LTC4269CDKD-2#TRPBF

Product Overview

Category

The LTC4269CDKD-2#TRPBF belongs to the category of integrated circuits (ICs) and specifically falls under the power management ICs.

Use

This product is primarily used for power sourcing equipment (PSE) applications in Power over Ethernet (PoE) systems. It provides a complete solution for implementing IEEE 802.3at Type 2 compliant PSE devices.

Characteristics

• The LTC4269CDKD-2#TRPBF is designed to deliver up to 25.5W of power to powered devices (PDs) over standard Ethernet cables.
• It supports both 10/100Mbps and Gigabit Ethernet data rates.
• This IC incorporates various protection features such as overcurrent, short-circuit, and thermal shutdown protection.
• It offers advanced power management capabilities, including programmable current limit and classification current.

Package

The LTC4269CDKD-2#TRPBF is available in a small form factor 12-lead DFN (Dual Flat No-Lead) package.

Essence

The essence of this product lies in its ability to efficiently provide power to PoE devices while ensuring reliable operation and protection against faults.

Packaging/Quantity

The LTC4269CDKD-2#TRPBF is typically supplied in tape and reel packaging, with 250 units per reel.

Specifications

• Input Voltage Range: 36V to 57V
• Output Voltage Range: 44V to 57V
• Maximum Output Current: 600mA
• Operating Temperature Range: -40°C to 85°C
• Quiescent Current: 1.8mA (typical)

Detailed Pin Configuration

The LTC4269CDKD-2#TRPBF features a 12-lead DFN package with the following pin configuration:

1. VDD
2. VDD
3. VDD
4. GND
5. GND
6. GND
7. NC
8. NC
9. NC
10. NC
11. NC
12. NC

Functional Features

• Integrated detection and classification circuitry for PD identification.
• Programmable current limit and classification current settings.
• Automatic detection and protection against overcurrent and short-circuit conditions.
• Thermal shutdown protection to prevent damage due to excessive temperature.

Advantages and Disadvantages

Advantages

• Compliance with IEEE 802.3at Type 2 PoE standard.
• Efficient power delivery with programmable current limit.
• Comprehensive protection features ensure safe operation.
• Small form factor package allows for space-saving designs.

Disadvantages

• Limited output current capability compared to higher-power PoE solutions.
• Restricted pin configuration may limit flexibility in certain applications.

Working Principles

The LTC4269CDKD-2#TRPBF operates by detecting and classifying connected PDs using integrated circuitry. It then provides the appropriate power level based on the PD's requirements. The IC continuously monitors the power delivery process, ensuring protection against faults such as overcurrent and short-circuits. It also incorporates thermal shutdown protection to prevent overheating.

Detailed Application Field Plans

The LTC4269CDKD-2#TRPBF finds application in various Power over Ethernet systems, including: - IP cameras - Wireless access points - VoIP phones - Network switches - Industrial automation equipment

Its ability to deliver power efficiently and provide comprehensive protection makes it suitable for a wide range of PSE devices.

Detailed and Complete Alternative Models

• LTC4269CDKD-1#TRPBF: Similar to LTC4269CDKD-2#TRPBF, but with a different pin configuration.
• LTC4269CDKD-3#TRPBF: Higher-power version of the LTC4269CDKD series, capable of delivering up to 30W of power.

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

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