LTC4252BIMS8-2#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 in PoE systems

Package: MSOP-8

Essence: The LTC4252BIMS8-2#TRPBF is a PoE controller IC that allows for the efficient delivery of power and data to PoE-enabled devices.

Packaging/Quantity: The LTC4252BIMS8-2#TRPBF is available in a MSOP-8 package. It is typically sold in reels or trays, 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
• Package Type: MSOP-8

Pin Configuration

The LTC4252BIMS8-2#TRPBF has the following pin configuration:

1. VOUT
2. GND
3. NC
4. NC
5. NC
6. NC
7. VIN
8. NC

Functional Features

• Supports both IEEE 802.3af and IEEE 802.3at standards for PoE
• Provides detection, classification, and current limiting functions
• Offers programmable undervoltage lockout (UVLO) and overvoltage protection (OVP)
• Includes thermal shutdown protection
• Supports power-down mode for energy-saving operation

Advantages and Disadvantages

Advantages: - Compliance with industry standards ensures compatibility with a wide range of PoE devices - Comprehensive protection features enhance system reliability and safety - Programmable UVLO and OVP allow for customization based on specific application requirements - Power-down mode helps reduce energy consumption

Disadvantages: - Limited maximum output current may not be suitable for high-power PoE applications - MSOP-8 package may require additional thermal management measures in certain scenarios

Working Principles

The LTC4252BIMS8-2#TRPBF operates by receiving power from an external DC source and converting it into the appropriate voltage and current levels required for PoE-enabled devices. It incorporates detection and classification mechanisms to identify connected devices and provide them with the necessary power. The IC also includes various protection features to ensure safe and reliable operation.

Detailed Application Field Plans

The LTC4252BIMS8-2#TRPBF is commonly used in the following application fields:

1. IP Cameras: Enables the delivery of power and data to IP cameras over Ethernet cables, eliminating the need for separate power supplies.
2. Wireless Access Points: Provides power to wireless access points, simplifying installation and reducing cable clutter.
3. VoIP Phones: Allows for the integration of power and data transmission in VoIP phone systems, enhancing convenience and flexibility.

Detailed and Complete Alternative Models

1. LTC4267-2: Similar to the LTC4252BIMS8-2#TRPBF, this IC offers enhanced power management features and supports higher output currents.
2. MAX5941: Another PoE controller IC that provides advanced power management capabilities and supports both IEEE 802.3af and IEEE 802.3at standards.

These alternative models offer similar functionality to the LTC4252BIMS8-2#TRPBF and can be considered as alternatives based on specific application requirements.

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