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LTC4253IGN#TRPBF
Product Overview
Category: Integrated Circuit (IC)
Use: Power over Ethernet (PoE) Controller
Characteristics: - Provides power and data to PoE-enabled devices - Supports IEEE 802.3af/at standards for PoE - Enables power management and control in PoE systems
Package: 16-Lead SSOP (Shrink Small Outline Package)
Essence: LTC4253IGN#TRPBF is a highly integrated PoE controller designed to simplify the implementation of PoE in various applications.
Packaging/Quantity: Available in tape and reel packaging, with a quantity of 2500 units per reel.
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
- Power Dissipation: 1.5W
Detailed Pin Configuration
The LTC4253IGN#TRPBF has the following pin configuration:
- VDD - Power supply input
- GND - Ground
- INTVCC - Internal voltage reference output
- VOUT - Output voltage
- VEE - Negative supply voltage
- VREF - Reference voltage input
- PGOOD - Power good indicator output
- 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
- Detection and classification of powered devices
- Automatic detection of short-circuits and overloads
- Programmable current limit and undervoltage lockout
- Integrated thermal shutdown protection
- Power good indicator for system monitoring
Advantages and Disadvantages
Advantages: - Simplifies implementation of PoE in various applications - Supports industry-standard PoE protocols - Provides power management and control features - Integrated protection mechanisms enhance system reliability
Disadvantages: - Limited maximum output current (400mA) - Restricted operating temperature range (-40°C to 85°C)
Working Principles
The LTC4253IGN#TRPBF operates by detecting and classifying powered devices connected to the PoE system. It provides power to these devices while ensuring proper power management and control. The controller incorporates various protection mechanisms, such as short-circuit detection, overload detection, and thermal shutdown, to enhance system reliability.
Detailed Application Field Plans
The LTC4253IGN#TRPBF is widely used in applications that require Power over Ethernet functionality. Some common application fields include:
- IP Cameras: Enables power and data transmission to IP cameras, eliminating the need for separate power cables.
- Wireless Access Points: Provides power to wireless access points, simplifying installation and reducing cable clutter.
- VoIP Phones: Powers VoIP phones through the Ethernet connection, enabling easy deployment and flexibility.
- Network Switches: Facilitates power delivery to network switches, enhancing network infrastructure efficiency.
Detailed and Complete Alternative Models
- LTC4267IGN#TRPBF: Similar PoE controller with higher maximum output current (600mA).
- LTC4259CGW#TRPBF: PoE controller with extended operating temperature range (-40°C to 125°C).
- LTC4275AIG#TRPBF: Advanced PoE controller with integrated power management features and higher output voltage range.
(Note: These alternative models are provided for reference and may have different specifications and features. Please refer to the respective datasheets for detailed information.)
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Liste 10 perguntas e respostas comuns relacionadas à aplicação de LTC4253IGN#TRPBF em soluções técnicas
Sure! Here are 10 common questions and answers related to the application of LTC4253IGN#TRPBF:
Q: What is LTC4253IGN#TRPBF? A: LTC4253IGN#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.
Q: What is the purpose of LTC4253IGN#TRPBF? A: The LTC4253IGN#TRPBF is designed to provide power and control functions for PoE systems. It enables the PSE to detect, classify, and provide power to connected powered devices (PDs).
Q: What are the key features of LTC4253IGN#TRPBF? A: Some key features of LTC4253IGN#TRPBF include IEEE 802.3af/at compliant PD detection and classification, programmable current limit, thermal shutdown protection, and support for various power management functions.
Q: How does LTC4253IGN#TRPBF detect and classify PDs? A: LTC4253IGN#TRPBF uses a combination of signature detection and classification algorithms to identify and categorize connected PDs based on their power requirements.
Q: Can LTC4253IGN#TRPBF be used in both 802.3af and 802.3at PoE systems? A: Yes, LTC4253IGN#TRPBF is compatible with both IEEE 802.3af and 802.3at standards, making it suitable for use in a wide range of PoE applications.
Q: What is the maximum power that LTC4253IGN#TRPBF can deliver to a PD? A: The maximum power that LTC4253IGN#TRPBF can deliver depends on the capabilities of the PSE system it is integrated with. It supports up to 25.5W for 802.3at compliant PDs.
Q: Can LTC4253IGN#TRPBF be used in non-PoE applications? A: While LTC4253IGN#TRPBF is primarily designed for PoE applications, it may also find use in other power management or control systems where similar functionality is required.
Q: What are the typical input and output voltage ranges supported by LTC4253IGN#TRPBF? A: LTC4253IGN#TRPBF typically operates with an input voltage range of 36V to 57V (as per PoE specifications) and provides regulated output voltages as required by the connected PDs.
Q: Does LTC4253IGN#TRPBF require any external components for operation? A: Yes, LTC4253IGN#TRPBF requires external components such as resistors, capacitors, and inductors to configure its operation and provide necessary power management functions.
Q: Is LTC4253IGN#TRPBF available in different package options? A: Yes, LTC4253IGN#TRPBF is available in various package options, including the 16-lead SSOP package, which is denoted by the "GN" suffix in the part number.
Please note that the answers provided here are general and may vary based on specific application requirements and datasheet information.