LINEAR TECHNOLOGY - LTC4258 handbook

LTC4258 is a quad –48V Hot Swap TM controller de- signed for use in IEEE 802.3af compliant Power Sourcing Equipment (PSE). It consists of four independent ports, each with output current limit, short-circuit protec- tion, complete Powered Device (PD) detection and classi- fication capability, and programmable PD disconnect using DC sensing.