MIC2358YLQ

Overview

The MIC2358YLQ is an octal Power Sourcing Equipment (PSE) controller designed for IEEE 802.3af compliant Power over Ethernet applications. It manages eight independent PoE channels, supporting a maximum power output of 15.4 W per port. The device operates within a supply voltage range of 43 V to 60 V and features a low quiescent current of 50 μA. Packaged in a 64-pin LQFP format, it integrates classification, disconnect detection, and protection mechanisms required for reliable network power delivery.

Feature Summary

• Supports eight independent IEEE 802.3af compliant PoE channels
• Integrates disconnect detection to shut off power when a powered device is removed
• Operates with a wide input supply voltage range from 43 V to 60 V

Applications

• IEEE 802.3af compliant Power Sourcing Equipment (PSE)
• Octal Power over Ethernet controllers
• Network infrastructure power distribution

Procurement Notes

Verify the manufacturer origin, as the component was originally developed by Micrel Semiconductor before its acquisition by Microchip Technology. Confirm the specific package variant matches the 64-LQFP requirement. Ensure the datasheet version aligns with the intended operational specifications for your design.

Selection Notes

Select this component for designs requiring high-density PoE integration with eight ports. It is suitable for applications needing strict adherence to IEEE 802.3af standards. Consider the thermal management requirements associated with the LQFP package when designing the PCB layout for optimal performance.

Part Context

This part belongs to the family of octal PSE controllers used in networking equipment. It provides a consolidated solution for managing multiple PoE ports, reducing board space compared to single-channel alternatives. The device supports standard classification procedures to identify connected powered devices accurately.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.