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onsemi FUSB307BMPX
- Part No.:
- FUSB307BMPX
- Manufacturer:
- onsemi
- Category:
- Controllers
- Package:
- 16-WFQFN Exposed Pad
- Datasheet:
-
FUSB307BMPX.pdf
- Description:
- IC USB CONTROLLER I2C 16WQFN
- Quantity:
- Payment:
- Shipping:
Inventory:8,546
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Product details
Overview
FUSB307BMPX from onsemi is a USB Type-C Port Controller (TCPC) with integrated USB Power Delivery (PD) Rev 3.0 Ver. 1.1 support, compliant with USB Type-C Rev 1.3 and USB-PD Interface Spec Rev 1.0. It provides autonomous BMC PD packet handling, 10-bit VBUS ADC, dual-role port (DRP) toggling, and integrated 3 W-capable VCONN switching for full-featured cables. Used in mobile computing docks and laptop USB-C ports for reliable PD contract negotiation and orientation detection.
For engineers reviewing the FUSB307BMPX datasheet, pinout, applications, or equivalent options, this device delivers verified dead-battery operation, automatic GoodCRC response, sink/source load switch control (SNK/SRC), I²C-address programmability (4 options), and CC-line debounce per USB Type-C specification - all in a compact 3×3 mm QFN16 package.
Technical Context
The FUSB307BMPX implements a dedicated BMC physical layer with integrated Tx/Rx state machines, CRC32 calculation, 4B5B encoding/decoding, and autonomous Hard Reset/Cable Reset signaling. Its Type-C detection logic supports both manual attach/detach sensing and automatic DRP toggling with configurable Rp/Rd pull-up/down resistors.
Power management includes VBUS source/sink control via SNK/SRC CMOS outputs, programmable VCONN OCP (210.5 mA default or user-defined), LDO output (3.3 V) for TCPM power during dead-battery conditions, and VBUS monitoring via 10-bit ADC with threshold reporting in PWRSTAT registers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| USB-PD Compliance | USB-PD Rev 3.0 Ver. 1.1 and USB-PD Interface Spec Rev 1.0 - enables standardized communication with TCPM and full PD feature set including Fast Role Swap. |
| Type-C Compliance | USB Type-C Rev 1.3 - supports orientation detection, debug accessory auto-detect, and CC-line BMC signaling with tTCPCFilter debouncing. |
| VBUS Monitoring | Integrated 10-bit ADC - provides precise VBUS voltage measurement for safety-critical source/sink validation and discharge control. |
| VCONN Drive | Integrated CCx-to-VCONN switch rated for 3 W - powers USB3.1 full-featured cables and active adapters without external regulators. |
| I²C Interface | Fast Mode Plus (1 MHz) slave interface with 4 selectable addresses - enables multi-port systems to share I²C bus without address conflict. |
| Operating Temp | −40°C to +85°C - qualified for industrial and consumer portable applications including laptops and docking stations. |
| Package | 16-pin WQFN (3 mm × 3 mm, 0.5 mm pitch, Case 510BS) - surface-mount compatible with high-density PCB layouts and automated assembly. |
Pinout & Package
Package: 16-pin Wettable Flank QFN (WQFN16), 3 mm × 3 mm, 0.5 mm pitch, exposed thermal pad (Case 510BS).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CC1 / CC2 | Type-C Configuration Channel I/O | Dual bidirectional BMC signaling pins for cable orientation detection, attach/detach sensing, and PD message exchange over CC line. |
| VCONN | VCONN Power Switch Output | Drives regulated VCONN (up to 3 W) to correct CC pin based on ORIENT status - powers active cables and adapters. |
| SNK / SRC | VBUS Load Switch Control Outputs | CMOS-active-high signals controlling external NMOS/PMOS switches for VBUS sink (SNK) or source (SRC) path enable/disable. |
| INT_N | Interrupt Output | Open-drain active-low interrupt signaling event occurrence (e.g., CC status change, RX packet received, VBUS transition) to TCPM. |
| SCL1 / SDA1 | I²C Slave Interface | Standard I²C clock/data pair supporting Fast Mode Plus - used for register read/write access by TCPM or host microcontroller. |
| GPIO1 / GPIO2 | Programmable General-Purpose I/O | Configurable as input, CMOS output, or open-drain output - supports custom system-level signaling or status indication. |
| LDO | 3.3 V Regulated Output | On-chip LDO providing stable 3.3 V supply to TCPM during dead-battery operation - eliminates need for external bias rail. |
| ORIENT | Orientation Detection Output | 3-state CMOS output indicating cable plug orientation (CC1 vs CC2 active) - used by TCPM to configure VCONN routing and data lane mapping. |
Key Features
| Feature | Design Value |
|---|---|
| Dead Battery Operation | Powered directly from VBUS to deliver 3.3 V LDO output - enables TCPM boot and PD contract initiation before system main power is available. |
| Autonomous GoodCRC Response | Hardware-accelerated CRC32 calculation and packet transmission - offloads time-critical PD ACK timing from TCPM firmware. |
| Fast Role Swap Support | Hardware-managed role transition sequence per USB-PD Rev 3.0 - reduces software latency and ensures compliance with tFRS timing requirements. |
| Extended Data Messages (Chunked) | Supports segmented PD message transmission/reception - enables transfer of large structured objects (e.g., DisplayPort Alt Mode descriptors) within PD framework. |
| VBUS Discharge Control | Automatic sink/source discharge after disconnect - meets USB Type-C specification tDischarge limits (≤ 1 s for 20 V) without external circuitry. |
Applications
| Laptop USB-C Docking Station | Smartphone Charging Port |
|---|---|
Use Scenario: Dual-port laptop dock negotiating 60 W PD power delivery while simultaneously supporting DisplayPort Alt Mode and USB 3.1 Gen 1 data. IC Role / Device Role / Timing Role: TCPC managing CC-line BMC signaling, VBUS sourcing/sinking, VCONN switching, and orientation-aware DP lane routing. Use Value: Enables single-cable docking with guaranteed PD contract reliability, automatic cable orientation handling, and seamless role swap during host-peripheral reconfiguration. |
Use Scenario: Smartphone acting as UFP (Upstream Facing Port) accepting up to 27 W fast charging from wall adapter using USB-PD Rev 3.0 PPS. IC Role / Device Role / Timing Role: TCPC detecting attach/detach, measuring VBUS with 10-bit ADC, controlling internal sink FETs, and responding to PD messages with hardware GoodCRC. Use Value: Ensures safe, standards-compliant charging under variable input conditions and supports Programmable Power Supply negotiation without CPU intervention. |
| Automotive In-Car USB-C Hub | Rechargeable Speaker Dock |
Use Scenario: In-vehicle infotainment system providing USB-C power and data to mobile devices across temperature range −40°C to +105°C (FUSB307BVMPX variant). IC Role / Device Role / Timing Role: TCPC performing robust CC-line detection under EMI-prone automotive environment, supporting debug accessory detection for service mode. Use Value: Delivers certified USB-C functionality in harsh environments with extended temperature qualification and autonomous fault recovery (e.g., Hard Reset on communication error). |
Use Scenario: Portable Bluetooth speaker with USB-C input supporting simultaneous charging and audio streaming via USB Audio Class 2.0. IC Role / Device Role / Timing Role: TCPC managing dual-role port behavior, enabling VBUS sink during charging and VBUS source during OTG data transfer. Use Value: Allows seamless transition between power sink and source modes using Fast Role Swap - no manual port re-plug required for OTG use cases. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar USB Type-C port controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STUSB4500QTR | Single-port TCPC with USB-PD Rev 2.0 only; no VCONN switch; requires external VBUS monitor; 20-pin QFN. | Limited to basic PD 2.0 contracts; lacks chunked messaging and Fast Role Swap; suitable for cost-sensitive single-port chargers. | Select when PD 3.0 features (PPS, FR_SWAP) and integrated VCONN are not required - lower BOM count but reduced feature set. |
| TUSB7320RGET | USB 3.1 Gen 1 hub controller with embedded TCPC; supports only UFP role; no DRP capability; no VCONN drive. | Designed for downstream hub applications only; cannot act as DFP or DRP; no autonomous PD negotiation - relies on host stack. | Choose only for fixed-role USB hub designs where TCPC is secondary to data switching - not a functional replacement for FUSB307BMPX's full TCPC autonomy. |
Compared with STUSB4500QTR and TUSB7320RGET, the FUSB307BMPX uniquely integrates DRP toggling, VCONN switching, dead-battery LDO, and USB-PD Rev 3.0 hardware acceleration - making it the only option among the three capable of autonomous dual-role operation in space-constrained portable systems.
Availability
FUSB307BMPX is available at Aetrix Electronics and suitable for laptop docking stations, smartphone charging circuits, automotive USB-C hubs, and rechargeable speaker docks requiring stable component supply across industrial temperature ranges and long production lifecycles.
Supply support for FUSB307BMPX includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
onsemi is a global semiconductor manufacturer specializing in energy-efficient silicon solutions for automotive, industrial, cloud, and IoT applications - with leadership in USB-C, power management, and signal integrity technologies.
The FUSB307BMPX belongs to onsemi's USB Type-C Port Controller product line, designed specifically to offload USB-PD protocol handling from host processors and enable robust, standards-compliant dual-role USB-C implementations in portable and embedded systems.
FAQ
What is the primary function of the FUSB307BMPX in a USB-C system?
The FUSB307BMPX serves as a dedicated USB Type-C Port Controller (TCPC) that handles low-level USB-PD protocol tasks - including BMC signaling, GoodCRC generation, Hard Reset management, VBUS monitoring, and DRP toggling - thereby offloading these time-critical functions from the main processor or TCPM. This allows the FUSB307BMPX to operate autonomously during attach/detach events and PD negotiations, ensuring compliance with USB Type-C Rev 1.3 and USB-PD Rev 3.0 specifications.
Does the FUSB307BMPX support dead-battery operation, and how does it work?
Yes, the FUSB307BMPX supports dead-battery operation by drawing power directly from VBUS to activate its internal 3.3 V LDO, which then supplies power to the TCPM or host microcontroller. During this state, the FUSB307BMPX presents Rd pull-downs on CC1/CC2 to signal UFP presence, enabling the source to initiate VBUS. Once VDD rises above VDDGOOD, the device switches to VDD power and bypasses the LDO - a sequence fully documented in the FUSB307BMPX datasheet Figure 5.
How many I²C addresses does the FUSB307BMPX support, and how are they selected?
The FUSB307BMPX supports four distinct I²C slave addresses, selected at power-up via the ORIENT/I2C_ADDR pin state (high/low) combined with SCL/SDA pin assignment (SCL1/SDA1 vs SCL1/SDA2). Table 3 in the official datasheet defines the exact mapping: addresses 0x50, 0x51, 0x52, and 0x53 are available - enabling multiple FUSB307BMPX devices on a shared I²C bus without address collision in multi-port systems.
What is the role of the SNK and SRC pins on the FUSB307BMPX?
The SNK and SRC pins on the FUSB307BMPX are CMOS outputs that actively control external VBUS load switches - SNK enables the sink path (e.g., turning on an NMOS FET to connect battery charger), while SRC enables the source path (e.g., activating a buck-boost regulator for VBUS output). Both are active-high signals synchronized with PD state machine transitions and include built-in discharge control to meet USB-C tDischarge requirements.
Can the FUSB307BMPX drive VCONN for full-featured USB-C cables, and what is its capability?
Yes, the FUSB307BMPX integrates a CCx-to-VCONN switch capable of delivering up to 3 W (e.g., 5 V @ 600 mA), meeting USB Type-C specification requirements for powering full-featured cables and active adapters. VCONN current limit is programmable via the VCONN_OCP register, with a default setting of 210.5 mA; orientation-aware routing is controlled by the ORIENT pin and TCPC_CTRL.ORIENT bits to ensure correct CC pin selection.
FUSB307BMPX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- 16-WFQFN Exposed Pad
- Programmable:
- Not Verified
- Protocol:
- USB
- Function:
- Controller
- Interface:
- I2C
- Standards:
- USB 3.0
- Voltage - Supply:
- -
- Current - Supply:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Supplier Device Package:
- 16-WQFN (3x3)
- Grade:
- -
- Qualification:
- -
FUSB307BMPX FAQ
1.How can I place an order for FUSB307BMPX through Aetrix?
Please submit a Request for Quotation (RFQ) for FUSB307BMPX on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for FUSB307BMPX reliable?
The price and inventory of FUSB307BMPX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for FUSB307BMPX is usually 5 days.
3.What payment methods are accepted for FUSB307BMPX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for FUSB307BMPX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for FUSB307BMPX?
FUSB307BMPX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your FUSB307BMPX order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for FUSB307BMPX?
For technical support, including FUSB307BMPX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your FUSB307BMPX requirements.
6.How does Aetrix verify that FUSB307BMPX is sourced from the original manufacturer or authorized distributors?
All FUSB307BMPX products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that FUSB307BMPX meets industry standards.
7.What is the process for return or replacement of FUSB307BMPX?
All FUSB307BMPX units undergo pre-shipment inspection (PSI). If there is an issue with FUSB307BMPX, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The FUSB307BMPX part is unused and in its original packaging.
Return procedure for FUSB307BMPX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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