LTC9111RMSE#PBF

LTC9111RMSE#PBF is an industrial SPoE PD controller. It is a IEEE 802.3cg compliant single-pair power over ethernet (SPoE) powered device controller. A wide 2.3V to 60V operating range capability with polarity correction makes this particularly well suited for classification-based systems in building and factory automation. SCCP-based classification ensures full operating voltage is applied by the power sourcing equipment only when a valid PD is connected. This drives two external N-channel MOSFET switches during classification with the micropower operation to minimize reservoir capacitor requirements. An external N-channel MOSFET switch isolates the output capacitance from the connector during classification and inrush. A voltage supervisor enables the external MOSFET when the PD input voltage exceeds the ON voltage threshold for the configured class and after a mandated delay. Application includes building automation, factory automation, security system, and traffic control system.

• 12-pin plastic MSOP with exposed pad package, temperature range from -40°C to 150°C
• Supports serial communication classification protocol (SCCP)
• Wakeup signature, integrated 3.5V standby regulator
• 150µA maximum current during classification
• Drives low-side bridge MOSFETs for polarity correction
• Charge pump enhances external N-channel MOSFET
• Pin programmable class configuration

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