UPD350D/Q8X

Controllers Overview

The UPD350D/Q8X is a highly integrated USB Type-C Power Delivery 3.0 port controller in a 28-QFN package. It features an SPI interface for communication with companion processors and supports Dual Role Port (DRP) operation with Fast Role Swap. The device integrates analog components including VCONN FETs, current/voltage sense circuits, and a power switch for dead battery support. Operating voltage ranges from 1.62V to 3.47V, with an industrial temperature range of -40°C to +85°C.

Controllers Feature Summary

• Integrated USB Power Delivery 3.0 MAC with automatic packet framing and error handling
• Supports USB Type-C Alternate Modes including DisplayPort
• Built-in power switch enables dead battery connection detection without external processor intervention

Controllers Applications

• Notebook Computers
• Docking Stations
• Multi-port Chargers

Controllers Procurement Notes

Verify the specific suffix 'D' confirms the SPI interface variant rather than I2C. Confirm the 'Q8X' suffix matches the required industrial temperature grade (-40°C to +85°C). Check for end-of-life status or discontinuation notices as this component family may have limited availability.

Controllers Selection Notes

Select the UPD350D variant specifically when an SPI interface is required for host communication, distinguishing it from the I2C-based UPD350A/C models. Ensure the design accommodates the 28-QFN package footprint and utilizes the integrated GPIOs for standalone mode control if no companion MCU is present.

Controllers Part Context

This component belongs to the UPD350 family of USB Type-C controllers. The UPD350D is the specific member designed with an SPI slave controller, whereas other variants like UPD350A utilize an I2C interface. All members share the same physical package and core PD MAC functionality.

Controllers Replacement Considerations

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