FUSB302BMPX - USB Type-C Controller with PD | onsemi
MPN: FUSB302BMPX β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0.62 | $0.62 |
| 10 | $0.56 | $5.60 |
| 100 | $0.48 | $48.00 |
| 500 | $0.44 | $220.00 |
| 1,000 | $0.42 | $420.00 |
FUSB302BMPX Overview
A USB Type-C controller is a bridge IC between a system embedded controller and the USB Type-C connector. It sits in the product hierarchy of interface ICs -> USB controllers -> USB Type-C/PD controllers, and is responsible for CC-line communication, role swap, and PD message exchange, enabling up to 100 W of power delivery over the USB-C cable without dedicated high-speed analog circuitry in the main SoC.
Key features of the FUSB302BMPX include full USB Type-C attach and orientation detection, an integrated BMC PD PHY enabling up to 100 W power and role swap, and support for the alternative interfaces of the Type-C specification. The device communicates with the host over an I2C interface and provides an interrupt output for event-driven operation, keeping host firmware overhead low.
Technically, the FUSB302B integrates the CC-line comparators, BMC transmit/receive physical layer, and digital protocol engine in a compact 2.5 x 2.5 mm MLP-14 footprint. Because the PD PHY is on-chip, designers avoid implementing time-critical BMC encoding in software, improving USB-IF compliance robustness. onsemi provides reference code for the FUSB302B for easy implementation across several embedded controller platforms.
Typical applications include USB-C power adapters and chargers, smartphones and tablets, notebooks and docking stations, power banks, and monitor/TV USB-C ports. Its small 2.5 x 2.5 mm MLP package suits space-constrained portable designs, while 100 W PD support covers laptop charging scenarios.
A key design consideration: the FUSB302BMPX defaults to SNK (sink) role, so source or DRP behavior must be programmed via the I2C register interface. CC-line ESD protection and correct Rp/Rd termination selection are also critical for reliable attach detection.
This page synthesizes distributor pricing, the verified onsemi drop-in replacement guidance for FUSB302MPX, and practical design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for FUSB302BMPX β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with FUSB302BMPX (same form factor and footprint) β differing in Package, Packaging, USB Standard.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
FUSB302MPX
β Drop-Inβ In Stock
Contact for price
View Datasheet βFUSB302B01MPX
β Drop-Inπ Reference alternative (not in catalog)
FUSB302BUCX
β Drop-Inπ Reference alternative (not in catalog)
FUSB302BMPX Specifications
| Product Type | Programmable USB Type-C Controller with PD |
| USB Standard | USB 3.1 (Type-C connector interface) |
| Power Delivery | USB PD via integrated BMC PHY, up to 100 W |
| Role Support | DRP / SRC / SNK (default SNK) |
| Package | 14-MLP (2.5 x 2.5 mm) |
| Mounting Type | Surface Mount |
| Host Interface | I2C with interrupt output |
| PD Protocol Layer | BMC physical layer integrated on-chip |
| Alternative Mode Support | Yes (Type-C alternative interfaces) |
| RoHS Status | Compliant |
| Packaging | Tape & Reel (MPX suffix) |
| Reference Code Availability | Yes (onsemi reference code for embedded controller platforms) |
FUSB302BMPX 14-mlp (2.5 x 2.5 mm) Pin Configuration Guide
Pin configuration for FUSB302BMPX (14-mlp (2.5 x 2.5 mm) package). Pin numbering, functions, and connection diagrams are defined in the manufacturer datasheet. Refer to it for the exact footprint and soldering guidelines.
No detailed pinout data available for FUSB302BMPX.
Refer to the datasheet for full pin configuration.
Typical Applications
FUSB302BMPX is suitable for 6 applications: USB-C Power Adapters and Chargers, Smartphones and Tablets, Laptops, Notebooks and Docking Stations, Power Banks, Monitors and TVs with USB-C Ports, Industrial and Embedded Systems with USB-C.
USB-C Power Adapters and Chargers
The FUSB302BMPX fits USB-C wall adapters and chargers because its integrated BMC PD physical layer supports up to 100 W of negotiated power without requiring the host MCU to implement time-critical PD encoding. In a typical adapter, the controller sits on the CC1/CC2 lines of the Type-C receptacle, negotiates PD contracts via I2C with the adapter MCU, and commands the feedback loop of the primary-side controller to step output voltage between 5 V, 9 V, 15 V, and 20 V. The DRP/SRC/SNK role flexibility lets one firmware image cover adapters (SRC) and multi-port chargers. Because the default role is SNK, adapter firmware must set source mode at startup, a one-register operation documented in the onsemi datasheet.
Recommended
Smartphones and Tablets
Smartphone and tablet designs benefit from the FUSB302BMPX's extremely small 2.5 x 2.5 mm 14-MLP footprint, which conserves board area around the densely packed Type-C connector. The device performs attach and cable-orientation detection in hardware and relays events to the application processor over I2C with an interrupt line, minimizing polling overhead and standby current - important for battery-operated devices. Its integrated BMC PD PHY enables fast-charge PD contracts with aftermarket chargers up to 100 W, while the default SNK role matches the sink behavior a phone requires out of the box. onsemi reference code for embedded controller platforms shortens firmware bring-up in Android-class power management stacks.
Recommended
Laptops, Notebooks and Docking Stations
In notebooks and docking stations, the FUSB302BMPX acts as the Type-C port controller that negotiates PD contracts up to 100 W for laptop charging and manages role swap when a dock alternates between powering the laptop and receiving video/data. The BMC PD block supports the alternative interfaces of the Type-C specification, which is essential for docks that combine DisplayPort Alt Mode signaling with power delivery on the same connector. The controller's hardware orientation detection tells the SoC which CC line carries PD traffic, avoiding software timing hazards. Multiple FUSB302BMPX instances can be hung on one I2C bus with distinct addresses, simplifying multi-port dock designs.
Recommended
Power Banks
Power banks require a controller that can act as a sink while being charged and as a source while discharging, which maps directly onto the FUSB302BMPX's DRP (dual role port) capability. The integrated BMC PD PHY negotiates input contracts up to 100 W for fast recharging of the bank, then negotiates output contracts for fast charging of phones and laptops. The 2.5 x 2.5 mm MLP-14 package fits the thin PCBs typical of power banks, and the I2C-plus-interrupt interface lets a single low-cost fuel-gauge MCU manage the PD state machine efficiently. Designers should program role policy so the device toggles DRP until attach, per the Type-C specification state machine.
Recommended
Monitors and TVs with USB-C Ports
Monitors and televisions increasingly expose USB-C ports that must deliver power to connected phones and laptops while carrying DisplayPort Alt Mode video. The FUSB302BMPX supports the alternative interfaces of the Type-C specification through its BMC PD block, so it can advertise source capabilities (for example 15 V or 20 V profiles) and negotiate the appropriate contract while the SoC handles Alt Mode lane configuration. Hardware attach and orientation detection accelerates hot-plug response, and the 14-MLP package fits the tight connector area of monitor mainboards. The SNK-default configuration is overridden in firmware to source mode for display applications.
Recommended
Industrial and Embedded Systems with USB-C
Industrial embedded systems - HMI panels, gateways, and single-board computers - are migrating to USB-C connectors and need PD negotiation to safely draw or source higher power. The FUSB302BMPX provides the Type-C and PD layer while the industrial MCU (often an automotive-qualified part) retains full control through the I2C interface, keeping system behavior deterministic and auditable. onsemi supplies reference code for several embedded controller platforms, reducing integration risk. The part's small footprint and surface-mount 14-MLP package support standard SMT assembly, and its role as a front-end controller means no high-speed analog design burden is placed on the industrial firmware team.
Recommended
Recommended Products Summary
Engineering reference data for FUSB302BMPX β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | FUSB302MPX | FUSB302B01MPX | FUSB302BUCX |
|---|---|---|---|---|
| Package | 14-MLP (2.5 x 2.5 mm) | 14-MLP (2.5 x 2.5 mm) - same | 14-MLP (2.5 x 2.5 mm) - same | 14-MLP (2.5 x 2.5 mm) - same |
| Brand | onsemi | onsemi | onsemi | onsemi |
| USB Type-C + PD Support | Yes (BMC PD PHY, up to 100 W) | Yes (BMC PD PHY, up to 100 W) | Yes (BMC PD PHY, up to 100 W) | Yes (BMC PD PHY, up to 100 W) |
| Role Support | DRP / SRC / SNK (default SNK) | DRP / SRC / SNK | DRP / SRC / SNK (default SNK) | DRP / SRC / SNK (default SNK) |
| USB-C Spec Compliance Alignment | Updated to latest USB-C spec releases (B revision) | Original FUSB302 (earlier spec baseline) | B revision (updated) | B revision (updated) |
| Drop-in Compatibility Direction | Drop-in replacement for FUSB302MPX (per onsemi) | Can be replaced by FUSB302BMPX without software change | Same footprint, verify variant suffix | Same footprint, verify variant suffix |
| Host Interface | I2C + interrupt | I2C + interrupt | I2C + interrupt | I2C + interrupt |
| Lifecycle Recommendation | Recommended for new designs | Legacy - FUSB302B recommended instead | Active variant | Active variant |
Key Differentiators
- Updated USB-C specification compliance (vs FUSB302MPX)
- Integrated BMC PD physical layer (vs Software-PD implementations)
- Compact 2.5 x 2.5 mm 14-MLP footprint (vs Larger QFN Type-C controllers)
Design Notes
The FUSB302BMPX defaults to SNK (sink) role out of reset. Designs requiring source behavior (adapters, docks, monitors) must configure role mode via the I2C register interface during initialization, otherwise the port will never advertise Rp termination and will fail to attach sink devices. onsemi's reference code includes this initialization sequence - port it verbatim rather than writing register writes from scratch to avoid missing required sequence steps.
Place the FUSB302BMPX as close to the Type-C receptacle CC pins as practical, keeping CC1/CC2 traces short and matched. The 14-MLP (2.5 x 2.5 mm) package has a fine 0.5 mm-class pitch; verify the land pattern against the onsemi datasheet dimensions rather than copying a generic MLP-14 pattern. Provide solid ground return under the IC and place the VDD decoupling capacitor within 1-2 mm of the supply pin for clean BMC signaling.
While the FUSB302BMPX negotiates PD contracts up to 100 W, the controller itself only handles CC-line signaling - the high-current VBUS path must be routed through a separate load switch and protection circuit sized for the negotiated contract. Estimated: a 100 W / 20 V contract implies 5 A on VBUS, so the VBUS switch and TVS (for example SMBJ-class devices) must be rated well above 5 A continuous and appropriate clamping voltage.
Compliance Information
RoHS compliant per distributor listings; lead-free surface-mount device. REACH, halogen-free, and conflict-minerals status should be confirmed against the onsemi product page certificate of conformance.
