantities depending on the supplier.

Specifications

  • Input Voltage: Up to 35V
  • Output Voltage: 8V
  • Output Current: Up to 1.5A
  • Dropout Voltage: 2V (maximum)
  • Operating Temperature Range: -40°C to +125°C

Pin Configuration

The LM7808ACT has three pins:

  1. Input Pin (Pin 1): Connects to the input voltage source.
  2. Ground Pin (Pin 2): Connected to the ground reference.
  3. Output Pin (Pin 3): Provides the regulated 8V output.

Functional Features

  • Voltage Regulation: The LM7808ACT ensures a stable output voltage of 8 volts, regardless of changes in the input voltage or load conditions.
  • Low Dropout Voltage: With a maximum dropout voltage of 2V, it can regulate the output even when the input voltage is close to the desired output voltage.
  • High Current Capability: Capable of supplying up to 1.5A of current to the load.
  • Thermal Overload Protection: The LM7808ACT includes built-in thermal overload protection, which prevents damage due to excessive heat.

Advantages and Disadvantages

Advantages: - Easy to use and implement in various electronic circuits. - Provides a stable output voltage, suitable for powering sensitive components. - Offers thermal overload protection, enhancing reliability.

Disadvantages: - Generates heat during operation, requiring proper heat dissipation measures. - Limited output current compared to other voltage regulators.

Working Principles

The LM7808ACT is a linear voltage regulator that uses a series pass transistor to regulate the output voltage. It compares the output voltage with a reference voltage and adjusts the pass transistor accordingly to maintain a constant 8V output.

Detailed Application Field Plans

The LM7808ACT finds applications in various electronic devices and systems, including:

  1. Power Supply Units: Used to provide a regulated 8V power source for microcontrollers, sensors, and other electronic components.
  2. Battery Chargers: Can be used to regulate the charging voltage of batteries to 8V.
  3. Audio Amplifiers: Provides a stable power supply for audio amplifiers, ensuring consistent performance.

Detailed and Complete Alternative Models

  1. LM7805ACT: Provides a fixed output voltage of 5 volts.
  2. LM7812ACT: Provides a fixed output voltage of 12 volts.
  3. LM317T: Adjustable voltage regulator capable of providing various output voltages.

These alternative models offer different output voltages to suit specific application requirements.

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প্রযুক্তিগত সমাধানে LM7808ACT এর প্রয়োগ সম্পর্কিত 10টি সাধারণ প্রশ্ন ও উত্তর তালিকাভুক্ত করুন

Sure! Here are 10 common questions and answers related to the application of LM7808ACT in technical solutions:

  1. Q: What is LM7808ACT? A: LM7808ACT is a voltage regulator IC that provides a fixed output voltage of +8V.

  2. Q: What is the input voltage range for LM7808ACT? A: The input voltage range for LM7808ACT is typically between 10V and 35V.

  3. Q: Can LM7808ACT handle higher input voltages? A: No, exceeding the maximum input voltage can damage the IC. It is recommended to stay within the specified range.

  4. Q: How much current can LM7808ACT provide? A: LM7808ACT can provide a maximum output current of 1A.

  5. Q: Is LM7808ACT suitable for both AC and DC inputs? A: Yes, LM7808ACT can accept both AC and DC inputs, but it is commonly used with DC power sources.

  6. Q: Does LM7808ACT require any external components for operation? A: Yes, LM7808ACT requires input and output capacitors for stability and filtering purposes.

  7. Q: Can LM7808ACT be used to step up voltage? A: No, LM7808ACT is a linear voltage regulator and can only step down voltage to the desired output level.

  8. Q: Can LM7808ACT handle high temperatures? A: LM7808ACT has a maximum operating temperature of 125°C, so it can handle moderate heat levels.

  9. Q: Can LM7808ACT be used in battery-powered applications? A: Yes, LM7808ACT can be used in battery-powered applications as long as the input voltage is within the specified range.

  10. Q: Are there any alternatives to LM7808ACT for voltage regulation? A: Yes, there are other voltage regulator ICs available in the market, such as LM7805 (for +5V output) or LM7812 (for +12V output), depending on your specific requirements.

Please note that these answers are general and may vary based on specific datasheet specifications and application requirements.