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Si3452B-B01-GM Datasheet(PDF) 1 Page - Silicon Laboratories |
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Si3452B-B01-GM Datasheet(HTML) 1 Page - Silicon Laboratories |
1 / 36 page Rev. 1.0 4/10 Copyright © 2010 by Silicon Laboratories Si3452/3 Q UAD H IGH-VOLTAGE P ORT C ONTROLLER FOR P OE AND P OE+ PSE S Features Applications Each Si3452/3 high-voltage port controller supports four PSE power interfaces Programmable current limits for PoE (15.4 W), PoE+ (30 W), and proprietary systems (up to 40 W) per port I2C interface requires no external MCU for easy, low-cost management of 4 to 48 ports by the host system Unique mixed-signal IC high-voltage component integration simplifies design, lowers power dissipation, minimizes external BOM, and reduces PCB footprint Internal low-RON power FETs with current-sense circuitry Integrated transient voltage surge suppressors DC disconnect (Si3453) or proprietary dV/dt disconnect (Si3452) sensing methods Programmable architecture supports IEEE 802.3af (PoE) and IEEE 802.3at (PoE+) PSEs Programmable current limits for PoE (350 mA) and PoE+ (600 mA), and custom limits to 850 mA Per-port current and voltage monitoring for sophisticated power management and control Power policing mode Robust multi-point detection Supports 1-Event and 2-Event classification algorithms Comprehensive, robust, fault- protection circuitry Supply under-voltage lockout (UVLO) Output current limit and short- circuit protection Foldback current limiting Dual-threshold thermal overload protection Fault source reporting for intelligent port management Extended commercial (–10 to 85 °C) and industrial (–40 to 85 °C) operating temperatures Compact, 6×6 mm2, 40-pin QFN RoHS-compliant package Power over Ethernet Endpoint switches and Midspans for IEEE Std 802.3af and 802.3at Supports high power PDs, such as: Pan/Tilt/Zoom security cameras 802.11n WAPs Multi-band, multi-radio WAPs Security and RFID systems Industrial automation systems Networked audio IP Phone Systems and iPBXs Metropolitan area networked WAPs, cameras, and sensors WiMAX ASN/BTS and CPE/ODU systems Ordering Information: See page 30. Pin Assignments 40-pin QFN See "9. Pin Descriptions" on page 27. VEE VEE1 AIN RBIAS VREF AGND AOUT 1 2 3 4 5 6 7 AGND 8 DGND VDD AD1 AD3 AD0 AD2 AD2 30 29 28 27 26 25 24 VEE4 10 NC 9 VEE3 22 RST 23 AD3 21 Si3452 (Top View) Si3452/53 |
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