TPS23882RTQR

Overview

The TPS23882RTQR is an 8-channel Power Sourcing Equipment (PSE) controller designed for IEEE 802.3bt Type-3 applications using two pairs of Ethernet cabling. It operates within a supply voltage range of 3.3 V and supports an operating temperature range from -40 °C to +125 °C. The device integrates a 200 mΩ current sense resistor and features programmable SRAM for firmware updates via I²C communication. It provides precise current monitoring with ±2% accuracy and includes protection against surges and short circuits.

Feature Summary

• Supports autonomous power delivery modes without microcontroller intervention
• Enables field firmware upgrades through SRAM programmability
• Provides continuous per-port current monitoring with high precision

Applications

• Network video recorder systems
• Small business network switches
• Campus branch switch deployments

Procurement Notes

Verify the specific suffix RTQR corresponds to the reel packaging configuration required for your assembly line. Confirm that the thermal management design accommodates the maximum junction temperature limits specified in the datasheet. Ensure I²C bus pull-up resistors are selected according to the electrical characteristics to maintain signal integrity during operation.

Selection Notes

Select this component when designing Type-3 PoE systems requiring eight independent channels with centralized control. It is suitable for applications needing flexible power allocation across ports and robust diagnostic capabilities. Consider the pin-to-pin compatibility with previous generations if migrating existing designs to support higher power standards or enhanced monitoring features.

Part Context

This controller belongs to the Texas Instruments TPS2388x family of PoE PSE solutions. It represents an evolution in power-over-Ethernet technology, offering improved efficiency and reduced external component count compared to earlier iterations. The integration of internal sensing elements simplifies the overall system architecture while maintaining compliance with evolving industry standards.

Replacement Considerations

The TPS23882B serves as a related variant within the same product family. Verify functional equivalence regarding autonomous mode availability and interface compatibility before substitution.