TPS23881B1RTQR

Overview

The TPS23881B1RTQR is a Power Sourcing Equipment (PSE) controller from Texas Instruments, designed for IEEE 802.3bt Type-4 applications. It integrates eight independent channels within a single QFN-56 package to support four-pair PoE deployments. The device operates with a supply voltage range of 3 V to 3.6 V and features a low quiescent current of 6 mA. It supports an operating temperature range from -40°C to +125°C and includes a current limit setting of 75 mA per channel.

Feature Summary

• Supports IEEE 802.3bt Type-4 four-pair Power-over-Ethernet standards
• Integrates eight independent power channels in a compact footprint
• Includes comprehensive protection mechanisms for port safety

Applications

• High-power Ethernet switch designs
• Wireless access point infrastructure
• PoE midspan power injectors

Procurement Notes

Verify the specific suffix 'ARTQR' against official documentation to confirm tape-and-reel packaging and moisture sensitivity classification. Ensure compatibility with the required PCB thermal pad design for the QFN-56 package. Confirm that the 3V to 3.6V supply rail matches the system architecture before procurement.

Selection Notes

Select this component when designing systems requiring high-density PoE integration with support for Type-4 power levels. The eight-channel configuration reduces board space compared to discrete solutions. Verify that the application environment remains within the specified -40°C to +125°C operational temperature limits.

Part Context

This part belongs to the TPS23881B series of PoE PSE controllers. It is distinct from the standard TPS23881 due to specific internal configurations or manufacturing revisions indicated by the suffix. It serves as a core power management solution for modern high-bandwidth networking equipment.

Replacement Considerations

The TPS23881B1ARTQR is functionally compatible with the TPS23881B1RTQR. Both parts share identical electrical specifications and pinouts, differing primarily in packaging handling or minor manufacturing lot variations.