Si3452 Datasheet | Silicon Labs

for N NCo11t Ne Rwec D 4o0 INe Tsmigmnesnded QUAD HIGH-VOLTAGE PORT CONTROLLER FOR POE AND POE+ PSES Features - Each Si3452 high-voltage port - Programmable architecture supports controller supports four PSE power IEEE 802.3af (Po E) and IEEE interfaces 802.3at (Po E+) PSEs - Programmable current limits for Po E - Programmable current limits for (15.4 W), Po E+ (30 W), and Po E (350 m A) and Po E+ proprietary systems (up to 40 W) per (600 m A), and custom limits to port 850 m A - I2C interface requires no external - Per-port current and voltage MCU for easy, low-cost management monitoring for sophisticated power of 4 to 48 ports by the host system management and control - Unique mixed-signal IC high-voltage - Power policing mode ponent integration simplifies - Robust multi-point detection design, lowers power dissipation, - Supports 1-Event and 2-Event minimizes external BOM, and classification algorithms reduces PCB footprint - prehensive, robust, fault- - Internal low-RON power FETs with current-sense circuitry - Integrated transient voltage surge suppressors protection circuitry - Supply undervoltage lockout (UVLO) - Output current limit and short- - Proprietary d V/dt disconnect sensing methods - Industrial (- 40 to 85 °C) operating temperature - pact, 6×6 mm2, 40-pin QFN Ro HS-pliant package circuit protection - Foldback current limiting - Dual-threshold thermal overload protection - Fault source reporting for intelligent port...