SI3453D-B02-GM

Description：IC POE CNTRL 4 CHANNEL 40QFN
Series：-
Mfr：Skyworks Solutions Inc.
Package：Tray

SKU:4c15627a145e Category: Power Over Ethernet (PoE) Controllers Brand: Skyworks Solutions Inc.

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Product introduction

Product Detailed Parameters

Description：IC POE CNTRL 4 CHANNEL 40QFN
Series：-
Mfr：Skyworks Solutions Inc.
Package：Tray
Type：Controller (PSE)
Number of Channels：4
Power - Max：40 W
Internal Switch(s)：Yes
Auxiliary Sense：No
Standards：802.3at (PoE+), 802.3af (PoE)
Voltage - Supply：45V ~ 57V
Current - Supply：4mA
Operating Temperature：-40°C ~ 85°C
Mounting Type：Surface Mount
Package / Case：40-VFQFN Exposed Pad
Supplier Device Package：40-QFN (6x6)

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SI3453D-B02-GM

Overview

The SI3453D-B02-GM is a four-channel Power over Ethernet (PoE) controller designed for IEEE 802.3af and 802.3at standards. It operates as a Powered System Equipment (PSE) controller with an internal switch architecture. The device supports a supply voltage range of 45V to 57V and draws a supply current of 4mA. It features a maximum power output of 40W per channel and functions within a temperature range of -40°C to +85°C. The component is housed in a 40-VFQFN package with exposed pad, measuring 6x6 mm.

Feature Summary

Integrates four independent PoE channels compliant with IEEE 802.3af and 802.3at standards
Includes internal high-side switches for direct port connection without external MOSFETs
Supports powered system equipment (PSE) classification and detection logic
Operates within extended industrial temperature ranges

Applications

Four-port PoE network switches
Power over Ethernet midspan injectors
Industrial networking infrastructure controllers
Access point power distribution units

Procurement Notes

Verify component authenticity through authorized Skyworks distributors due to obsolescence status. Confirm lot traceability and moisture sensitivity level handling requirements before assembly. Cross-reference pinouts with official datasheets to ensure compatibility with existing PCB layouts. Validate replacement availability if production continuity is required.

Selection Notes

Select this controller for designs requiring integrated four-channel PoE management with minimal external component count. Ensure the application supports the specified 45V to 57V input range. Verify thermal dissipation capabilities for the 40W maximum power rating per channel. Consider the 40-QFN package constraints for board space and soldering processes.

Part Context

This component belongs to the SI3453 family of PoE controllers from Skyworks Solutions. It serves as a specialized interface between Ethernet data lines and power delivery systems. The device simplifies PSE implementation by combining control logic with power switching elements. It targets high-density networking applications requiring standardized power delivery protocols.