DESCRIPTION

· The SLUS559B document, revised in July 2004, details the specifications and features of a Power Over Ethernet (PoE) compliant device, designed to meet the IEEE 802.3af standard. It includes functionalities for power management, fault detection, and system integration.

FEATURES

· Compliant with IEEE 802.3af PoE standard.
· Features two-point 25-kΩ resistor discovery and capacitive detection for legacy loads.
· Includes power classification and controlled di/dt ramp for EMI reduction.
· Equipped with current management, electronic circuit breaker, and fault detection.
· Supports undervoltage lockout, overcurrent, and undercurrent detection.
· Provides 12-bit port current and voltage acquisition.
· Features a standard slave I2C serial interface with 5-bit serial address selectability.
· Includes opto-coupler compatible SDA and SCL lines for ground isolation.
· Dual color LED driver for port status and hardware FAULT interrupt.
· Operates on a single +48-V supply.

APPLICATIONS

· Suitable for PoE switches and mid-span injectors.
· Designed for integration in network systems requiring power and data over Ethernet cables.