TPS23758RJJR

Overview

The TPS23758RJJR is a Texas Instruments IEEE 802.3at PoE Powered Device controller integrating a no-opto sync flyback DC-DC converter. It operates within a 0V to 57V input range and supports up to 25.5W output power. The device features a maximum on-resistance of 1.28 Ohms and a current limit of 405 mA. It functions across an extended temperature range from -40°C to +125°C with a typical quiescent current of 300 µA. Packaged in a VSON-23 surface-mount format, it enables compact designs for high-efficiency power delivery applications.

Feature Summary

• Integrates IEEE 802.3at compliant PoE interface with synchronous no-opto flyback DC-DC conversion
• Supports wide input voltage operation suitable for Class 4 powered devices
• Eliminates the need for optocouplers to reduce component count and improve reliability
• Includes thermal shutdown protection for robust operation under fault conditions

Applications

• High-power IP cameras and PTZ systems
• Wireless access points requiring enhanced power budgets
• Industrial IoT gateways and edge computing nodes
• Smart building automation controllers

Procurement Notes

Verify that the specific suffix 'RJJR' corresponds to the tape-and-reel packaging configuration required for automated assembly processes. Confirm compliance with RoHS directives and moisture sensitivity levels prior to soldering. Ensure the ordering quantity aligns with standard reel sizes to avoid cut-tape premiums. Cross-reference the manufacturer part number against official distributor catalogs to validate authenticity and traceability.

Selection Notes

Select this component when designing systems requiring IEEE 802.3at power budgets exceeding standard 802.3af limits. It is optimal for applications demanding high efficiency without the complexity of isolated feedback loops. Consider the VSON-23 package size constraints and thermal dissipation requirements during layout. Evaluate compatibility with external passive components for flyback transformer design to meet specific output voltage and current specifications.

Part Context

This device belongs to the TPS2375x series of PoE PD controllers from Texas Instruments. It complements other variants like the TPS23755 by offering specific integration levels for different power classes. The series focuses on simplifying power architecture in networked devices by combining interface logic and power conversion into a single monolithic solution.

Replacement Considerations

The TPS23758RJJT serves as a direct alternative differing primarily in packaging type rather than electrical function. Designers should verify pinout compatibility and thermal performance characteristics when substituting between reel and cut-tape variants.