LTC4269IDKD-2#TRPBF

Product Overview

Category

The LTC4269IDKD-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 LTC4269IDKD-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 features an integrated detection signature, which allows it to identify and classify PDs according to their power requirements.
• It incorporates various protection features such as overcurrent, short-circuit, and thermal shutdown to ensure safe operation.

Package

The LTC4269IDKD-2#TRPBF comes in a small form factor 12-lead DFN (Dual Flat No-Lead) package, which offers excellent thermal performance and space efficiency.

Essence

The essence of this product lies in its ability to provide efficient and reliable power delivery to PoE devices, enabling the seamless integration of data and power over a single Ethernet cable.

Packaging/Quantity

The LTC4269IDKD-2#TRPBF is typically available in tape and reel packaging, with a quantity of 2500 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: 1.5mA (typical)

Detailed Pin Configuration

The LTC4269IDKD-2#TRPBF features a 12-lead DFN package with the following pin configuration:

1. VDD - Power supply input
2. VDDSENSE - Power supply sense input
3. GND - Ground
4. VEE - Negative power supply input
5. VOUT - Output voltage
6. VOUTSENSE - Output voltage sense
7. CLASS - Classification resistor connection
8. DETECT - Detection signature output
9. DISABLE - Disable control input
10. ILIM - Current limit set input
11. MODE - Mode selection input
12. NC - No connect

Functional Features

• Integrated detection signature for PD classification
• Accurate current limit and fault protection
• Automatic detection of short-circuit faults
• Thermal shutdown protection
• Fast disable feature for rapid fault recovery
• Low quiescent current for energy efficiency

Advantages and Disadvantages

Advantages

• Compliance with IEEE 802.3at Type 2 PoE standard
• Efficient power delivery up to 25.5W
• Comprehensive protection features ensure safe operation
• Small form factor package for space-constrained applications
• Wide operating temperature range for versatile usage

Disadvantages

• Limited maximum output current of 600mA
• Requires external components for complete PSE implementation

Working Principles

The LTC4269IDKD-2#TRPBF operates by detecting and classifying connected PDs based on their power requirements. It then provides the appropriate power level while monitoring for any faults or abnormal conditions. The IC incorporates various protection mechanisms to ensure safe operation, including overcurrent detection, short-circuit detection, and thermal shutdown.

Detailed Application Field Plans

The LTC4269IDKD-2#TRPBF finds applications in various fields, including: - IP cameras and surveillance systems - Wireless access points - VoIP phones - Industrial automation equipment - Building management systems - IoT devices

Detailed and Complete Alternative Models

1. LTC4269IDKD-1#TRPBF: Similar to the LTC4269IDKD-2#TRPBF, but compliant with IEEE 802.3at Type 1 PoE standard.
2. LTC4274A-1#PBF: A higher power variant capable of delivering up to 90W of power to PDs.
3. LTC4275AIUHF-1#PBF: Designed for high-power PoE applications, supporting up to 120W of power delivery.

These alternative models offer different power levels and features to cater to specific application requirements.

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