Linear Technology/QD Devices
画像はイメージの場合もございます。
商品詳細は仕様をご覧ください。
LT3745EUJ-1#PBF
詳細を表示 DataSheets

LT3745EUJ-1#PBF

Introduction

The LT3745EUJ-1#PBF is a high-performance synchronous step-down DC/DC controller designed for use in various power supply applications. This component offers a wide range of features and characteristics that make it suitable for a variety of electronic devices.

Basic Information Overview

  • Category: Power Management IC
  • Use: Synchronous Step-Down DC/DC Controller
  • Characteristics: High Performance, Wide Input Voltage Range, Synchronous Rectification
  • Package: 4mm x 5mm QFN-28
  • Essence: Efficient Power Conversion
  • Packaging/Quantity: Tape & Reel, 2500 units per reel

Specifications

  • Input Voltage Range: 4.5V to 60V
  • Output Voltage Range: 0.8V to 24V
  • Switching Frequency: Up to 2MHz
  • Operating Temperature Range: -40°C to 125°C
  • Control Type: Current Mode Control
  • Synchronization: Yes
  • Protection Features: Overvoltage, Undervoltage, Overcurrent, Thermal Shutdown

Detailed Pin Configuration

The LT3745EUJ-1#PBF features a 28-pin QFN package with the following pin configuration: 1. VIN 2. VCC 3. GND 4. FB 5. SS/TR/UVLO 6. SYNC/MODE 7. RT/CLKOUT 8. CLKIN 9. PGND 10. SW 11. SW 12. SW 13. SW 14. SW 15. SW 16. SW 17. SW 18. SW 19. SW 20. SW 21. SW 22. SW 23. SW 24. SW 25. SW 26. SW 27. SW 28. SW

Functional Features

  • High Efficiency: The LT3745EUJ-1#PBF offers high efficiency over a wide input voltage range, making it suitable for various power supply designs.
  • Wide Input Voltage Range: With an input voltage range of 4.5V to 60V, this controller can be used in diverse applications.
  • Synchronous Rectification: The synchronous rectification feature improves overall efficiency and reduces power loss.

Advantages and Disadvantages

Advantages

  • High Efficiency
  • Wide Input Voltage Range
  • Synchronous Rectification
  • Comprehensive Protection Features

Disadvantages

  • Higher Component Cost Compared to Non-Synchronous Controllers
  • More Complex Design Considerations

Working Principles

The LT3745EUJ-1#PBF operates on the principle of synchronous step-down conversion, where it efficiently regulates the input voltage to a lower output voltage while minimizing power loss through synchronous rectification.

Detailed Application Field Plans

The LT3745EUJ-1#PBF is well-suited for a wide range of applications, including: - Industrial Power Supplies - Automotive Electronics - Telecommunications Equipment - LED Lighting Systems - Renewable Energy Systems

Detailed and Complete Alternative Models

Some alternative models to the LT3745EUJ-1#PBF include: - LT3746 - LT3747 - LT3748 - LT3750

In conclusion, the LT3745EUJ-1#PBF is a versatile and high-performance synchronous step-down DC/DC controller with a wide range of applications and features, making it an ideal choice for various power supply designs.

Word Count: 470

技術ソリューションにおける LT3745EUJ-1#PBF 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。

  1. What is the input voltage range of LT3745EUJ-1#PBF?

    • The input voltage range of LT3745EUJ-1#PBF is 4.5V to 60V.

  2. What is the maximum output current of LT3745EUJ-1#PBF?

    • The maximum output current of LT3745EUJ-1#PBF is typically 3A.

  3. What is the switching frequency range of LT3745EUJ-1#PBF?

    • The switching frequency range of LT3745EUJ-1#PBF is from 100kHz to 1MHz.

  4. Can LT3745EUJ-1#PBF be used in automotive applications?

    • Yes, LT3745EUJ-1#PBF is suitable for automotive applications.

  5. What are the key features of LT3745EUJ-1#PBF?

    • Some key features of LT3745EUJ-1#PBF include a wide input voltage range, high efficiency synchronous operation, and adjustable switching frequency.

  6. Does LT3745EUJ-1#PBF have built-in protection features?

    • Yes, LT3745EUJ-1#PBF includes various protection features such as overvoltage protection, overcurrent protection, and thermal shutdown.

  7. What type of package does LT3745EUJ-1#PBF come in?

    • LT3745EUJ-1#PBF is available in a 20-Lead eTSSOP package.

  8. Is LT3745EUJ-1#PBF suitable for LED lighting applications?

    • Yes, LT3745EUJ-1#PBF is commonly used in LED lighting applications due to its high efficiency and adjustable switching frequency.

  9. Can LT3745EUJ-1#PBF be used in industrial control systems?

    • Yes, LT3745EUJ-1#PBF is well-suited for industrial control systems and other industrial applications.

  10. What are the typical application circuits for LT3745EUJ-1#PBF?

    • Typical application circuits for LT3745EUJ-1#PBF include LED driver circuits, automotive power supplies, and general-purpose step-down converters.