LTC4268CDKD-1#TRPBF
Product Overview
Category
The LTC4268CDKD-1#TRPBF belongs to the category of integrated circuits (ICs) specifically designed for power management applications.
Use
This product is primarily used for power sourcing equipment (PSE) in Power over Ethernet (PoE) systems. It enables the efficient and reliable delivery of power over Ethernet cables to various devices, such as IP cameras, wireless access points, and VoIP phones.
Characteristics
- Integrated circuit designed for PoE applications
- Supports IEEE 802.3af/at standards
- Provides power management and control functions
- Enables power delivery up to 25.5W per port
- Offers advanced fault protection features
- Operates with high efficiency and low power dissipation
Package
The LTC4268CDKD-1#TRPBF is available in a small form factor package known as DFN (Dual Flat No-Lead). This package ensures easy integration onto printed circuit boards (PCBs) and enhances thermal performance.
Essence
The essence of this product lies in its ability to efficiently manage and control power delivery in PoE systems, ensuring safe and reliable operation of connected devices.
Packaging/Quantity
The LTC4268CDKD-1#TRPBF is typically supplied in tape and reel packaging, which facilitates automated assembly processes. The quantity per reel may vary depending on the manufacturer's specifications.
Specifications
- Input Voltage Range: 36V to 57V
- Output Voltage Range: 2.7V to 14V
- Maximum Output Current: 400mA
- Operating Temperature Range: -40°C to 85°C
- Package Type: DFN-10
Detailed Pin Configuration
The LTC4268CDKD-1#TRPBF features the following pin configuration:
- VPORT: Power input for the PSE port
- VDD: Power supply input for the IC
- GND: Ground reference
- MDI: Ethernet interface input
- MDO: Ethernet interface output
- CLASS: Classification resistor connection
- DETECT: Detection resistor connection
- DISABLE: Disable control pin
- FLT: Fault indication output
- NC: No connection
Functional Features
- Integrated detection and classification functions for PoE devices
- Accurate current limit and fault protection mechanisms
- Programmable inrush current limiting
- Automatic thermal shutdown and recovery
- Supports both 10/100Mbps and 1Gbps Ethernet speeds
- Provides comprehensive fault reporting through the FLT pin
Advantages and Disadvantages
Advantages
- High efficiency power delivery
- Robust fault protection features
- Compact package for space-constrained applications
- Wide operating temperature range
- Compliance with industry standards
Disadvantages
- Limited maximum output current (400mA)
- Requires external components for complete PoE implementation
- Relatively higher cost compared to non-PoE power management ICs
Working Principles
The LTC4268CDKD-1#TRPBF operates based on the IEEE 802.3af/at standards for PoE. It integrates detection, classification, and power management functions into a single IC. The device detects the presence of a powered device (PD) connected to the Ethernet cable and classifies it based on its power requirements. It then regulates the power delivery to the PD while monitoring for faults and protecting against overcurrent and overtemperature conditions.
Detailed Application Field Plans
The LTC4268CDKD-1#TRPBF finds extensive application in various PoE systems, including but not limited to: - IP cameras and surveillance systems - Wireless access points and routers - Voice over IP (VoIP) phones - Network switches and hubs - Industrial automation and control systems
Detailed and Complete Alternative Models
- LTC4267CDKD-1#TRPBF: Similar to LTC4268CDKD-1#TRPBF, but with a different pin configuration.
- LT4275AIDD#PBF: PoE power management IC with higher maximum output current (up to 800mA).
- TPS23754PWPR: Alternative PoE power sourcing equipment controller from Texas Instruments.
These alternative models offer similar functionality and can be considered as substitutes depending on specific application requirements.
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Lista 10 Vanliga frågor och svar relaterade till tillämpningen av LTC4268CDKD-1#TRPBF i tekniska lösningar
Sure! Here are 10 common questions and answers related to the application of LTC4268CDKD-1#TRPBF in technical solutions:
Q1: What is LTC4268CDKD-1#TRPBF? A1: LTC4268CDKD-1#TRPBF is a specific model number for a power sourcing equipment (PSE) controller IC manufactured by Linear Technology (now part of Analog Devices). It is used in Power over Ethernet (PoE) applications.
Q2: What is the purpose of LTC4268CDKD-1#TRPBF? A2: The purpose of LTC4268CDKD-1#TRPBF is to provide power and data connectivity to PoE devices, such as IP cameras, wireless access points, and VoIP phones, through an Ethernet cable.
Q3: What are the key features of LTC4268CDKD-1#TRPBF? A3: Some key features of LTC4268CDKD-1#TRPBF include IEEE 802.3af/at compliant PSE controller, integrated detection and classification, programmable current limit, and fault protection.
Q4: How does LTC4268CDKD-1#TRPBF detect and classify PoE devices? A4: LTC4268CDKD-1#TRPBF uses a proprietary detection algorithm to identify if a connected device is a valid PoE device. It also classifies the device based on its power requirements.
Q5: Can LTC4268CDKD-1#TRPBF support both IEEE 802.3af and IEEE 802.3at standards? A5: Yes, LTC4268CDKD-1#TRPBF is compatible with both IEEE 802.3af and IEEE 802.3at standards, allowing it to power devices with different power requirements.
Q6: What is the maximum current limit that LTC4268CDKD-1#TRPBF can provide? A6: The maximum current limit of LTC4268CDKD-1#TRPBF is programmable and can be set up to 350mA, depending on the specific application requirements.
Q7: How does LTC4268CDKD-1#TRPBF protect against faults? A7: LTC4268CDKD-1#TRPBF provides various fault protection mechanisms, including overcurrent protection, short-circuit protection, and thermal shutdown, to ensure safe operation and prevent damage to the PSE and connected devices.
Q8: Can LTC4268CDKD-1#TRPBF be used in both indoor and outdoor applications? A8: Yes, LTC4268CDKD-1#TRPBF can be used in both indoor and outdoor applications as long as proper environmental conditions are maintained within its specified operating range.
Q9: Does LTC4268CDKD-1#TRPBF require any external components for operation? A9: Yes, LTC4268CDKD-1#TRPBF requires some external components, such as resistors, capacitors, and transformers, to complete the PoE circuitry and provide the necessary functionality.
Q10: Is LTC4268CDKD-1#TRPBF available in other package options? A10: Yes, LTC4268CDKD-1#TRPBF is available in different package options, such as DFN and MSOP, to accommodate various PCB layout and space constraints.
Please note that the answers provided here are general and may vary based on the specific application and implementation requirements. It is always recommended to refer to the datasheet and consult with the manufacturer or technical support for accurate and detailed information.