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MAX5955AUEE+T
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MAX5955AUEE+T

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Power Management
  • Characteristics: High-efficiency, Programmable Current Limit, Thermal Shutdown
  • Package: 16-TSSOP
  • Essence: Power over Ethernet (PoE) Controller
  • Packaging/Quantity: Tape & Reel, 2500 units per reel

Specifications

  • Input Voltage Range: 36V to 57V
  • Output Voltage Range: 3.15V to 5.5V
  • Maximum Output Current: 600mA
  • Operating Temperature Range: -40°C to +85°C
  • Efficiency: Up to 92%
  • Current Limit Accuracy: ±5%
  • Quiescent Current: 1.2mA (typical)

Detailed Pin Configuration

The MAX5955AUEE+T has a total of 16 pins. The pin configuration is as follows:

  1. VDD: Power Supply Input
  2. GND: Ground
  3. INT: Interrupt Output
  4. SDA: I²C Serial Data Input/Output
  5. SCL: I²C Serial Clock Input
  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. NC: No Connection
  16. NC: No Connection

Functional Features

  • Integrated IEEE 802.3af/at Compliant PD Interface
  • Programmable Current Limit
  • Thermal Shutdown Protection
  • Automatic Detection and Classification of Powered Devices
  • Supports Power Sourcing Equipment (PSE) Detection
  • I²C Interface for Configuration and Control

Advantages and Disadvantages

Advantages: - High efficiency, reducing power dissipation - Programmable current limit for flexible power management - Thermal shutdown protection prevents overheating - Automatic detection and classification of powered devices simplifies system integration - I²C interface allows easy configuration and control

Disadvantages: - Limited output current (maximum 600mA) - Requires external components for complete PoE implementation

Working Principles

The MAX5955AUEE+T is a Power over Ethernet (PoE) controller IC. It integrates an IEEE 802.3af/at compliant PD interface, allowing it to receive power and data over a single Ethernet cable. The device supports automatic detection and classification of powered devices, enabling seamless integration into PoE systems.

The programmable current limit feature allows the user to set the maximum current that can be drawn from the PoE source, providing flexibility in power management. The thermal shutdown protection ensures safe operation by preventing excessive heat buildup.

The MAX5955AUEE+T communicates with the host system through an I²C interface, which enables configuration and control of various parameters.

Detailed Application Field Plans

The MAX5955AUEE+T is widely used in applications requiring Power over Ethernet functionality. Some common application fields include:

  1. IP Phones: Enables power and data transmission to IP phones, eliminating the need for separate power adapters.
  2. Wireless Access Points: Provides power to wireless access points, simplifying installation and reducing cable clutter.
  3. Network Cameras: Allows network cameras to be powered and controlled over a single Ethernet cable.
  4. Industrial Automation: Supports PoE-enabled devices in industrial automation systems, enhancing flexibility and ease of installation.
  5. IoT Devices: Powers and connects various IoT devices, enabling seamless integration into network infrastructure.

Detailed and Complete Alternative Models

  1. MAX5969BETG+: Similar PoE controller IC with higher output current capability (up to 750mA).
  2. LTC4267CGN#PBF: PoE controller IC with advanced features such as inrush current limiting and power-good monitoring.
  3. TPS23754PWPR: Integrated PoE PD controller with built-in DC-DC converter for simplified power management.

These alternative models offer similar functionality and can be considered based on specific application requirements.

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Lista 10 Vanliga frågor och svar relaterade till tillämpningen av MAX5955AUEE+T i tekniska lösningar

Sure! Here are 10 common questions and answers related to the application of MAX5955AUEE+T in technical solutions:

  1. Q: What is the MAX5955AUEE+T? A: The MAX5955AUEE+T is a power-over-Ethernet (PoE) controller designed for use in network devices that require power and data over a single Ethernet cable.

  2. Q: What is the maximum power output of the MAX5955AUEE+T? A: The MAX5955AUEE+T can deliver up to 13W of power to the connected device.

  3. Q: Can the MAX5955AUEE+T support IEEE 802.3af/at standards? A: Yes, the MAX5955AUEE+T is compliant with both IEEE 802.3af and IEEE 802.3at standards.

  4. Q: How many Ethernet ports can the MAX5955AUEE+T support? A: The MAX5955AUEE+T can support up to four Ethernet ports.

  5. Q: Does the MAX5955AUEE+T require an external power supply? A: Yes, the MAX5955AUEE+T requires an external power supply to provide power to the connected devices.

  6. Q: Can the MAX5955AUEE+T be used in both indoor and outdoor applications? A: Yes, the MAX5955AUEE+T can be used in both indoor and outdoor applications as long as it is properly protected from environmental conditions.

  7. Q: What is the input voltage range supported by the MAX5955AUEE+T? A: The MAX5955AUEE+T supports an input voltage range of 36V to 57V.

  8. Q: Does the MAX5955AUEE+T provide any protection features for connected devices? A: Yes, the MAX5955AUEE+T provides various protection features such as overcurrent protection, overvoltage protection, and thermal shutdown.

  9. Q: Can the MAX5955AUEE+T be used with non-PoE devices? A: Yes, the MAX5955AUEE+T can be used with non-PoE devices by using a PoE splitter or injector.

  10. Q: Are there any evaluation boards or reference designs available for the MAX5955AUEE+T? A: Yes, Maxim Integrated provides evaluation boards and reference designs for the MAX5955AUEE+T to help with the development and testing process.