TPS25821DSST

Specialized Overview

The TPS25821DSST is a USB Type-C source controller and power switch manufactured by Texas Instruments. It complies with the USB Type-C Specification Revision 2.0 and operates within a supply voltage range of 4.5 V to 5.5 V. The device supports a maximum continuous output current of 1.5 A and features an operating quiescent current of 1.5 A in active states. It is housed in a WSON-12 package suitable for surface mount technology. The component functions as a downstream facing port (DFP) controller, managing VBUS delivery based on CC pin monitoring. It operates reliably across a temperature range from -40°C to +125°C.

Specialized Feature Summary

• Integrates USB Type-C specification compliance with built-in power switching capabilities for source applications.
• Monitors Configuration Channel pins to dynamically manage VBUS power delivery and connection status.
• Provides overcurrent protection and thermal management to safeguard connected loads and the host system.

Specialized Applications

• Designs requiring dedicated USB Type-C source ports with fixed voltage output.
• Portable electronic devices needing integrated power path management and protocol handling.
• Charging accessories that require strict adherence to USB Type-C Revision 2.0 standards.

Specialized Procurement Notes

Verify the specific ordering suffix against the manufacturer's latest datasheet to ensure correct packaging and tape-and-reel specifications. Confirm RoHS compliance status directly with the supplier documentation prior to procurement. Ensure the WSON-12 footprint matches the design layout requirements. Cross-reference the part number with official distributor catalogs to validate authenticity and avoid counterfeit components.

Specialized Selection Notes

Select this component when a unified solution for USB Type-C negotiation and power switching is required. It is suitable for designs limited to 5V operation with currents up to 1.5A. Consider the WSON-12 package size constraints during PCB layout. Evaluate thermal dissipation needs given the operating temperature range and current ratings. Compare against simpler switches if complex CC monitoring is not necessary for the application.

Specialized Part Context

This part belongs to the TPS25821 series of USB Type-C controllers. It differs from the TPS25820 primarily by supporting USB Type-C Specification Revision 2.0, whereas the TPS25820 supports Revision 1.1. Both share similar electrical characteristics but differ in protocol compliance levels. The DSST suffix indicates the specific WSON-12 package variant available for surface mount assembly.

Specialized Replacement Considerations

The TPS25820DSST serves as a compatible alternative for designs adhering to USB Type-C Revision 1.1. Verify that the target application does not require features specific to Revision 2.0 before substituting. Ensure pin compatibility and software configuration remain consistent between the two variants.