LTC4257IS8#PBF - Analog Devices Inc.

Manufacturer Part Number

LTC4257IS8#PBF

Manufacturer

Analog Devices

Introduction

The LTC4257IS8#PBF is a Power over Ethernet (PoE) controller IC for powered devices in a PoE system.

Product Features and Performance

Controller for Power over Ethernet applications

Supports IEEE 802.3af standard

Single channel operation

Integrated power MOSFET

Power output up to 12.95W

57V maximum supply voltage

Supports surface mount technology for easy PCB integration

Compatible with 8-SOIC packaging

Product Advantages

High integration simplifies design

Built-in MOSFET reduces external component count

Designed for use in IEEE 802.3af compliant systems

Low operating current of 3mA to reduce power consumption

Operates over a wide temperature range for industrial applications

Key Technical Parameters

Number of Channels: 1

Power - Max: 12.95 W

Internal Switch(s): Yes

Standards: IEEE 802.3af

Voltage - Supply: 57V (Max)

Current - Supply: 3mA

Operating Temperature: -40°C to 85°C

Mounting Type: Surface Mount

Package / Case: 8-SOIC

Supplier Device Package: 8-SO

Quality and Safety Features

Robust design for industrial temperature ranges

Compliant with industry standards for safety

Compatibility

Compatible with IEEE 802.3af compliant PoE systems

Mountable on PCBs with standard SOIC-8 footprint

Application Areas

VoIP phones

Wireless access points

Security camera systems

Networked appliances

Industrial controllers

Product Lifecycle

Status: Active

Not nearing discontinuation

Suitable replacements or upgrades may be available with newer technology

Several Key Reasons to Choose This Product

Ease of integration into existing PoE systems

Support for standard PoE power levels up to 12.95W

Reliability across industrial temperature ranges

Reduced component count with integrated internal MOSFET

Compliance with IEEE 802.3af for broad compatibility

Low supply current for power-efficient operation

Direct mounting on printed circuit boards with SMT

Available in the common 8-SOIC package format