MCZ34670 Datasheet | Motorola Semiconductor

Features - - - - - - - - - - - - - Integrated IEEE 802.3af pliant Interface Signature Detection and Classification Functionality Integrated Isolation Switch Programmable Inrush Current Limiting Control Adjustable Undervoltage Lockout Input Voltage Range up to 80 V Current Mode Control Adjustable Oscillator Leading Edge Blanking Internal Slope pensation Circuitry Input Overvoltage Protection 50% Duty Cycle Limitation Pb-Free Packaging Designated by Suffix Code EG POWER OVER ETHERNET EG SUFFIX (PB-FREE) 98ASB42343B 20-PIN SOICW ORDERING INFORMATION Device MCZ34670EG/R2 Temperature Range (TA) -40°C to 85°C Package 20 SOICW PSE HUB OR SWITCH TX PHY RX RJ-45 ETHERNET APPLIANCE (PD) RX PHY TX HOST PROCESSOR 48 V POWER SUPPLY PSE POWER CONTROLLER SWITCH -48V GND -48V CAT 5 CABLE PD POWER CONTROLLER ISOLATION SWITCH HOST CONTROLLER DC/DC Figure 1. 34670 Simplified Application Diagram - This document contains certain information on a new product. Specifications and information herein are subject to change without notice. © Freescale Semiconductor, Inc., 2006. All rights reserved. Data Sheet 4 U . .. INTERNAL BLOCK DIAGRAM INTERNAL BLOCK DIAGRAM FREQ VPWR 2.5V 8V 0.8R R INTERNAL SUPPLY POR EN UNDERVOLTAGE UV or UVLO LOCKOUT OVERVOLTAGE DETECTION CONTROL LOGIC UV or UVLO 5µA + HIGH VOLTAGE REGULATOR 5.7V S R Q R 3.5V RCLA GATE...