LTC4263
FEATURES n IEEE 802®.3af pliant n Operation from a Single 48V Supply n Fully Autonomous Operation without
Microcontroller n Internal MOSFET with Thermal Protection n Power Management Works Across Multiple Ports with Simple RC Network n Precision Inrush Control with Internal Sense Resistor n Powered Device (PD) Detection and Classification n AC and DC Disconnect Sensing n Robust Short-Circuit Protection n Pin-Selectable Detection Backoff for Midspan PSEs n Classification Dependent ICUT Current Threshold n LED Driver Indicates Port On and Blinks
Status Codes n Available in 14-Pin SO and 4mm × 3mm DFN Packages
APPLICATIONS n IEEE 802.3af pliant Endpoint/Midspan PSEs n Single-Port or Multi-Port Power Injectors n Power Forwarders n Low-Port Count PSEs n Environment B PSEs n Standalone PSEs
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