LTC4261IUFD-2#PBF
Product Overview
Category
The LTC4261IUFD-2#PBF 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 delivery of power and data over a single Ethernet cable, eliminating the need for separate power cables.
Characteristics
- Integrated circuit for PoE applications
- Supports IEEE 802.3af/at standards
- Provides power classification and detection
- Offers advanced power management features
- Enables reliable and safe power delivery
Package
The LTC4261IUFD-2#PBF is available in a small form factor 16-pin QFN package, which ensures ease of integration into various PoE system designs.
Essence
The essence of LTC4261IUFD-2#PBF lies in its ability to efficiently manage power delivery in PoE systems, ensuring reliable operation and optimal performance.
Packaging/Quantity
This product is typically supplied in tape and reel packaging, with a quantity of 250 units per reel.
Specifications
- Input Voltage Range: 36V to 57V
- Output Voltage Range: 0V to 57V
- Maximum Output Current: 400mA
- Operating Temperature Range: -40°C to 85°C
- Power Dissipation: 1.5W
- Compliance: IEEE 802.3af/at
Detailed Pin Configuration
The LTC4261IUFD-2#PBF features the following pin configuration:
- VOUT
- GND
- VDD
- VEE
- PWRGD
- CLASS
- DETECT
- DISCONNECT
- SENSE
- SENSE
- SENSE
- SENSE
- SENSE
- SENSE
- SENSE
- NC
Functional Features
- Power classification and detection: The LTC4261IUFD-2#PBF accurately classifies the powered device (PD) connected to the PoE system, ensuring optimal power delivery.
- Advanced power management: This IC provides various features like current limiting, thermal shutdown, and fault protection, ensuring safe and reliable operation.
- Disconnect detection: It can detect if a PD is disconnected or faulty, allowing for appropriate actions to be taken by the PSE.
Advantages and Disadvantages
Advantages
- Efficient power management in PoE systems
- Compliance with IEEE 802.3af/at standards
- Small form factor package for easy integration
- Advanced power management features for enhanced safety
Disadvantages
- Limited maximum output current of 400mA
- Operating temperature range may not be suitable for extreme environments
Working Principles
The LTC4261IUFD-2#PBF operates based on the IEEE 802.3af/at standards for PoE. It utilizes power classification and detection techniques to identify the power requirements of the connected PD. It then regulates the power delivery accordingly, ensuring efficient and safe operation.
Detailed Application Field Plans
The LTC4261IUFD-2#PBF finds applications in various fields, including: 1. IP cameras and surveillance systems 2. Wireless access points 3. VoIP phones 4. Industrial automation systems 5. Building management systems
In these applications, the LTC4261IUFD-2#PBF enables the seamless integration of power and data transmission over Ethernet cables, simplifying installation and reducing overall system complexity.
Detailed and Complete Alternative Models
- LTC4260IUFD-2#PBF: Similar to LTC4261IUFD-2#PBF, but with a lower maximum output current of 300mA.
- LTC4262IUFD-2#PBF: Offers higher maximum output current of 600mA, suitable for power-hungry PDs.
- LTC4263IUFD-2#PBF: Provides additional features like programmable current limit and adjustable undervoltage lockout.
These alternative models offer flexibility in choosing the right IC based on specific application requirements.
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Lista 10 Vanliga frågor och svar relaterade till tillämpningen av LTC4261IUFD-2#PBF i tekniska lösningar
Sure! Here are 10 common questions and answers related to the application of LTC4261IUFD-2#PBF in technical solutions:
Q1: What is LTC4261IUFD-2#PBF? A1: LTC4261IUFD-2#PBF 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 LTC4261IUFD-2#PBF? A2: The LTC4261IUFD-2#PBF is designed to provide power and data communication to PoE devices, such as IP cameras, wireless access points, and VoIP phones, over standard Ethernet cables.
Q3: What are the key features of LTC4261IUFD-2#PBF? A3: Some key features of LTC4261IUFD-2#PBF include IEEE 802.3af/at compliant PSE controller, integrated detection and classification, programmable current limit, and fault protection.
Q4: How does LTC4261IUFD-2#PBF detect and classify PoE devices? A4: LTC4261IUFD-2#PBF 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 LTC4261IUFD-2#PBF support both IEEE 802.3af and IEEE 802.3at standards? A5: Yes, LTC4261IUFD-2#PBF is compatible with both IEEE 802.3af and IEEE 802.3at standards, allowing it to power devices that comply with either of these standards.
Q6: What is the maximum power that LTC4261IUFD-2#PBF can deliver to a PoE device? A6: The maximum power that LTC4261IUFD-2#PBF can deliver depends on the power supply and the capabilities of the connected PoE device. It supports up to 25.5W for IEEE 802.3at devices.
Q7: Can LTC4261IUFD-2#PBF protect against overcurrent or short-circuit conditions? A7: Yes, LTC4261IUFD-2#PBF has built-in protection features like programmable current limit and fault protection to safeguard against overcurrent or short-circuit conditions.
Q8: Is LTC4261IUFD-2#PBF suitable for outdoor applications? A8: LTC4261IUFD-2#PBF is not specifically designed for outdoor use. However, it can be used in outdoor applications if proper environmental protection measures are taken.
Q9: Does LTC4261IUFD-2#PBF require any external components for operation? A9: Yes, LTC4261IUFD-2#PBF requires external components such as resistors, capacitors, and transformers to function properly in a PoE system.
Q10: Where can I find more information about LTC4261IUFD-2#PBF? A10: You can find detailed information about LTC4261IUFD-2#PBF, including datasheets, application notes, and technical support, on the Analog Devices website or by contacting their customer support team.