LTC4296-1 Datasheet | Analog Devices

FEATURES - IEEE 802.3cg-pliant SPo E PSE - Five independent PSE ports - Wide input-supply operating range: 6 V to 60 V - Adjustable source and return electronic circuit breakers - 52 µA (typical) and 51 μA (typical) input supply current in sleep and disabled states, respectively - Charge pump enhances the external, high-side, N-channel MOS- FETs - Supports SCCP with external microcontroller - SPI bus interface with PEC - Voltage, current, and temperature telemetry - Per port power-good parators - PD sleep, wake-up, and wake-up forwarding support - Available in 48-lead, 7 mm × 7 mm, QFN package APPLICATIONS - Operational technology (OT) systems - Building and factory automation systems - Field instruments and switches - Security systems - Traffic control systems TYPICAL APPLICATION Data Sheet LTC4296-1 5-Port SPo E PSE Controller GENERAL DESCRIPTION The LTC4296-1 is an IEEE 802.3cg-pliant, five port, single-pair power over Ethernet (SPo E), power sourcing equipment (PSE) controller. SPo E simplifies system design and installation with standardized power and Ethernet data over a single-pair cable. The LTC4296-1 is designed for interoperability with 802.3cg powered devices (PDs) in 24 V or 54 V systems. The LTC4296-1 delivers power using external, low drain-to-source on resistance (RDS(ON)), N-channel metal-oxide semiconductor field-effect transistors (MOSFETs), which minimize voltage drop and ensure application ruggedness. High-side circuit breakers with foldback, analog current limit (ACL) provide controlled inrush and short-circuit protection. An optional low-side circuit breaker protects the negative output against backfeed faults, and ground faults in nonisolated applications. PD classification via the serial munication classification protocol (SCCP) and maintain full voltage signature (MFVS) ensure full operating voltage is only applied to the cable when a PD is present. The SWx pins disconnect port power snubbers during detection and classification. PD initiated...