Silicon Labs SI3453A-B02-GMR

Description
The Si3453 is a high-voltage port controller designed for Power over Ethernet (PoE) and PoE Power Sourcing Equipment (PSEs). It supports four PSE power interfaces and offers programmable current limits for PoE (15.4 W), PoE (30 W), and proprietary systems (up to 40 W) per port. The PC interface requires no external MCU, enabling easy and cost-effective management of 4 to 48 ports by the host system.

Features
Supports four PSE power interfaces
Programmable current limits for PoE, PoE , and proprietary systems
PC interface with no external MCU required
Unique mixed-signal IC high-voltage component integration
Internal low-Ron power FETs with current-sense circuitry
Integrated transient voltage surge suppressors
DC disconnect sensing method
Programmable architecture for IEEE 802.3af and 802.3at PSEs
Per-port current and voltage monitoring
Power policing mode
Robust multi-point detection
Supports 1-Event and 2-Event classification algorithms
Comprehensive fault-protection circuitry
Industrial (-40 to 85 °C) operating temperature
Compact, 6x6 mm², 40-pin QFN package

Applications
Power over Ethernet Endpoint
Industrial automation systems
Networked audio
Pan/Tilt/Zoom security cameras
802.11n WAPs
Multi-band, multi-radio WAPs
Security and RFID systems
IP Phone Systems and iPBXs
Metropolitan area networked WAPs, cameras, and sensors
WIMAX ASN/BTS and CPE/ODU systems