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Analog Devices Inc. LTC4296-1 5-Port SPoE PSE Controller is an IEEE 802.3cg-compliant, five port, single-pair power over Ethernet (SPoE), power sourcing equipment (PSE) controller. SPoE 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 24V or 54V 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 and analog current limit (ACL) provide controlled inrush and short-circuit protection. An optional low-side circuit breaker protects the negative output against the back feed and ground faults in non-isolated applications. PD is classified via the serial communication classification protocol (SCCP) and maintains a full voltage signature (MFVS) to ensure that the 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 sleep and wake-up are supported. The WAKE-UP pin supports wake-up forwarding. Telemetry, status, and software control features are accessed via a serial peripheral interface (SPI) bus interface with packet error code (PEC) protection.
The LTC4296-1 provides a versatile SPoE PSE solution for 10BASE-T1L controllers and switches. This device can easily be integrated with the Analog Devices, Inc., 10BASE-T1L transceiver portfolio, such as the ADIN1100 (physical layer, PHY), ADIN1110 (MACPHY), and ADIN2111 (2-port switch).
