Datasheet Linear Technology LTC4290BIUJ#TRPBF — 数据表

LTC4290/LTC4271
8-Port PoE/PoE+/LTPoE++
PSE Controller
FEATURES DESCRIPTION Eight Independent PSE Channels
nn Compliant with IEEE 802.3at Type 1 and 2
nn Chipset Provides Electrical Isolation
nn Reduced BOM Cost
nn Eliminates up to 6 High Speed Opto-Couplers
nn Eliminates Isolated 3.3V Power Supply
nn Low Power Dissipation
nn 0.25О© Sense Resistance Per Channel
nn Very High Reliability 4-Point PD Detection
nn 2-Point Forced Voltage
nn 2-Point Forced Current
nn V
EE and VPORT Monitoring
nn 1 Second Rolling I
PORT Averaging
nn Supports 2-Pair and 4-Pair Output Power
nn 1MHz I2C Compatible Serial Control Interface
nn Available In Three Power Grades
nn A-Grade – LTPoE++™ 38.7W to 90W
nn B-Grade – PoE+ 25.5W …