MAX5954LETX+T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Power Management
• Characteristics: High-efficiency, Low-power, Programmable
• Package: 40-pin TQFN (Thin Quad Flat No-Lead)
• Essence: Power-over-Ethernet (PoE) Controller
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Input Voltage Range: 36V to 57V
• Output Voltage Range: 3.3V to 5.5V
• Maximum Output Current: 600mA
• Operating Temperature Range: -40°C to +85°C
• Power Dissipation: 1.2W (typical)

Pin Configuration

The MAX5954LETX+T has a total of 40 pins. The pin configuration is as follows:

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

Functional Features

• Integrated PoE controller with advanced power management capabilities
• Supports IEEE 802.3af/at standards for Power-over-Ethernet applications
• Programmable output voltage and current limits
• Overcurrent and overtemperature protection
• Integrated thermal shutdown feature
• Low-power sleep mode for energy efficiency

Advantages and Disadvantages

Advantages: - High-efficiency power management - Programmable output settings for flexibility - Comprehensive protection features - Compact package size for space-constrained designs

Disadvantages: - Limited maximum output current (600mA) - Restricted input voltage range (36V to 57V)

Working Principles

The MAX5954LETX+T is a Power-over-Ethernet (PoE) controller that enables the transmission of both power and data over Ethernet cables. It integrates various power management functions, allowing efficient delivery of power to connected devices.

The device complies with the IEEE 802.3af/at standards, ensuring compatibility with PoE-enabled devices. It regulates the input voltage from the Ethernet cable and provides a programmable output voltage and current to power the connected device.

The MAX5954LETX+T incorporates advanced protection features such as overcurrent and overtemperature protection, safeguarding the device and the connected equipment from potential damage. It also includes a thermal shutdown feature to prevent overheating.

Detailed Application Field Plans

The MAX5954LETX+T is widely used in various applications requiring Power-over-Ethernet functionality. Some of the common application fields include:

1. IP Cameras: The device can power and control IP cameras over Ethernet, eliminating the need for separate power cables.
2. Wireless Access Points: It can provide power to wireless access points, simplifying installation and reducing clutter.
3. VoIP Phones: The MAX5954LETX+T enables PoE for VoIP phones, enabling seamless communication without the need for additional power adapters.
4. Network Switches: It can be used in network switches to provide PoE capabilities to connected devices.

Detailed and Complete Alternative Models

1. MAX5940BESA+: Similar to MAX5954LETX+T, but with a different pin configuration and package (8-pin SOIC).
2. MAX5969AETG+: Offers higher maximum output current (1.5A) and wider input voltage range (36V to 75V).
3. MAX5970AETI+: Provides dual-channel PoE functionality with independent programmable outputs.

These alternative models offer similar power management capabilities but may have different pin configurations, packages, or additional features based on specific application requirements.

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