Linear Technology/QD Devices
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LTC3867IUF#PBF
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LTC3867IUF#PBF

Product Overview

Category: Integrated Circuit (IC)

Use: Power Management IC

Characteristics: - High Efficiency - Wide Input Voltage Range - Synchronous Buck Controller - Adjustable Output Voltage - Current Mode Control - Programmable Soft-Start - Overvoltage Protection - Undervoltage Lockout - Thermal Shutdown - Fault Flag Indication

Package: 4mm x 5mm QFN-28

Essence: The LTC3867IUF#PBF is a high-performance synchronous buck controller designed for power management applications. It offers a wide input voltage range and adjustable output voltage, making it suitable for various power supply designs.

Packaging/Quantity: The LTC3867IUF#PBF is available in a QFN-28 package. It is typically sold in reels of 2500 units.

Specifications

  • Input Voltage Range: 4.5V to 38V
  • Output Voltage Range: 0.6V to VIN
  • Switching Frequency: Up to 2MHz
  • Maximum Duty Cycle: 95%
  • Operating Temperature Range: -40°C to 125°C
  • Quiescent Current: 60µA

Pin Configuration

The LTC3867IUF#PBF has a total of 28 pins. The pin configuration is as follows:

  1. VIN
  2. GND
  3. FB
  4. SS
  5. SYNC
  6. VCC
  7. PGND
  8. SW
  9. SW
  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 Power Conversion
  • Adjustable Output Voltage
  • Current Mode Control for Enhanced Stability
  • Programmable Soft-Start for Controlled Startup
  • Overvoltage Protection to Safeguard the Circuit
  • Undervoltage Lockout for Reliable Operation
  • Thermal Shutdown to Prevent Overheating
  • Fault Flag Indication for Easy Troubleshooting

Advantages and Disadvantages

Advantages: - Wide input voltage range allows for versatile applications - High efficiency results in reduced power loss - Synchronous buck controller provides efficient power conversion - Adjustable output voltage accommodates different requirements - Comprehensive protection features enhance reliability

Disadvantages: - Limited maximum duty cycle may restrict certain applications - Higher quiescent current compared to some alternative models

Working Principles

The LTC3867IUF#PBF operates as a synchronous buck controller, regulating the output voltage based on the feedback received from the FB pin. It utilizes current mode control to ensure stability and efficiency during power conversion. The soft-start feature allows for controlled startup, preventing excessive inrush current. The IC incorporates various protection mechanisms such as overvoltage protection, undervoltage lockout, and thermal shutdown to safeguard the circuit and components.

Detailed Application Field Plans

The LTC3867IUF#PBF is commonly used in the following application fields:

  1. Power Supplies for Industrial Equipment
  2. Automotive Electronics
  3. Telecommunications Systems
  4. Data Centers and Servers
  5. Portable Electronic Devices

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the LTC3867IUF#PBF include:

  1. LT8610ABEUJ#PBF
  2. TPS54332DDAR
  3. MAX15062AASA+
  4. ADP2386ACPZ-2.5-R7
  5. ISL8018IRAJZ-T

These models can be considered as alternatives based on specific requirements and design considerations.

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Liệt kê 10 câu hỏi và câu trả lời thường gặp liên quan đến ứng dụng LTC3867IUF#PBF trong giải pháp kỹ thuật

Sure! Here are 10 common questions and answers related to the application of LTC3867IUF#PBF in technical solutions:

  1. Q: What is LTC3867IUF#PBF? A: LTC3867IUF#PBF is a specific model number for a power management integrated circuit (PMIC) developed by Linear Technology (now part of Analog Devices). It is designed for use in various technical solutions.

  2. Q: What are the key features of LTC3867IUF#PBF? A: The LTC3867IUF#PBF PMIC offers features like high efficiency, wide input voltage range, multiple output channels, programmable soft-start, fault protection, and more.

  3. Q: In what applications can LTC3867IUF#PBF be used? A: LTC3867IUF#PBF can be used in a wide range of applications including industrial automation, telecommunications, automotive systems, data centers, and other power management solutions.

  4. Q: What is the maximum input voltage supported by LTC3867IUF#PBF? A: LTC3867IUF#PBF supports a wide input voltage range from 4.5V to 60V, making it suitable for various power supply designs.

  5. Q: How many output channels does LTC3867IUF#PBF have? A: LTC3867IUF#PBF has two independent synchronous buck converters, each capable of providing a regulated output voltage.

  6. Q: Can LTC3867IUF#PBF handle high current loads? A: Yes, LTC3867IUF#PBF is designed to handle high current loads with its integrated power MOSFETs, allowing it to deliver significant power to connected devices.

  7. Q: Does LTC3867IUF#PBF offer any protection features? A: Yes, LTC3867IUF#PBF provides various protection features like overvoltage protection (OVP), overcurrent protection (OCP), and thermal shutdown to ensure safe operation.

  8. Q: Is LTC3867IUF#PBF programmable? A: Yes, LTC3867IUF#PBF offers programmable soft-start functionality, allowing users to control the startup behavior of the power supply.

  9. Q: Can LTC3867IUF#PBF be used in battery-powered applications? A: Yes, LTC3867IUF#PBF can be used in battery-powered applications as it supports a wide input voltage range and offers high efficiency, which helps conserve battery life.

  10. Q: Where can I find more information about LTC3867IUF#PBF? A: You can find more detailed information about LTC3867IUF#PBF, including datasheets, application notes, and technical support, on the Analog Devices website or by contacting their customer support team.