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LM2574DW-ADJR2
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LM2574DW-ADJR2

Product Overview

Category

The LM2574DW-ADJR2 belongs to the category of voltage regulators.

Use

It is commonly used to regulate and control the output voltage in electronic circuits.

Characteristics

  • Input Voltage Range: 4.5V to 40V
  • Output Voltage Range: 1.23V to 37V
  • Maximum Output Current: 0.5A
  • Efficiency: Up to 92%
  • Adjustable Output Voltage
  • Low Power Consumption
  • Thermal Shutdown Protection

Package

The LM2574DW-ADJR2 comes in a small outline package (SOIC) with eight pins.

Essence

This voltage regulator is designed to provide a stable and adjustable output voltage for various electronic applications.

Packaging/Quantity

The LM2574DW-ADJR2 is typically packaged in reels or tubes, with a quantity of 250 units per reel/tube.

Specifications

  • Input Voltage Range: 4.5V to 40V
  • Output Voltage Range: 1.23V to 37V
  • Maximum Output Current: 0.5A
  • Dropout Voltage: 0.5V (typical)
  • Quiescent Current: 10mA (typical)
  • Switching Frequency: 52kHz (typical)
  • Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The LM2574DW-ADJR2 has the following pin configuration:

  1. VIN (Input Voltage)
  2. GND (Ground)
  3. FB (Feedback)
  4. VOUT (Output Voltage)
  5. SS/TR (Soft Start/Tracking)
  6. COMP (Compensation)
  7. EN (Enable)
  8. SW (Switch)

Functional Features

  • Adjustable Output Voltage: The LM2574DW-ADJR2 allows the user to adjust the output voltage according to their specific requirements.
  • Low Power Consumption: It consumes minimal power during operation, making it suitable for battery-powered applications.
  • Thermal Shutdown Protection: The regulator includes built-in thermal shutdown protection to prevent damage due to excessive heat.

Advantages and Disadvantages

Advantages

  • Wide input voltage range allows for versatile applications.
  • Adjustable output voltage provides flexibility.
  • High efficiency helps conserve energy.
  • Compact package size saves board space.
  • Thermal shutdown protection ensures reliability.

Disadvantages

  • Limited maximum output current may not be suitable for high-power applications.
  • Switching frequency may introduce noise in sensitive circuits.

Working Principles

The LM2574DW-ADJR2 is a step-down switching voltage regulator. It operates by converting the input voltage to a lower, regulated output voltage using a switching transistor and an inductor. The feedback mechanism adjusts the duty cycle of the switching transistor to maintain the desired output voltage.

Detailed Application Field Plans

The LM2574DW-ADJR2 can be used in various applications, including: 1. Battery-powered devices 2. Automotive electronics 3. Industrial control systems 4. Telecommunications equipment 5. LED lighting systems

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the LM2574DW-ADJR2 include: 1. LM2596S-ADJ 2. LM317T 3. LT1084CP-ADJ 4. TPS5430-ADJ 5. ADP2303-ADJ

These alternatives provide different specifications and package options, allowing users to choose the most suitable option for their specific requirements.

In conclusion, the LM2574DW-ADJR2 is a versatile voltage regulator with adjustable output voltage, low power consumption, and thermal shutdown protection. Its wide range of applications, compact package size, and availability of alternative models make it a popular choice in the electronics industry.

Énumérez 10 questions et réponses courantes liées à l'application de LM2574DW-ADJR2 dans les solutions techniques

Sure! Here are 10 common questions and answers related to the application of LM2574DW-ADJR2:

  1. Q: What is LM2574DW-ADJR2? A: LM2574DW-ADJR2 is a voltage regulator IC manufactured by Texas Instruments, commonly used in power supply applications.

  2. Q: What is the input voltage range for LM2574DW-ADJR2? A: The input voltage range for LM2574DW-ADJR2 is typically between 8V and 40V.

  3. Q: What is the output voltage range for LM2574DW-ADJR2? A: The output voltage range for LM2574DW-ADJR2 can be adjusted from 1.23V to 37V using external resistors.

  4. Q: What is the maximum output current of LM2574DW-ADJR2? A: The maximum output current of LM2574DW-ADJR2 is 0.5A (500mA).

  5. Q: Can LM2574DW-ADJR2 handle both step-up and step-down voltage regulation? A: No, LM2574DW-ADJR2 is primarily designed for step-down (buck) voltage regulation.

  6. Q: Does LM2574DW-ADJR2 require an external diode for protection? A: No, LM2574DW-ADJR2 has an integrated catch diode for protection against reverse current flow.

  7. Q: Is LM2574DW-ADJR2 suitable for battery-powered applications? A: Yes, LM2574DW-ADJR2 is suitable for battery-powered applications due to its low quiescent current and high efficiency.

  8. Q: Can LM2574DW-ADJR2 operate in a wide temperature range? A: Yes, LM2574DW-ADJR2 can operate in a temperature range of -40°C to 125°C.

  9. Q: Does LM2574DW-ADJR2 have built-in overcurrent protection? A: Yes, LM2574DW-ADJR2 has built-in current limiting and thermal shutdown protection features.

  10. Q: What are some typical applications of LM2574DW-ADJR2? A: LM2574DW-ADJR2 is commonly used in various applications such as power supplies for industrial equipment, automotive electronics, LED lighting, and battery chargers.

Please note that these answers are general and may vary depending on specific design considerations and requirements.