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LTC4253ACGN#TRPBF
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LTC4253ACGN#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 - Enables power management and control for PoE systems

Package: 16-Lead SSOP (Shrink Small Outline Package)

Essence: LTC4253ACGN#TRPBF is a highly integrated PoE controller designed to simplify the implementation of PoE systems.

Packaging/Quantity: The LTC4253ACGN#TRPBF is available in tape and reel packaging, with a minimum order quantity of 250 units.

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

Detailed Pin Configuration

The LTC4253ACGN#TRPBF has 16 pins arranged as follows:

  1. VDD - Power supply input
  2. GND - Ground
  3. VEE - Negative power supply input
  4. PSECTRL - Control pin for PSE operation
  5. PWRGD - Power good indicator output
  6. CLASS - Classification resistor input
  7. AUX - Auxiliary power output
  8. VOUT - Output voltage
  9. VREF - Reference voltage output
  10. VSENSE - Current sense input
  11. ISET - Current limit set pin
  12. SENSE - Sense resistor input
  13. FLT - Fault indicator output
  14. INTVCC - Internal voltage regulator output
  15. NC - No connection
  16. NC - No connection

Functional Features

  • Integrated power management functions for PoE systems
  • Supports automatic classification and detection of powered devices
  • Provides overcurrent and short-circuit protection
  • Enables power monitoring and fault detection
  • Offers auxiliary power output for external circuitry

Advantages and Disadvantages

Advantages: - Simplifies implementation of PoE systems - Supports industry-standard IEEE 802.3af/at - Provides comprehensive power management features - Offers overcurrent and short-circuit protection

Disadvantages: - Limited maximum output current (400mA) - Requires additional external components for complete PoE system implementation

Working Principles

The LTC4253ACGN#TRPBF operates by receiving power from an Ethernet cable connected to a Power Sourcing Equipment (PSE). It provides power and data to PoE-enabled devices, such as IP cameras or wireless access points. The controller supports automatic classification and detection of powered devices, ensuring compatibility with various PoE standards.

The device incorporates power management functions, including overcurrent and short-circuit protection, to safeguard the connected devices. It also offers power monitoring and fault detection capabilities, allowing for efficient troubleshooting and maintenance of the PoE system.

Detailed Application Field Plans

The LTC4253ACGN#TRPBF is commonly used in the following applications:

  1. IP Surveillance Systems: The controller enables the integration of PoE functionality into IP cameras, simplifying installation and reducing wiring complexity.

  2. Wireless Access Points: By providing power and data over a single Ethernet cable, the LTC4253ACGN#TRPBF facilitates the deployment of wireless access points in locations where power outlets are limited.

  3. VoIP Phones: The controller allows for the implementation of PoE in Voice over IP (VoIP) phone systems, eliminating the need for separate power adapters and reducing clutter.

  4. Industrial Automation: The LTC4253ACGN#TRPBF finds applications in industrial environments where PoE is utilized to power and control various devices, such as sensors and actuators.

Detailed and Complete Alternative Models

  1. LTC4257-1: A similar PoE controller with enhanced features, including higher output current capability and additional fault protection mechanisms.

  2. MAX5941: An alternative PoE controller offering advanced power management functions and compatibility with both IEEE 802.3af and 802.3at standards.

  3. TPS23861: A highly integrated PoE controller supporting up to 90W of power delivery and featuring advanced diagnostics and monitoring capabilities.

  4. PD69208: A compact PoE controller designed for low-power applications, offering cost-effective power management solutions.

These alternative models provide a range of options with varying features and specifications, allowing users to select the most suitable controller for their specific PoE system requirements.

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10 pirs û bersivên hevpar ên têkildarî sepana LTC4253ACGN#TRPBF di çareseriyên teknîkî de navnîş bikin

Sure! Here are 10 common questions and answers related to the application of LTC4253ACGN#TRPBF in technical solutions:

  1. Q: What is LTC4253ACGN#TRPBF? A: LTC4253ACGN#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.

  2. Q: What is the purpose of LTC4253ACGN#TRPBF? A: The purpose of LTC4253ACGN#TRPBF is to provide power management and control functions for PoE systems, allowing devices to be powered and communicate over a single Ethernet cable.

  3. Q: What are the key features of LTC4253ACGN#TRPBF? A: Some key features of LTC4253ACGN#TRPBF include IEEE 802.3af/at compliant PSE operation, programmable current limit, thermal shutdown protection, and support for various power management modes.

  4. Q: How does LTC4253ACGN#TRPBF work? A: LTC4253ACGN#TRPBF works by controlling the power delivery to connected PoE devices. It monitors the power requirements of the devices and adjusts the power output accordingly, while also providing protection against overcurrent and overheating.

  5. Q: What are the typical applications of LTC4253ACGN#TRPBF? A: LTC4253ACGN#TRPBF is commonly used in various PoE applications such as IP cameras, wireless access points, VoIP phones, and other network-connected devices that require both power and data transmission over Ethernet.

  6. Q: Can LTC4253ACGN#TRPBF be used in non-PoE applications? A: While LTC4253ACGN#TRPBF is specifically designed for PoE applications, it can also be used in non-PoE applications where power management and control functions are required.

  7. Q: What is the maximum power output of LTC4253ACGN#TRPBF? A: The maximum power output of LTC4253ACGN#TRPBF depends on the specific implementation and external components used. It supports both IEEE 802.3af (up to 15.4W) and IEEE 802.3at (up to 30W) power levels.

  8. Q: Does LTC4253ACGN#TRPBF require any external components? A: Yes, LTC4253ACGN#TRPBF requires external components such as MOSFETs, transformers, and passive components to complete the PoE system design.

  9. Q: Is LTC4253ACGN#TRPBF compatible with other PoE standards? A: Yes, LTC4253ACGN#TRPBF is compatible with various PoE standards including IEEE 802.3af and IEEE 802.3at. It can also work with devices that comply with proprietary PoE implementations.

  10. Q: Where can I find more information about LTC4253ACGN#TRPBF? A: You can find more detailed information about LTC4253ACGN#TRPBF, including datasheets, application notes, and technical support, on the Analog Devices website or by contacting their customer support team.