Key Selection Information
| Selection Parameter | Confirmed Information |
|---|---|
| Device type | Autonomous USB Type-C port controller |
| Type-C roles | Source, sink and dual-role port |
| Accessory support | Yes |
| Dead-battery support | Yes |
| SuperSpeed switch control | Dedicated SS_SW output |
| Supply range | 3.0 V to 5.5 V |
| Standby current | 7 µA maximum |
| Disable current | 2 µA maximum |
| Package | 10-lead TMLP/X2QFN, 1.6 mm × 1.2 mm |
Product Overview
FUSB301TMX is a compact onsemi USB Type-C controller that can autonomously manage CC-pin attachment and role detection without requiring the application processor to execute the Type-C state machine continuously. It supports source, sink and dual-role operation, accessory detection and dead-battery sink behavior.
A dedicated SuperSpeed-switch control output can steer an external USB 3.x data switch according to cable orientation. That makes the FUSB301 useful when Type-C connection management is required but USB SuperSpeed routing remains in a separate analog switch.

Technical Specifications
| Parameter | Confirmed Information |
|---|---|
| VDD | 3.0 V to 5.5 V |
| Type-C support | USB Type-C Rev. 1.0 / 1.1 family implementation |
| Port modes | DFP, UFP, DRP |
| Try modes | Try.SNK and Try.SRC capable |
| Dead-battery behavior | Sink support with no applied device power |
| Processor interface | I²C plus interrupt/control signals |
| SS switch control | Integrated orientation-control output |
| HBM ESD | 2 kV |
| Package | 10-lead ultra-thin TMLP, approximately 1.6 × 1.2 mm |
Type-C Integration Considerations
FUSB301 manages the CC logic; it does not replace the separate power-path, protection or SuperSpeed differential switch required by the complete connector design. VBUS switching and USB 3.x lane routing should therefore be selected around the required power and data capability.
Manufacturer Resource
Quality & Verification Support
Exact TMX order code, 10-lead package, marking, lot/date information and reel traceability can be reviewed before shipment.
Request a Quote
Request FUSB301TMX exactly and include quantity, date-code and traceability requirements.




