LTC4291IUF-1#TRPBF

Product Overview

Category

The LTC4291IUF-1#TRPBF belongs to the category of integrated circuits (ICs) and specifically falls under the Power over Ethernet (PoE) controllers.

Use

This product is primarily used in PoE applications, where it enables the delivery of power and data over a single Ethernet cable. It provides a convenient solution for powering various devices such as IP cameras, wireless access points, and VoIP phones.

Characteristics

• Power over Ethernet (PoE) controller
• Supports IEEE 802.3af/at standards
• Integrated detection and classification functions
• Efficient power management features
• Compact and versatile design

Package

The LTC4291IUF-1#TRPBF comes in a small form factor QFN (Quad Flat No-Lead) package, which allows for easy integration onto circuit boards. The package dimensions are typically 4mm x 4mm.

Essence

The essence of LTC4291IUF-1#TRPBF lies in its ability to simplify the implementation of Power over Ethernet technology by providing comprehensive control and management features in a compact package.

Packaging/Quantity

This product is typically packaged in reels or tubes, with each reel or tube containing a specific quantity of LTC4291IUF-1#TRPBF ICs. The exact quantity may vary depending on the supplier or manufacturer.

Specifications

• Input Voltage Range: 36V to 57V
• Output Voltage Range: 0V to 57V
• Maximum Output Current: 600mA
• Operating Temperature Range: -40°C to 85°C
• Package Type: QFN-32

Detailed Pin Configuration

The LTC4291IUF-1#TRPBF has a total of 32 pins. Here is a detailed pin configuration:

1. VDD - Power supply input
2. VDDSENSE - Power supply sense input
3. VDDSENSE - Power supply sense input
4. VDDSENSE - Power supply sense input
5. VDDSENSE - Power supply sense input
6. VDDSENSE - Power supply sense input
7. VDDSENSE - Power supply sense input
8. VDDSENSE - Power supply sense input
9. VDDSENSE - Power supply sense input
10. VDDSENSE - Power supply sense input
11. VDDSENSE - Power supply sense input
12. VDDSENSE - Power supply sense input
13. VDDSENSE - Power supply sense input
14. VDDSENSE - Power supply sense input
15. VDDSENSE - Power supply sense input
16. VDDSENSE - Power supply sense input
17. VDDSENSE - Power supply sense input
18. VDDSENSE - Power supply sense input
19. VDDSENSE - Power supply sense input
20. VDDSENSE - Power supply sense input
21. VDDSENSE - Power supply sense input
22. VDDSENSE - Power supply sense input
23. VDDSENSE - Power supply sense input
24. VDDSENSE - Power supply sense input
25. VDDSENSE - Power supply sense input
26. VDDSENSE - Power supply sense input
27. VDDSENSE - Power supply sense input
28. VDDSENSE - Power supply sense input
29. VDDSENSE - Power supply sense input
30. VDDSENSE - Power supply sense input
31. VDDSENSE - Power supply sense input
32. GND - Ground

Functional Features

• Integrated detection and classification functions for PoE devices
• Comprehensive power management features, including current limiting and thermal shutdown
• Supports both IEEE 802.3af and IEEE 802.3at standards
• Flexible control options through I2C interface
• Efficient power conversion and delivery capabilities

Advantages and Disadvantages

Advantages

• Simplifies implementation of Power over Ethernet technology
• Compact form factor allows for easy integration into various applications
• Comprehensive power management features ensure safe and efficient operation
• Supports both IEEE 802.3af and IEEE 802.3at standards, providing compatibility with a wide range of PoE devices

Disadvantages

• Limited maximum output current (600mA), which may not be sufficient for high-power devices
• Requires additional external components for complete PoE system implementation

Working Principles

The LTC4291IUF-1#TRPBF operates by receiving power and data from an Ethernet cable connected to a PoE switch or injector. It incorporates detection and classification functions to identify the connected PoE device and determine its power requirements. The IC then manages the power