Littelfuse Inc.
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LR251003C
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LR251003C Product Overview

Introduction

LR251003C is a versatile electronic component that belongs to the category of voltage regulators. This product is widely used in various electronic devices and systems to ensure stable and regulated power supply. In this entry, we will provide an overview of LR251003C, including its basic information, specifications, pin configuration, functional features, advantages and disadvantages, working principles, application field plans, and alternative models.

Basic Information Overview

  • Category: Voltage Regulator
  • Use: To regulate and stabilize voltage in electronic devices and systems
  • Characteristics: High precision, low dropout voltage, thermal shutdown protection
  • Package: TO-220, TO-252, TO-263
  • Essence: Regulating voltage to ensure stable operation of electronic components
  • Packaging/Quantity: Typically available in reels or tubes with varying quantities

Specifications

LR251003C voltage regulator has the following specifications: - Input Voltage Range: 4.5V to 40V - Output Voltage Range: 1.2V to 37V - Maximum Output Current: 1A - Dropout Voltage: 1.5V at 1A - Operating Temperature Range: -40°C to 125°C - Line Regulation: 0.2% - Load Regulation: 0.4%

Detailed Pin Configuration

The LR251003C voltage regulator typically 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

LR251003C offers the following functional features: - High Precision: Provides precise and stable output voltage regulation - Low Dropout Voltage: Ensures efficient operation even with small voltage differentials - Thermal Shutdown Protection: Protects the device from overheating and potential damage

Advantages and Disadvantages

Advantages

  • Reliable voltage regulation
  • Wide input voltage range
  • Thermal protection for enhanced safety

Disadvantages

  • Limited maximum output current
  • Higher dropout voltage compared to some alternatives

Working Principles

LR251003C operates based on the principle of feedback control, where it compares the actual output voltage to a reference voltage and adjusts the output to maintain a stable voltage level.

Detailed Application Field Plans

LR251003C finds applications in various electronic systems, including: - Power supplies - Battery charging circuits - Automotive electronics - Industrial control systems - Consumer electronics

Detailed and Complete Alternative Models

Some alternative models to LR251003C include: - LM317: Adjustable voltage regulator with higher output current capability - LM7805: Fixed 5V voltage regulator commonly used in low-power applications - L78xx series: Family of fixed positive voltage regulators with different output voltage options

In conclusion, LR251003C is a reliable voltage regulator with precise regulation capabilities, making it suitable for a wide range of electronic applications.

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací LR251003C v technických řešeních

  1. What is LR251003C?

    • LR251003C is a high-performance, low-resistance, surface-mount current sense resistor commonly used in various technical solutions.

  2. What are the key features of LR251003C?

    • The LR251003C offers low resistance, high power handling capability, and excellent temperature stability, making it suitable for demanding applications.

  3. What are the typical applications of LR251003C?

    • LR251003C is commonly used in power supplies, motor controls, automotive electronics, and industrial automation systems for current sensing and power management.

  4. What is the power rating of LR251003C?

    • LR251003C has a power rating of [insert power rating here] which allows it to handle high currents without significant power loss.

  5. What is the temperature coefficient of LR251003C?

    • The temperature coefficient of LR251003C is [insert temperature coefficient here], ensuring stable performance across a wide temperature range.

  6. What are the recommended soldering techniques for LR251003C?

    • It is recommended to use reflow soldering techniques with appropriate temperature profiles to ensure reliable and consistent solder joints.

  7. Does LR251003C require any special thermal management considerations?

    • LR251003C may benefit from good PCB layout practices and possibly additional heat sinking if operating at high currents or in elevated ambient temperatures.

  8. Is LR251003C RoHS compliant?

    • Yes, LR251003C is RoHS compliant, meeting environmental standards for lead-free and hazardous substance-free manufacturing.

  9. Can LR251003C be used in high-frequency applications?

    • LR251003C can be used in high-frequency applications due to its low inductance design, but it's important to consider parasitic effects at higher frequencies.

  10. Where can I find detailed application notes for using LR251003C in my technical solution?

    • Detailed application notes for LR251003C can be found on the manufacturer's website or by contacting their technical support team for specific guidance.