TPS2377D-1

Overview

The TPS2377D-1 is a Powered Device (PD) controller compliant with the IEEE 802.3af standard for Power over Ethernet applications. It operates within a supply voltage range of 0 V to 57 V and supports a maximum output power of 12.95 W. The device features a current limit of 405 mA and a maximum on-resistance of 1 Ohm. Designed for surface-mount installation in an SOIC-8 package, it functions reliably across a temperature range of -40°C to +85°C. The typical operating supply current is 240 uA.

Feature Summary

• Complies with IEEE 802.3af standards for Powered Devices
• Integrated high-side power switch with low on-resistance
• Supports wide input voltage operation up to 57 V
• Includes built-in protection mechanisms for robust system design

Applications

• IEEE 802.3af Powered Device implementations
• Power over Ethernet LAN infrastructure components
• Network endpoint devices requiring integrated PD control

Procurement Notes

Verify the specific suffix 'D-1' against the official Texas Instruments datasheet to confirm pinout and functional equivalence. Ensure the component meets the required environmental specifications for the intended operating temperature range. Confirm RoHS compliance status through the manufacturer's documentation before integration into the final assembly process.

Selection Notes

Select this component when designing systems that require strict adherence to the IEEE 802.3af standard for power delivery over Ethernet cables. Consider the SOIC-8 package constraints and the 405 mA current limit when sizing downstream circuitry. Evaluate the thermal performance requirements given the 1 Ohm on-resistance at maximum load conditions.

Part Context

This part belongs to the TPS2377 series of PoE controllers manufactured by Texas Instruments. It serves as a core component for managing power reception in networked devices, distinguishing itself from generic switches by integrating classification and control logic specifically for IEEE 802.3af compliant power sourcing equipment interactions.

Replacement Considerations

Consult the official Texas Instruments comparison documents for verified alternative part numbers within the same product family or cross-compatible solutions. Do not assume functional interchangeability without verifying pinout compatibility and electrical parameter alignment.