LTC9111RMSE#PBF

Overview

The LTC9111RMSE#PBF is an IEEE 802.3cg compliant Single-Pair Power over Ethernet (SPoE) Powered Device controller manufactured by Analog Devices Inc. It operates within a wide input voltage range of 2.3V to 60V and features polarity correction capabilities. The device supports Serial Communication Classification Protocol (SCCP) and includes an integrated 3.5V standby regulator. It drives external low-side N-channel MOSFETs for polarity correction with a low start-up voltage of 1.6V. The component is housed in a 12-pin MSOP package.

Feature Summary

• IEEE 802.3cg compliance for SPoE applications
• Supports SCCP-based classification
• Integrated 3.5V standby regulator
• Low-power polarity correction drive

Applications

• Building automation systems
• Factory automation systems
• Classification-based power delivery networks

Procurement Notes

Verify the specific suffix RMSE#PBF against official Analog Devices documentation to confirm package type and temperature grade. Ensure compatibility with required external MOSFETs for polarity correction. Confirm availability status as distribution channels may vary.

Selection Notes

Select this component for designs requiring strict adherence to IEEE 802.3cg standards. Consider the 2.3V to 60V operating range for flexible input supply scenarios. Evaluate the need for external MOSFETs for polarity correction and inrush isolation based on system topology.

Part Context

This part belongs to the LTC9111 series of SPoE controllers. It is designed specifically for Powered Device implementations in Single-Pair Ethernet environments, offering a compact solution for industrial and commercial automation applications requiring efficient power management.

Replacement Considerations

Consult Analog Devices documentation for direct substitutes. Verify pinout and electrical specifications match before substitution.