TPS23755RJJT

Overview

The TPS23755RJJT is a Powered Device (PD) controller compliant with IEEE 802.3at PoE standards, designed for use in LAN applications. It integrates a power switch and DC/DC controller to support no-opto flyback topologies. The device operates within a supply voltage range of 0 V to 57 V and features a maximum on-resistance of 1.28 Ohms. It supports a maximum output power of 13 W with a current limit of 405 mA. The component functions reliably across an extended temperature range from -40°C to +125°C and utilizes a VSON-23 surface-mount package.

Feature Summary

• Complies with IEEE 802.3at Type 2 PoE standards for powered devices
• Integrates primary-side adapter priority and second gate drive capabilities
• Supports no-opto flyback converter architectures for efficient power conversion
• Includes thermal shutdown protection for enhanced operational safety

Applications

• IEEE 802.3at Powered Device implementations
• LAN infrastructure equipment requiring PoE input
• No-opto flyback power supply designs
• Industrial networking hardware operating in extreme temperatures

Procurement Notes

Verify the specific suffix RJJT against the manufacturer's official datasheet to confirm the exact tape-and-reel quantity and moisture sensitivity level. Ensure the ordering documentation matches the VSON-23 package designation. Cross-reference the part number with Texas Instruments' latest release notes to confirm active status and any potential obsolescence notices before finalizing procurement plans.

Selection Notes

Select this component when designing systems that require strict adherence to IEEE 802.3at Type 2 power budgets up to 13 W. It is suitable for applications demanding operation at high ambient temperatures up to 125°C. Engineers should consider the VSON-23 footprint constraints and the requirement for no-opto flyback topology compatibility during the schematic capture phase.

Part Context

This device belongs to the TPS23755 series of PoE interface and DC/DC controllers from Texas Instruments. The series is engineered to simplify the design of powered devices by integrating control logic and power switching elements. It targets modern network infrastructure where space efficiency and thermal performance are critical requirements for reliable long-term operation.

Replacement Considerations

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