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IRU431ALCSTR
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IRU431ALCSTR

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Regulator

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

Package: LQFP-32

Essence: The IRU431ALCSTR is a voltage regulator IC that provides a stable output voltage by regulating the input voltage.

Packaging/Quantity: The IRU431ALCSTR is available in a LQFP-32 package and is typically sold in reels of 2500 units.

Specifications

  • Input Voltage Range: 2.5V to 18V
  • Output Voltage Range: 1.25V to 16V
  • Dropout Voltage: 0.4V at 1A
  • Output Current: Up to 1A
  • Quiescent Current: 100µA
  • Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The IRU431ALCSTR has a total of 32 pins, which are assigned specific functions. Here is the detailed pin configuration:

  1. VOUT: Output Voltage
  2. GND: Ground
  3. FB: Feedback Pin
  4. EN: Enable Pin
  5. VIN: Input Voltage
  6. NC: No Connection
  7. NC: No Connection
  8. NC: No Connection
  9. NC: No Connection
  10. NC: No Connection
  11. NC: No Connection
  12. NC: No Connection
  13. NC: No Connection
  14. NC: No Connection
  15. NC: No Connection
  16. NC: No Connection
  17. NC: No Connection
  18. NC: No Connection
  19. NC: No Connection
  20. NC: No Connection
  21. NC: No Connection
  22. NC: No Connection
  23. NC: No Connection
  24. NC: No Connection
  25. NC: No Connection
  26. NC: No Connection
  27. NC: No Connection
  28. NC: No Connection
  29. NC: No Connection
  30. NC: No Connection
  31. NC: No Connection
  32. NC: No Connection

Functional Features

  • Low dropout voltage ensures efficient regulation even with small input-output voltage differentials.
  • High output current capability allows for powering a wide range of loads.
  • Adjustable output voltage provides flexibility in various applications.
  • Thermal shutdown protection prevents the IC from overheating and damaging itself.

Advantages and Disadvantages

Advantages: - Low dropout voltage results in minimal power dissipation. - High output current enables the use of the IC in demanding applications. - Adjustable output voltage accommodates different voltage requirements. - Thermal shutdown protection enhances reliability and safety.

Disadvantages: - Limited pin configuration options may restrict certain circuit designs. - The LQFP-32 package may not be suitable for space-constrained applications.

Working Principles

The IRU431ALCSTR operates as a linear voltage regulator. It compares the output voltage with a reference voltage and adjusts the pass transistor to maintain a stable output voltage. When the input voltage drops below the desired output voltage, the regulator increases the pass transistor's resistance to compensate for the difference, ensuring a constant output voltage.

Detailed Application Field Plans

The IRU431ALCSTR can be used in various applications that require voltage regulation, such as: 1. Power supplies for microcontrollers and other digital circuits. 2. Battery-powered devices requiring stable voltage levels. 3. Automotive electronics, including infotainment systems and engine control units. 4. Industrial automation systems, where precise voltage regulation is crucial. 5. Communication equipment, such as routers and modems.

Detailed and Complete Alternative Models

  1. LM317: Adjustable Voltage Regulator
  2. LT1083: Low Dropout Positive Fixed Voltage Regulator
  3. LM7805: 5V Fixed Voltage Regulator
  4. LM1117: Low Dropout Linear Regulator
  5. MAX667: High-Efficiency, Step-Down DC-DC Converter

These alternative models offer similar functionality to the IRU431ALCSTR and can be considered as alternatives based on specific requirements and design constraints.

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技術ソリューションにおける IRU431ALCSTR 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 IRU431ALCSTR in technical solutions:

  1. Q: What is IRU431ALCSTR? A: IRU431ALCSTR is a voltage reference IC (integrated circuit) commonly used in technical solutions for providing stable and accurate voltage references.

  2. Q: What is the operating voltage range of IRU431ALCSTR? A: The operating voltage range of IRU431ALCSTR is typically between 1.24V and 18V.

  3. Q: How accurate is the voltage reference provided by IRU431ALCSTR? A: IRU431ALCSTR provides a high level of accuracy, typically within ±1%.

  4. Q: Can IRU431ALCSTR be used in battery-powered applications? A: Yes, IRU431ALCSTR can be used in battery-powered applications as it operates within a wide voltage range and has low power consumption.

  5. Q: What is the temperature range in which IRU431ALCSTR can operate? A: IRU431ALCSTR can operate within a temperature range of -40°C to +125°C, making it suitable for various environments.

  6. Q: How much current can IRU431ALCSTR source or sink? A: IRU431ALCSTR can source or sink up to 100mA of current, making it suitable for many low-power applications.

  7. Q: Is IRU431ALCSTR a fixed or adjustable voltage reference? A: IRU431ALCSTR is a fixed voltage reference, meaning its output voltage is set at a specific value (e.g., 1.24V).

  8. Q: Can multiple IRU431ALCSTR ICs be used in parallel to increase current capability? A: Yes, multiple IRU431ALCSTR ICs can be used in parallel to increase the current sourcing or sinking capability.

  9. Q: What are some typical applications of IRU431ALCSTR? A: IRU431ALCSTR is commonly used in precision voltage regulators, power supplies, battery chargers, and other electronic circuits requiring stable voltage references.

  10. Q: Is IRU431ALCSTR available in different package options? A: Yes, IRU431ALCSTR is available in various package options, such as SOT-23, TO-92, and SOIC, providing flexibility for different PCB layouts and assembly processes.

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