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IRU431LCL5TR
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IRU431LCL5TR

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Regulator

Characteristics: - Low Dropout Voltage - High Output Current - Adjustable Output Voltage - Thermal Shutdown Protection - Short Circuit Protection

Package: SOT-23-5

Essence: The IRU431LCL5TR is a voltage regulator IC that provides a stable output voltage for various electronic devices.

Packaging/Quantity: Available in tape and reel packaging with 3000 units per reel.

Specifications

  • Input Voltage Range: 2.5V to 6.5V
  • Output Voltage Range: 1.25V to 5.5V
  • Dropout Voltage: 200mV at 150mA
  • Output Current: Up to 150mA
  • Quiescent Current: 120µA
  • Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The IRU431LCL5TR has a total of five pins:

  1. GND (Ground): Connected to the ground reference of the circuit.
  2. ADJ (Adjust): Used to adjust the output voltage by connecting an external resistor divider network.
  3. VOUT (Output Voltage): Provides the regulated output voltage.
  4. VIN (Input Voltage): Receives the input voltage to be regulated.
  5. NC (No Connection): This pin is not connected and should be left unconnected.

Functional Features

  • Low Dropout Voltage: The IRU431LCL5TR exhibits a low dropout voltage, allowing it to regulate the output voltage even when the input voltage is close to the desired output voltage.
  • High Output Current: With a maximum output current of 150mA, this voltage regulator can power a wide range of electronic components.
  • Adjustable Output Voltage: The output voltage can be adjusted using an external resistor divider network connected to the ADJ pin.
  • Thermal Shutdown Protection: The IC incorporates thermal shutdown protection, which prevents damage due to excessive temperature.
  • Short Circuit Protection: The IRU431LCL5TR is equipped with short circuit protection, safeguarding the device and the connected circuitry.

Advantages and Disadvantages

Advantages: - Low dropout voltage ensures efficient regulation. - Adjustable output voltage provides flexibility for various applications. - Thermal shutdown and short circuit protection enhance reliability and safety.

Disadvantages: - Limited maximum output current may restrict usage in high-power applications. - Requires an external resistor divider network for output voltage adjustment.

Working Principles

The IRU431LCL5TR operates as a linear voltage regulator. It compares the reference voltage (1.25V) with the divided feedback voltage from the external resistor network. Based on this comparison, the internal control circuit adjusts the pass transistor to maintain a stable output voltage.

Detailed Application Field Plans

The IRU431LCL5TR finds applications in various electronic devices, including but not limited to: - Battery-powered devices - Portable audio players - Mobile phones - Digital cameras - Wireless communication systems

Detailed and Complete Alternative Models

  1. LM1117-ADJ: Adjustable Voltage Regulator, SOT-223 package, 800mA output current.
  2. LT1763-ADJ: Adjustable Voltage Regulator, SOT-23 package, 500mA output current.
  3. MCP1700T-3302E/TT: Fixed Voltage Regulator, SOT-23 package, 250mA output current.

These alternative models offer similar functionality and can be considered as substitutes for the IRU431LCL5TR in different applications.

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Wymień 10 typowych pytań i odpowiedzi związanych z zastosowaniem IRU431LCL5TR w rozwiązaniach technicznych

Sure! Here are 10 common questions and answers related to the application of IRU431LCL5TR in technical solutions:

  1. Question: What is the IRU431LCL5TR?
    Answer: The IRU431LCL5TR is a voltage regulator IC (integrated circuit) used for power management in various electronic devices.

  2. Question: What is the input voltage range of the IRU431LCL5TR?
    Answer: The input voltage range of the IRU431LCL5TR is typically between 2.5V and 18V.

  3. Question: What is the output voltage range of the IRU431LCL5TR?
    Answer: The output voltage range of the IRU431LCL5TR can be adjusted from 1.25V to 16V using external resistors.

  4. Question: What is the maximum output current of the IRU431LCL5TR?
    Answer: The maximum output current of the IRU431LCL5TR is 1A, making it suitable for low to medium power applications.

  5. Question: Is the IRU431LCL5TR a linear or switching regulator?
    Answer: The IRU431LCL5TR is a linear regulator, which means it provides a stable output voltage by dissipating excess energy as heat.

  6. Question: Can the IRU431LCL5TR handle high temperatures?
    Answer: Yes, the IRU431LCL5TR is designed to operate at high temperatures, with a maximum junction temperature of 150°C.

  7. Question: Does the IRU431LCL5TR have built-in protection features?
    Answer: Yes, the IRU431LCL5TR includes overcurrent protection, thermal shutdown, and short-circuit protection to ensure safe operation.

  8. Question: What is the typical dropout voltage of the IRU431LCL5TR?
    Answer: The typical dropout voltage of the IRU431LCL5TR is around 1.3V, which means the input voltage must be at least 1.3V higher than the desired output voltage.

  9. Question: Can the IRU431LCL5TR be used in battery-powered applications?
    Answer: Yes, the low quiescent current and wide input voltage range make the IRU431LCL5TR suitable for battery-powered devices.

  10. Question: Are there any application notes or reference designs available for the IRU431LCL5TR?
    Answer: Yes, the manufacturer provides application notes and reference designs that can help with the implementation of the IRU431LCL5TR in various technical solutions.

Please note that the answers provided here are general and may vary depending on specific datasheet specifications and application requirements.