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LTC4274AIUHF-2#PBF
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LTC4274AIUHF-2#PBF

Product Overview

Category

The LTC4274AIUHF-2#PBF belongs to the category of power management integrated circuits (PMICs).

Use

This PMIC is primarily used for power sourcing equipment (PSE) applications in Power over Ethernet (PoE) systems.

Characteristics

  • The LTC4274AIUHF-2#PBF is a highly integrated PoE controller and PSE interface IC.
  • It supports both IEEE 802.3af and IEEE 802.3at standards for PoE.
  • This PMIC provides a complete solution for implementing a PoE PSE, including detection, classification, and current limiting functions.
  • It offers advanced features such as programmable current limits, thermal shutdown protection, and fault reporting capabilities.

Package

The LTC4274AIUHF-2#PBF comes in a small 38-lead QFN (Quad Flat No-Lead) package.

Essence

The essence of the LTC4274AIUHF-2#PBF lies in its ability to efficiently manage power delivery in PoE systems, ensuring reliable operation of connected devices.

Packaging/Quantity

This PMIC is typically sold in reels containing a quantity of 250 units per reel.

Specifications

  • Input Voltage Range: 36V to 57V
  • Output Voltage Range: 0V to 57V
  • Maximum Output Current: 600mA
  • Operating Temperature Range: -40°C to 85°C
  • Package Dimensions: 5mm x 7mm QFN

Detailed Pin Configuration

The LTC4274AIUHF-2#PBF has a total of 38 pins. Here is a detailed pin configuration:

  1. VDD
  2. VDDSENSE
  3. VDDSENSE
  4. VDDSENSE
  5. VDDSENSE
  6. VDDSENSE
  7. VDDSENSE
  8. VDDSENSE
  9. VDDSENSE
  10. VDDSENSE
  11. VDDSENSE
  12. VDDSENSE
  13. VDDSENSE
  14. VDDSENSE
  15. VDDSENSE
  16. VDDSENSE
  17. VDDSENSE
  18. VDDSENSE
  19. VDDSENSE
  20. VDDSENSE
  21. VDDSENSE
  22. VDDSENSE
  23. VDDSENSE
  24. VDDSENSE
  25. VDDSENSE
  26. VDDSENSE
  27. VDDSENSE
  28. VDDSENSE
  29. VDDSENSE
  30. VDDSENSE
  31. VDDSENSE
  32. VDDSENSE
  33. VDDSENSE
  34. VDDSENSE
  35. VDDSENSE
  36. VDDSENSE
  37. VDDSENSE
  38. GND

Functional Features

  • IEEE 802.3af/at compliant PSE controller
  • Integrated detection, classification, and current limiting functions
  • Programmable current limits for different PoE classes
  • Thermal shutdown protection
  • Fault reporting capabilities for enhanced system diagnostics

Advantages and Disadvantages

Advantages

  • Highly integrated solution for PoE PSE applications
  • Supports both IEEE 802.3af and IEEE 802.3at standards
  • Programmable current limits allow flexibility in power delivery
  • Advanced features ensure reliable and safe operation
  • Fault reporting capabilities aid in system troubleshooting

Disadvantages

  • Limited maximum output current of 600mA may not be suitable for high-power devices

Working Principles

The LTC4274AIUHF-2#PBF operates as a PoE PSE controller by detecting and classifying powered devices (PDs) connected to the system. It provides power to the PDs by delivering the appropriate current based on their classification. The PMIC also incorporates thermal shutdown protection to prevent overheating and fault reporting capabilities for system diagnostics.

Detailed Application Field Plans

The LTC4274AIUHF-2#PBF is commonly used in various applications, including: - IP cameras - Wireless access points - VoIP phones - Network switches - Industrial automation equipment

Detailed and Complete Alternative Models

  1. LTC4274A-1#PBF
  2. LTC4274A-2#PBF
  3. LTC4274IUF-1#PBF
  4. LTC4274IUF-2#PBF
  5. LTC4274IUHF-1#PBF

These alternative models offer similar functionality and features to the LTC4274AIUHF-2#PBF, providing flexibility in choosing the most suitable PM

Перечислите 10 распространенных вопросов и ответов, связанных с применением LTC4274AIUHF-2#PBF в технических решениях.

Sure! Here are 10 common questions and answers related to the application of LTC4274AIUHF-2#PBF in technical solutions:

  1. Q: What is LTC4274AIUHF-2#PBF? A: LTC4274AIUHF-2#PBF is a specific model of Power over Ethernet (PoE) controller IC manufactured by Analog Devices.

  2. Q: What is the purpose of LTC4274AIUHF-2#PBF? A: The LTC4274AIUHF-2#PBF is designed to provide power and data connectivity to PoE-enabled devices, such as IP cameras, wireless access points, and VoIP phones.

  3. Q: What are the key features of LTC4274AIUHF-2#PBF? A: Some key features include IEEE 802.3af/at/bt compatibility, integrated power management, advanced fault protection, and support for various power sourcing equipment (PSE) configurations.

  4. Q: How does LTC4274AIUHF-2#PBF enable Power over Ethernet? A: LTC4274AIUHF-2#PBF integrates the necessary circuitry to extract power from an Ethernet cable and regulate it to provide the required voltage and current levels to the connected device.

  5. Q: Can LTC4274AIUHF-2#PBF be used with both 10/100Mbps and Gigabit Ethernet networks? A: Yes, LTC4274AIUHF-2#PBF is compatible with both 10/100Mbps and Gigabit Ethernet networks.

  6. Q: What is the maximum power that LTC4274AIUHF-2#PBF can deliver to a PoE device? A: LTC4274AIUHF-2#PBF can deliver up to 90W of power, depending on the PSE configuration and the device's power requirements.

  7. Q: Does LTC4274AIUHF-2#PBF support power management features? A: Yes, LTC4274AIUHF-2#PBF includes various power management features such as programmable current limits, thermal shutdown protection, and power-good monitoring.

  8. Q: Can LTC4274AIUHF-2#PBF be used in industrial applications? A: Yes, LTC4274AIUHF-2#PBF is designed to operate reliably in industrial environments and supports extended temperature ranges.

  9. Q: Are there any evaluation boards or reference designs available for LTC4274AIUHF-2#PBF? A: Yes, Analog Devices provides evaluation boards and reference designs that can help developers quickly prototype and integrate LTC4274AIUHF-2#PBF into their applications.

  10. Q: Where can I find more technical information about LTC4274AIUHF-2#PBF? A: You can find detailed technical information, datasheets, application notes, and other resources on the Analog Devices website or by contacting their technical support team.