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LTC4252BCMS8-1#PBF
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LTC4252BCMS8-1#PBF

Product Overview

Category

The LTC4252BCMS8-1#PBF belongs to the category of integrated circuits (ICs) and specifically falls under the power management ICs.

Use

This product is primarily used for power sourcing equipment (PSE) applications in Power over Ethernet (PoE) systems. It provides a complete solution for implementing IEEE 802.3af-compliant PSE devices.

Characteristics

  • The LTC4252BCMS8-1#PBF is designed to deliver power to Ethernet-powered devices such as IP phones, wireless access points, and network cameras.
  • It supports both 10/100Mbps and Gigabit Ethernet data rates.
  • This IC offers advanced features like programmable current limit, thermal shutdown protection, and fault detection.
  • It operates with a wide input voltage range, making it suitable for various PoE applications.
  • The LTC4252BCMS8-1#PBF is RoHS compliant.

Package

This product comes in an MSOP-8 package, which stands for Mini Small Outline Package. It has eight pins and a compact form factor, allowing for space-efficient integration into electronic devices.

Essence

The essence of the LTC4252BCMS8-1#PBF lies in its ability to provide power to Ethernet-connected devices through PoE technology. It simplifies the implementation of PSE devices by offering a comprehensive set of features in a compact package.

Packaging/Quantity

The LTC4252BCMS8-1#PBF is typically available in tape and reel packaging. Each reel contains a specific quantity of ICs, usually around 2500 units.

Specifications

  • Input Voltage Range: 36V to 57V
  • Output Voltage Range: 44V to 57V
  • Maximum Output Current: 400mA
  • Operating Temperature Range: -40°C to 85°C
  • Package Type: MSOP-8

Detailed Pin Configuration

The LTC4252BCMS8-1#PBF has the following pin configuration:

  1. VOUT: Output Voltage
  2. GND: Ground
  3. VCC: Supply Voltage
  4. NC: No Connection
  5. NC: No Connection
  6. NC: No Connection
  7. NC: No Connection
  8. VIN: Input Voltage

Functional Features

  • Programmable current limit allows customization based on specific application requirements.
  • Thermal shutdown protection prevents damage due to excessive heat.
  • Fault detection mechanism ensures safe operation by detecting and responding to abnormal conditions.

Advantages and Disadvantages

Advantages

  • Supports both 10/100Mbps and Gigabit Ethernet data rates, providing flexibility for various network configurations.
  • Wide input voltage range enables compatibility with different PoE systems.
  • Compact package size facilitates integration into space-constrained devices.
  • Comprehensive set of features simplifies the implementation of PSE devices.

Disadvantages

  • Limited maximum output current may not be suitable for high-power PoE applications.
  • Lack of detailed documentation or support materials may pose challenges for inexperienced users.

Working Principles

The LTC4252BCMS8-1#PBF operates as a power sourcing equipment (PSE) device in a Power over Ethernet (PoE) system. It receives power from an external power supply and delivers it to Ethernet-powered devices through the Ethernet cable. The IC incorporates various control and protection mechanisms to ensure safe and efficient power delivery.

Detailed Application Field Plans

The LTC4252BCMS8-1#PBF finds applications in a wide range of PoE-enabled devices, including but not limited to: - IP phones - Wireless access points - Network cameras - Security systems - Industrial automation equipment

Detailed and Complete Alternative Models

  1. LTC4252A: Similar to LTC4252BCMS8-1#PBF, but with a different package type (SSOP-16).
  2. LTC4252B: Variant with enhanced current limit capabilities (up to 800mA).
  3. LTC4252C: Higher voltage range version suitable for specific PoE applications.

These alternative models offer similar functionality and can be considered as substitutes based on specific requirements.

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Liste 10 almindelige spørgsmål og svar relateret til anvendelsen af LTC4252BCMS8-1#PBF i tekniske løsninger

Sure! Here are 10 common questions and answers related to the application of LTC4252BCMS8-1#PBF in technical solutions:

Q1: What is LTC4252BCMS8-1#PBF? A1: LTC4252BCMS8-1#PBF is a specific model number for a power sourcing equipment (PSE) controller chip used in Power over Ethernet (PoE) applications.

Q2: What is the purpose of LTC4252BCMS8-1#PBF? A2: The purpose of LTC4252BCMS8-1#PBF is to provide power and control functions for PoE-enabled devices, allowing them to receive power and data over a single Ethernet cable.

Q3: What are the key features of LTC4252BCMS8-1#PBF? A3: Some key features of LTC4252BCMS8-1#PBF include IEEE 802.3af compliance, integrated detection and classification, programmable current limit, and thermal shutdown protection.

Q4: How does LTC4252BCMS8-1#PBF work? A4: LTC4252BCMS8-1#PBF works by monitoring the power requirements of connected PoE devices, negotiating power levels, and providing the necessary power through the Ethernet cable.

Q5: What are some typical applications of LTC4252BCMS8-1#PBF? A5: LTC4252BCMS8-1#PBF is commonly used in various PoE applications such as IP cameras, wireless access points, VoIP phones, and other networked devices that require both power and data connectivity.

Q6: What is the maximum power output of LTC4252BCMS8-1#PBF? A6: The maximum power output of LTC4252BCMS8-1#PBF depends on the power supply used, but it is typically capable of delivering up to 15.4W of power per port.

Q7: Can LTC4252BCMS8-1#PBF be used in both 10/100Mbps and Gigabit Ethernet networks? A7: Yes, LTC4252BCMS8-1#PBF is compatible with both 10/100Mbps and Gigabit Ethernet networks.

Q8: Does LTC4252BCMS8-1#PBF support power management features? A8: Yes, LTC4252BCMS8-1#PBF supports various power management features such as overcurrent protection, short-circuit detection, and thermal shutdown.

Q9: Is LTC4252BCMS8-1#PBF a standalone chip or does it require additional components? A9: LTC4252BCMS8-1#PBF is a standalone chip, but it may require external components such as power supply, magnetics, and Ethernet connectors for a complete PoE solution.

Q10: Where can I find more information about LTC4252BCMS8-1#PBF? A10: You can find more detailed information about LTC4252BCMS8-1#PBF in its datasheet, which is available on the manufacturer's website or through authorized distributors.