Rochester Electronics PMIC - Power Over Ethernet (PoE) Controllers MAX5935CAX+

The MAX5935CAX+ is a quad network power controller designed for Power-over-Ethernet (PoE) applications compliant with IEEE 802.3af standards. It supports both endpoint and midspan power sourcing equipment (PSE) configurations, enabling the control of four independent -48V-powered Ethernet ports. The device features automatic power device (PD) discovery, classification, and current limiting, along with DC and AC load disconnect detection capabilities. This controller operates autonomously or can be controlled via an I2C-compatible interface, allowing for extensive programmability and configuration. Key features include input under/overvoltage lockout, overtemperature protection, and a watchdog mode for hardware recovery in case of software failure. The MAX5935CAX+ is housed in a 36-pin SSOP package and is rated for commercial temperature ranges from 0¬8C to +70¬8C, making it suitable for various applications requiring reliable power management in network devices.