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LTC4278CDKD

LTC4278CDKD

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Power over Ethernet (PoE) Controller
  • Characteristics: High efficiency, advanced power management features
  • Package: 16-Lead DFN (Dual Flat No-Lead)
  • Essence: Provides power and data transmission capabilities over Ethernet cables
  • Packaging/Quantity: Available in reels of 2500 units

Specifications

  • Input Voltage Range: 36V to 57V
  • Output Voltage Range: 3.3V to 14V
  • Maximum Output Current: 400mA
  • Operating Temperature Range: -40°C to 85°C
  • Power Dissipation: 1.5W
  • Compliance: IEEE 802.3af/at Standards

Detailed Pin Configuration

The LTC4278CDKD has a 16-pin configuration as follows:

  1. VOUT: Output voltage pin
  2. GND: Ground pin
  3. NC: No connection
  4. NC: No connection
  5. NC: No connection
  6. NC: No connection
  7. NC: No connection
  8. NC: No connection
  9. NC: No connection
  10. NC: No connection
  11. NC: No connection
  12. NC: No connection
  13. NC: No connection
  14. NC: No connection
  15. VIN: Input voltage pin
  16. NC: No connection

Functional Features

  • Advanced Power Management: Efficiently manages power delivery and consumption
  • Integrated PD Detection: Automatically detects Powered Devices (PDs) connected to the system
  • Programmable Current Limit: Allows customization of the maximum current delivered to PDs
  • Thermal Shutdown Protection: Safeguards against overheating
  • Fault Detection and Reporting: Monitors and reports any faults in the system

Advantages and Disadvantages

Advantages: - High efficiency power delivery - Advanced power management features - Integrated PD detection simplifies system design - Programmable current limit for customization - Thermal shutdown protection ensures safety

Disadvantages: - Limited output current capacity (400mA) - Restricted input voltage range (36V to 57V)

Working Principles

The LTC4278CDKD is a Power over Ethernet (PoE) controller that enables the transmission of both power and data over Ethernet cables. It operates based on the IEEE 802.3af/at standards, allowing it to deliver power to compatible devices.

The controller detects Powered Devices (PDs) connected to the system and manages the power delivery efficiently. It provides advanced power management features, including programmable current limit and thermal shutdown protection, ensuring safe and reliable operation.

Detailed Application Field Plans

The LTC4278CDKD is commonly used in various applications, including:

  1. IP Cameras: Enables power and data transmission to IP cameras, eliminating the need for separate power cables.
  2. Wireless Access Points: Provides power to wireless access points, simplifying installation and reducing clutter.
  3. VoIP Phones: Powers VoIP phones through Ethernet cables, enabling seamless communication.
  4. Network Switches: Facilitates power delivery to network switches, enhancing flexibility in network setup.
  5. Industrial Automation: Supports power transmission to various industrial automation devices, improving efficiency.

Detailed and Complete Alternative Models

  1. LTC4267CDKD: Similar PoE controller with extended input voltage range (36V to 72V).
  2. LTC4279CDKD: PoE controller with higher output current capacity (up to 800mA).
  3. LTC4280CDKD: Integrated PoE controller with additional power management features.

These alternative models offer different specifications and capabilities, providing options for specific application requirements.

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قم بإدراج 10 أسئلة وإجابات شائعة تتعلق بتطبيق LTC4278CDKD في الحلول التقنية

Sure! Here are 10 common questions and answers related to the application of LTC4278CDKD in technical solutions:

  1. Q: What is LTC4278CDKD? A: LTC4278CDKD is a Power over Ethernet (PoE) controller designed for use in various technical solutions.

  2. Q: What is the purpose of LTC4278CDKD? A: LTC4278CDKD provides power and data connectivity to devices over Ethernet cables, eliminating the need for separate power cables.

  3. Q: Can LTC4278CDKD be used in industrial applications? A: Yes, LTC4278CDKD is suitable for industrial applications as it can handle extended temperature ranges and has robust protection features.

  4. Q: How many PoE ports does LTC4278CDKD support? A: LTC4278CDKD supports up to eight PoE ports, making it ideal for applications requiring multiple powered devices.

  5. Q: What is the maximum power that LTC4278CDKD can deliver per port? A: LTC4278CDKD can deliver up to 25.5W of power per port, complying with the IEEE 802.3af/at standards.

  6. Q: Does LTC4278CDKD support power management features? A: Yes, LTC4278CDKD offers advanced power management features such as prioritization, scheduling, and fault detection.

  7. Q: Can LTC4278CDKD operate in a standalone mode? A: Yes, LTC4278CDKD can operate in standalone mode without the need for an external microcontroller, simplifying system design.

  8. Q: Is LTC4278CDKD compatible with different Ethernet speeds? A: Yes, LTC4278CDKD is compatible with both 10/100Mbps and 1Gbps Ethernet speeds, providing flexibility in system integration.

  9. Q: Does LTC4278CDKD support power classification of connected devices? A: Yes, LTC4278CDKD supports power classification based on the IEEE 802.3af/at standards, allowing efficient power allocation.

  10. Q: What are the key protection features of LTC4278CDKD? A: LTC4278CDKD offers various protection features like overcurrent, overvoltage, and thermal shutdown to safeguard the system and connected devices.

Please note that these questions and answers are general and may vary depending on specific application requirements.