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LT4275AHDD#PBF
Product Overview
Category: Integrated Circuit (IC)
Use: Power over Ethernet (PoE) Controller
Characteristics: - High efficiency - Low power dissipation - Advanced power management features - Robust protection mechanisms
Package: 16-Lead Plastic TSSOP
Essence: The LT4275AHDD#PBF is a PoE controller designed to provide power and data transmission over Ethernet cables.
Packaging/Quantity: The LT4275AHDD#PBF is available in a 16-Lead Plastic TSSOP package. It is typically sold in reels of 2500 units.
Specifications
- Input Voltage Range: 36V to 57V
- Output Voltage Range: 3.3V to 12V
- Maximum Output Current: 600mA
- Operating Temperature Range: -40°C to 85°C
- Power Dissipation: 1.2W (typical)
- Efficiency: Up to 94%
- IEEE 802.3af/at Compliant
Detailed Pin Configuration
The LT4275AHDD#PBF has the following pin configuration:
- VOUT
- GND
- NC
- NC
- NC
- NC
- NC
- NC
- NC
- NC
- NC
- NC
- NC
- NC
- VIN
- NC
Functional Features
- Integrated switching regulator for high efficiency power conversion
- Programmable output voltage and current limit
- Comprehensive protection features including overcurrent, overvoltage, and thermal shutdown
- Automatic detection and classification of powered devices
- Adaptive control for optimal power delivery
Advantages and Disadvantages
Advantages: - High efficiency power conversion - Advanced power management features - Robust protection mechanisms ensure safe operation - Automatic detection and classification of powered devices simplifies system design
Disadvantages: - Limited maximum output current (600mA) - Restricted input voltage range (36V to 57V)
Working Principles
The LT4275AHDD#PBF operates by receiving power from an Ethernet cable and converting it into a regulated output voltage suitable for powering various devices. It incorporates a switching regulator that efficiently converts the input voltage to the desired output voltage. The controller also provides advanced power management features, such as programmable output voltage and current limit, to meet specific application requirements.
The LT4275AHDD#PBF includes comprehensive protection mechanisms to safeguard against overcurrent, overvoltage, and thermal issues. It automatically detects and classifies powered devices, enabling efficient power delivery based on their requirements. This PoE controller ensures reliable and safe operation in Power over Ethernet applications.
Detailed Application Field Plans
The LT4275AHDD#PBF is widely used in various Power over Ethernet applications, including:
- IP Cameras: The controller powers and transmits data to IP cameras over Ethernet cables, eliminating the need for separate power supplies.
- Wireless Access Points: It enables the deployment of wireless access points in locations without easy access to power outlets.
- VoIP Phones: The LT4275AHDD#PBF provides power to VoIP phones, simplifying installation and reducing cable clutter.
- Network Switches: It can be integrated into network switches to provide power to connected devices, reducing overall system complexity.
Detailed and Complete Alternative Models
- LT4276AHDD#PBF: Similar to LT4275AHDD#PBF but with a higher maximum output current of 800mA.
- LT4277AHDD#PBF: Offers additional features such as adjustable undervoltage lockout and programmable input current limit.
- LT4278AHDD#PBF: Provides higher power capability with a maximum output current of 1A.
These alternative models offer varying specifications and features to cater to different application requirements.
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Wymień 10 typowych pytań i odpowiedzi związanych z zastosowaniem LT4275AHDD#PBF w rozwiązaniach technicznych
Sure! Here are 10 common questions and answers related to the application of LT4275AHDD#PBF in technical solutions:
Q: What is LT4275AHDD#PBF? A: LT4275AHDD#PBF is a Power over Ethernet (PoE) controller designed for use in various technical solutions.
Q: What is the maximum power output of LT4275AHDD#PBF? A: LT4275AHDD#PBF can deliver up to 25.5 watts of power to connected devices.
Q: Can LT4275AHDD#PBF be used with both 802.3af and 802.3at PoE standards? A: Yes, LT4275AHDD#PBF is compatible with both 802.3af and 802.3at PoE standards.
Q: What is the input voltage range supported by LT4275AHDD#PBF? A: LT4275AHDD#PBF supports an input voltage range of 36V to 57V.
Q: Is LT4275AHDD#PBF suitable for outdoor applications? A: Yes, LT4275AHDD#PBF is designed to withstand harsh environmental conditions, making it suitable for outdoor applications.
Q: Can LT4275AHDD#PBF provide power to multiple devices simultaneously? A: Yes, LT4275AHDD#PBF supports multiple powered device connections, allowing it to provide power to multiple devices at once.
Q: Does LT4275AHDD#PBF have built-in protection features? A: Yes, LT4275AHDD#PBF incorporates various protection features such as overcurrent, overvoltage, and thermal shutdown protection.
Q: What is the operating temperature range of LT4275AHDD#PBF? A: LT4275AHDD#PBF can operate within a temperature range of -40°C to +85°C.
Q: Can LT4275AHDD#PBF be used in industrial applications? A: Yes, LT4275AHDD#PBF is suitable for use in industrial applications due to its rugged design and wide temperature range.
Q: Are there any evaluation boards or reference designs available for LT4275AHDD#PBF? A: Yes, Linear Technology (now part of Analog Devices) provides evaluation boards and reference designs to help users implement LT4275AHDD#PBF in their technical solutions.
Please note that the answers provided here are general and may vary depending on specific application requirements. It is always recommended to refer to the datasheet and consult with the manufacturer for detailed information.