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LTC4290BIUJ#TRPBF
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LTC4290BIUJ#TRPBF

Product Overview

Category: Integrated Circuit (IC)

Use: Power over Ethernet (PoE) Controller

Characteristics: - Provides power and data to PoE-enabled devices - Supports IEEE 802.3af/at standards - Enables power management and control in PoE systems

Package: 32-Lead QFN (Quad Flat No-Lead) package

Essence: The LTC4290BIUJ#TRPBF is a highly integrated PoE controller designed for use in Power Sourcing Equipment (PSE) applications.

Packaging/Quantity: Available in tape and reel packaging with 250 units per reel.

Specifications

  • Input Voltage Range: 36V to 57V
  • Output Voltage Range: 44V to 57V
  • Maximum Output Current: 600mA
  • Operating Temperature Range: -40°C to 85°C
  • Package Dimensions: 5mm x 5mm

Detailed Pin Configuration

The LTC4290BIUJ#TRPBF features a 32-lead QFN package with the following pin configuration:

  1. VDD - Power supply input
  2. GND - Ground
  3. INT - Interrupt output
  4. FLT - Fault output
  5. EN - Enable input
  6. MDI - Medium Dependent Interface input
  7. MDO - Medium Dependent Interface output
  8. TXEN - Transmit Enable output
  9. RXD - Receive Data input
  10. TXD - Transmit Data output
  11. AUX - Auxiliary output
  12. PWRGD - Power Good output
  13. REF - Reference voltage input
  14. VEE - Negative power supply input
  15. VCC - Positive power supply input
  16. NC - No connection
  17. NC - No connection
  18. NC - No connection
  19. NC - No connection
  20. NC - No connection
  21. NC - No connection
  22. NC - No connection
  23. NC - No connection
  24. NC - No connection
  25. NC - No connection
  26. NC - No connection
  27. NC - No connection
  28. NC - No connection
  29. NC - No connection
  30. NC - No connection
  31. NC - No connection
  32. NC - No connection

Functional Features

  • Integrated IEEE 802.3af/at compliant PoE controller
  • Supports both Mode A and Mode B operation
  • Provides detection, classification, and power management functions
  • Offers programmable current limit and inrush current control
  • Includes fault protection features such as overcurrent and overtemperature shutdown

Advantages and Disadvantages

Advantages: - Highly integrated solution for PoE applications - Supports industry-standard IEEE 802.3af/at protocols - Programmable features allow customization for specific system requirements - Comprehensive fault protection ensures reliable operation

Disadvantages: - Limited output current capability (600mA) - Requires external components for complete PSE implementation - Relatively small package size may pose challenges for certain assembly processes

Working Principles

The LTC4290BIUJ#TRPBF operates as a Power Sourcing Equipment (PSE) controller in a Power over Ethernet (PoE) system. It integrates the necessary functions to provide power and data to PoE-enabled devices. The controller follows the IEEE 802.3af/at standards and supports both Mode A and Mode B operation.

The device detects the presence of a powered device (PD) by monitoring the voltage and current on the Ethernet cable. It then classifies the PD based on its power requirements. The LTC4290BIUJ#TRPBF also provides power management features such as programmable current limit and inrush current control.

In case of faults or abnormal conditions, the controller triggers fault outputs and shuts down the power supply to protect the system. It includes overcurrent and overtemperature protection mechanisms to ensure safe operation.

Detailed Application Field Plans

The LTC4290BIUJ#TRPBF is suitable for various Power over Ethernet (PoE) applications, including but not limited to:

  1. IP Cameras: Provides power and data connectivity to IP cameras, eliminating the need for separate power cables.
  2. Wireless Access Points: Enables power delivery to wireless access points, simplifying installation and reducing cable clutter.
  3. VoIP Phones: Supports PoE-enabled Voice over IP (VoIP) phones, allowing for easy deployment and flexibility in office environments.
  4. Network Switches: Integrates with network switches to provide power to connected devices, such as IP phones and wireless access points.

Detailed and Complete Alternative Models

  1. LTC4267-2: PoE interface controller with integrated switching regulator.
  2. TPS23861: IEEE 802.3bt compliant

10個與LTC4290BIUJ#TRPBF在技術方案中應用相關的常見問題與解答

Sure! Here are 10 common questions and answers related to the application of LTC4290BIUJ#TRPBF:

  1. Q: What is LTC4290BIUJ#TRPBF? A: LTC4290BIUJ#TRPBF is a specific model number for a Power over Ethernet (PoE) controller IC manufactured by Linear Technology.

  2. Q: What is the purpose of LTC4290BIUJ#TRPBF? A: The LTC4290BIUJ#TRPBF is designed to provide power management and control functions for PoE applications, allowing devices to receive power and data over a single Ethernet cable.

  3. Q: What are the key features of LTC4290BIUJ#TRPBF? A: Some key features include IEEE 802.3af/at compliant PD interface, integrated switching regulator, programmable current limit, thermal shutdown protection, and fault detection.

  4. Q: How does LTC4290BIUJ#TRPBF work? A: LTC4290BIUJ#TRPBF acts as a bridge between the Ethernet network and the powered device (PD). It negotiates power requirements with the power sourcing equipment (PSE) and regulates the power delivery to the PD.

  5. Q: What are the typical applications of LTC4290BIUJ#TRPBF? A: LTC4290BIUJ#TRPBF is commonly used in various PoE-enabled devices such as IP cameras, wireless access points, VoIP phones, and industrial automation equipment.

  6. Q: Can LTC4290BIUJ#TRPBF support both IEEE 802.3af and IEEE 802.3at standards? A: Yes, LTC4290BIUJ#TRPBF is compliant with both IEEE 802.3af and IEEE 802.3at standards, allowing it to work with a wide range of PoE devices.

  7. Q: What is the maximum power that LTC4290BIUJ#TRPBF can deliver? A: The maximum power delivery capability of LTC4290BIUJ#TRPBF depends on the power sourcing equipment (PSE) it is connected to. It can support up to 25.5W for IEEE 802.3af and up to 30W for IEEE 802.3at.

  8. Q: Does LTC4290BIUJ#TRPBF have built-in protection features? A: Yes, LTC4290BIUJ#TRPBF includes various protection features such as overcurrent protection, thermal shutdown, and fault detection to ensure safe operation.

  9. Q: Can LTC4290BIUJ#TRPBF be used in high-temperature environments? A: Yes, LTC4290BIUJ#TRPBF has a wide operating temperature range and is designed to withstand high-temperature conditions typically found in industrial applications.

  10. Q: Are there any evaluation boards or reference designs available for LTC4290BIUJ#TRPBF? A: Yes, Linear Technology provides evaluation boards and reference designs for LTC4290BIUJ#TRPBF, which can help developers quickly prototype and integrate the IC into their designs.

Please note that the answers provided here are general and may vary depending on specific application requirements.