MAX5991AETP+T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Power over Ethernet (PoE) Controller
• Characteristics: High efficiency, compact size, advanced features
• Package: 20-TQFN-EP (4x4)
• Essence: The MAX5991AETP+T is a PoE controller designed to provide power and data transmission over Ethernet cables.
• Packaging/Quantity: Tape & Reel, 2500 units per reel

Specifications

• Input Voltage Range: 36V to 57V
• Output Voltage Range: 3.3V to 12V
• Maximum Output Current: 600mA
• Operating Temperature Range: -40°C to +85°C
• Power Dissipation: 2.5W
• Efficiency: Up to 92%
• Protection Features: Overcurrent, Overvoltage, Overtemperature

Detailed Pin Configuration

The MAX5991AETP+T has a 20-pin TQFN package with the following pin configuration:

1. VDD
2. GND
3. VDDSENSE
4. VDDOUT
5. VDDOUT
6. VDDOUT
7. VDDOUT
8. VDDOUT
9. VDDOUT
10. VDDOUT
11. VDDOUT
12. VDDOUT
13. VDDOUT
14. VDDOUT
15. VDDOUT
16. VDDOUT
17. VDDOUT
18. VDDOUT
19. VDDOUT
20. VDDOUT

Functional Features

• Supports IEEE 802.3af/at compliant PoE applications
• Integrated high-efficiency DC-DC converter
• Programmable output voltage and current limit
• Advanced protection features for safe operation
• Low power consumption in standby mode

Advantages and Disadvantages

Advantages: - High efficiency results in reduced power dissipation - Compact size allows for space-saving designs - Advanced features provide flexibility in power delivery - Comprehensive protection features ensure system reliability

Disadvantages: - Limited maximum output current may not be suitable for high-power applications - Higher cost compared to non-PoE solutions

Working Principles

The MAX5991AETP+T operates by receiving power from an Ethernet cable and converting it into a regulated DC voltage. It utilizes advanced control algorithms to efficiently deliver power to the connected device while ensuring compliance with PoE standards. The integrated protection features safeguard against overcurrent, overvoltage, and overtemperature conditions, enhancing system reliability.

Detailed Application Field Plans

The MAX5991AETP+T is widely used in various applications that require Power over Ethernet functionality. Some of the common application fields include:

1. IP Cameras: Enables power and data transmission for surveillance cameras over a single Ethernet cable.
2. Wireless Access Points: Provides power to wireless networking devices, eliminating the need for separate power cables.
3. VoIP Phones: Enables power delivery to Voice over IP phones, simplifying installation and reducing clutter.
4. Industrial Automation: Powers Ethernet-enabled industrial devices such as sensors, actuators, and controllers.
5. Building Management Systems: Facilitates power and data transmission for devices used in building automation systems.

Detailed and Complete Alternative Models

• MAX5969BETI+: PoE controller with higher maximum output current (800mA) and additional protection features.
• LT4276AIUHF#PBF: PoE controller with extended temperature range (-40°C to +125°C) and enhanced EMI performance.
• TPS23861PWR: PoE controller with integrated power management features and support for multiple PD classes.

(Note: The above alternative models are provided for reference and may have different specifications and features. It is recommended to refer to the respective datasheets for detailed information.)

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