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LTC4279IS#PBF
Product Overview
Category
LTC4279IS#PBF belongs to the category of power management integrated circuits (PMICs).
Use
This product is primarily used for power sourcing equipment (PSE) applications in Power over Ethernet (PoE) systems.
Characteristics
- Supports IEEE 802.3at Type 1 and Type 2 compliant devices.
- Provides a complete PoE solution with integrated detection, classification, and current limiting.
- Offers advanced features such as programmable current limit, thermal shutdown, and fault protection.
- Operates over a wide input voltage range, making it suitable for various PSE designs.
Package
LTC4279IS#PBF is available in a small outline integrated circuit (SOIC) package.
Essence
The essence of LTC4279IS#PBF lies in its ability to efficiently deliver power to PoE devices while ensuring compliance with industry standards.
Packaging/Quantity
This product is typically packaged in reels or tubes, with a quantity of 250 units per reel/tube.
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
- Package Type: SOIC-16
Detailed Pin Configuration
- VDD: Power supply input
- GND: Ground reference
- NC: No connection
- NC: No connection
- NC: No connection
- NC: No connection
- NC: No connection
- NC: No connection
- NC: No connection
- NC: No connection
- NC: No connection
- NC: No connection
- NC: No connection
- NC: No connection
- NC: No connection
- NC: No connection
Functional Features
- Integrated detection and classification of powered devices.
- Programmable current limit for flexible power delivery.
- Thermal shutdown protection to prevent overheating.
- Fault protection mechanisms to ensure safe operation.
Advantages and Disadvantages
Advantages
- Supports both Type 1 and Type 2 PoE devices.
- Wide input voltage range allows for versatile PSE designs.
- Advanced features enhance system reliability and safety.
Disadvantages
- Limited maximum output current may not be suitable for high-power applications.
- Lack of detailed pin configuration limits customization options.
Working Principles
LTC4279IS#PBF operates by detecting and classifying connected PoE devices, determining their power requirements, and delivering the appropriate amount of power. It incorporates various protection mechanisms to ensure safe and reliable operation.
Detailed Application Field Plans
LTC4279IS#PBF finds application in a wide range of PoE systems, including: - IP cameras - Wireless access points - VoIP phones - Network switches - Industrial automation equipment
Detailed and Complete Alternative Models
- LTC4278IS#PBF: Similar to LTC4279IS#PBF but with a higher maximum output current of 800mA.
- LTC4277IS#PBF: Offers similar functionality but supports only Type 1 PoE devices.
- LTC4276IS#PBF: Provides a lower-cost alternative with reduced features and capabilities.
In conclusion, LTC4279IS#PBF is a power management integrated circuit designed for Power over Ethernet applications. With its advanced features, wide input voltage range, and compliance with industry standards, it offers an efficient and reliable solution for delivering power to PoE devices.
Noem 10 veelgestelde vragen en antwoorden met betrekking tot de toepassing van LTC4279IS#PBF in technische oplossingen
Sure! Here are 10 common questions and answers related to the application of LTC4279IS#PBF in technical solutions:
Q: What is LTC4279IS#PBF? A: LTC4279IS#PBF is a Power over Ethernet (PoE) controller designed for use in various technical solutions.
Q: What is the purpose of LTC4279IS#PBF? A: The purpose of LTC4279IS#PBF is to provide power and data connectivity to PoE-enabled devices over Ethernet cables.
Q: What are the key features of LTC4279IS#PBF? A: Some key features include IEEE 802.3af/at compliant PoE, integrated DC/DC converter, advanced power management, and fault protection.
Q: How does LTC4279IS#PBF enable PoE functionality? A: LTC4279IS#PBF integrates the necessary circuitry to extract power from an Ethernet cable and convert it into usable voltage levels for connected devices.
Q: Can LTC4279IS#PBF support both 10/100Mbps and Gigabit Ethernet? A: Yes, LTC4279IS#PBF supports both 10/100Mbps and Gigabit Ethernet connections.
Q: What is the maximum power that LTC4279IS#PBF can deliver to a PoE device? A: LTC4279IS#PBF can deliver up to 25.5W of power to a PoE device, depending on the power source and device requirements.
Q: Does LTC4279IS#PBF provide any protection mechanisms for connected devices? A: Yes, LTC4279IS#PBF offers various protection mechanisms such as overcurrent protection, short-circuit protection, and thermal shutdown.
Q: Can LTC4279IS#PBF be used in industrial applications? A: Yes, LTC4279IS#PBF is suitable for use in industrial applications due to its wide operating temperature range and robust design.
Q: Are there any evaluation boards or reference designs available for LTC4279IS#PBF? A: Yes, Linear Technology (now part of Analog Devices) provides evaluation boards and reference designs to help users implement LTC4279IS#PBF in their applications.
Q: Where can I find more detailed information about LTC4279IS#PBF? A: You can refer to the datasheet and application notes provided by Analog Devices for comprehensive technical information on LTC4279IS#PBF.