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L78L05CD
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L78L05CD

Basic Information Overview

  • Category: Integrated Circuit (IC)
  • Use: Voltage Regulator
  • Characteristics: Low voltage, linear regulator
  • Package: TO-252 (DPAK)
  • Essence: Monolithic integrated circuit
  • Packaging/Quantity: Tape and reel, 2,500 units per reel

Specifications

  • Input Voltage Range: 7V to 35V
  • Output Voltage: 5V
  • Output Current: 100mA
  • Dropout Voltage: 2V
  • Quiescent Current: 4.5mA
  • Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The L78L05CD 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

  • Voltage Regulation: The L78L05CD regulates the input voltage to a stable 5V output.
  • Low Dropout: With a dropout voltage of only 2V, it can operate efficiently even with low input voltages.
  • Thermal Overload Protection: The IC incorporates thermal shutdown circuitry to prevent damage due to excessive heat.
  • Short Circuit Protection: It includes current limiting and short circuit protection to safeguard against overloads.

Advantages and Disadvantages

Advantages: - Compact Size: The monolithic design allows for a small form factor. - Easy to Use: Requires minimal external components for operation. - Cost-Effective: Offers a cost-effective solution for voltage regulation.

Disadvantages: - Limited Output Current: The maximum output current is limited to 100mA. - Heat Dissipation: Due to its linear regulation, it may generate significant heat when dropping voltage.

Working Principles

The L78L05CD 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 stable 5V output.

Detailed Application Field Plans

The L78L05CD finds applications in various fields, including: 1. Consumer Electronics: Used in portable devices, such as smartphones, tablets, and digital cameras. 2. Automotive: Provides regulated power for automotive electronics, including infotainment systems and sensors. 3. Industrial Control Systems: Used in control panels, motor drives, and power supplies for industrial automation. 4. Telecommunications: Provides regulated voltage for communication equipment, such as routers and switches.

Detailed and Complete Alternative Models

  1. LM7805: A popular alternative from Texas Instruments with similar specifications.
  2. MC78L05: Another alternative from ON Semiconductor offering comparable performance.
  3. UA78L05: An alternative from Fairchild Semiconductor with similar characteristics.

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技術ソリューションにおける L78L05CD の適用に関連する 10 件の一般的な質問と回答をリストします。

Sure! Here are 10 common questions and answers related to the application of L78L05CD in technical solutions:

  1. Q: What is L78L05CD? A: L78L05CD is a voltage regulator IC that provides a fixed 5V output voltage.

  2. Q: What is the maximum input voltage for L78L05CD? A: The maximum input voltage for L78L05CD is typically around 35V.

  3. Q: What is the maximum output current of L78L05CD? A: The maximum output current of L78L05CD is 100mA.

  4. Q: Can L78L05CD be used to regulate voltages other than 5V? A: No, L78L05CD is specifically designed to provide a fixed 5V output.

  5. Q: Is L78L05CD suitable for low-power applications? A: Yes, L78L05CD is commonly used in low-power applications such as microcontrollers, sensors, and small electronic devices.

  6. Q: Does L78L05CD require any external components for operation? A: Yes, L78L05CD requires input and output capacitors for stability and filtering purposes.

  7. Q: Can L78L05CD handle reverse polarity protection? A: No, L78L05CD does not have built-in reverse polarity protection. External circuitry should be used for reverse polarity protection if required.

  8. Q: What is the typical dropout voltage of L78L05CD? A: The typical dropout voltage of L78L05CD is around 2V.

  9. Q: Can L78L05CD handle high temperatures? A: L78L05CD has a maximum operating temperature of 125°C, making it suitable for most applications.

  10. Q: Is L78L05CD available in different package types? A: Yes, L78L05CD is available in various package types such as TO-92, SO-8, and DPAK, allowing flexibility in design and mounting options.

Please note that the answers provided here are general and may vary depending on the specific datasheet and manufacturer's specifications for L78L05CD.