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onsemi FUSB302B10MPX
- Part No.:
- FUSB302B10MPX
- Manufacturer:
- onsemi
- Category:
- Controllers
- Package:
- 14-WFQFN Exposed Pad
- Datasheet:
-
FUSB302B10MPX.pdf
- Description:
- IC CONTROLLER USB TYPE C 14MLP
- Quantity:
- Payment:
- Shipping:
Inventory:3,068
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Product details
Overview
FUSB302B10MPX from onsemi is a USB Type-C port controller IC implementing BMC physical layer, CC detection, DRP toggle logic, VCONN switching, and USB Power Delivery 2.0 protocol engine. It supports 100 W power delivery, operates from 2.7 V to 5.5 V VDD, consumes 25 µA in toggle standby mode, and integrates 48-byte Tx/Rx FIFOs for PD packet handling. It is used in smartphones, laptops, and portable chargers requiring dual-role USB-C connectivity.
For engineers reviewing the FUSB302B10MPX datasheet, pinout, applications, or equivalent options, key selection considerations include its 14-lead MLP package (2.5 mm × 2.5 mm), I²C slave address 0x48, VCONN current capability up to 560 mA, BMC timing compliance per USB PD 2.0, and support for Ra/Rd/USB audio accessory detection via integrated DAC and comparators.
Technical Context
The FUSB302B10MPX implements a full BMC physical layer with 4B5B encoding/decoding, CRC32 generation and checking, and automatic GoodCRC response when AUTO_CRC = 1. Its DRP toggle logic uses internal timers tTOG1 (45 ms typ) and tTOG2 (30 ms typ) to sequence SNK-to-SRC role transitions without host intervention.
It integrates dual-channel CC measurement with programmable MDAC (42 mV/step for CC, 420 mV/step for VBUS), configurable pull-up/pull-down resistors (5.1 kΩ device Rd, 10–330 µA SRC currents), and VCONN switch with OCP (800 mA typ) and thermal shutdown at 145 °C. All register access occurs over I²C at up to 1 MHz (Fast Mode Plus).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDD Supply Range | 2.7 V to 5.5 V - supports direct connection to system 3.3 V or 5 V rails without LDO |
| CC Detection Accuracy | Rd = 5.1 kΩ ±10% - enables reliable USB-C plug orientation and sink/source identification |
| VCONN Output Current | 560 mA max - powers full-featured USB-C cables and active adapters compliant with USB 3.1 spec |
| BMC Timing Compliance | tRISE/tFALL ≤ 300 ns, UI = 3.03–3.70 µs - meets USB PD 2.0 physical layer requirements |
| I²C Interface Speed | Up to 1000 kHz - allows fast configuration and status polling without CPU overhead |
| Power Consumption (Standby) | 25 µA typ at TOGGLE = 1 - enables low-power always-on USB-C detection in battery-powered devices |
| Operating Temperature | −40 °C to +85 °C - qualified for consumer and industrial portable electronics environments |
Pinout & Package
Package: 14-lead MLP (2.5 mm × 2.5 mm, 0.5 mm pitch), case 510BR, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CC1 / CC2 | Configuration Channel I/O | Bi-directional BMC data path for plug detection, orientation sensing, and PD communication |
| VCONN | VCONN Power Switch Output | Regulated output switched to CC1 or CC2 to power cable electronics; includes OCP and thermal shutdown |
| VBUS | VBUS Sense Input | OVP-protected input for attach/detach detection and VBUSOK interrupt generation at ≥4.0 V |
| VDD | Core Power Supply | Main supply for digital logic, BMC PHY, and internal regulators; decoupling required per layout guidelines |
| GND | Ground Reference | Dual GND pins (pins 8 & 9) provide low-impedance return path and thermal dissipation |
| INT_N | Interrupt Output | Active-low open-drain signal indicating register events (e.g., I_VBUSOK, I_TOGDONE, I_BC_LVL) |
| SCL / SDA | I²C Interface | Standard-mode/fast-mode-plus compatible bus for host configuration and status readback |
Key Features
| Feature | Design Value |
|---|---|
| Integrated BMC PHY | Full USB PD 2.0-compliant physical layer with 4B5B, CRC32, and automatic GoodCRC response |
| DRP Auto-Toggle | Hardware-controlled SNK→SRC transition with tTOG1/tTOG2 timing; no firmware polling required |
| VCONN Switch with Protection | 560 mA rated switch with over-current protection (600–1000 mA), thermal shutdown (145 °C), and soft-start |
| Programmable CC Measurement | 6-bit MDAC (42 mV/step) and comparator enable precise Ra/Rd/USB audio accessory detection |
| USB PD Protocol Engine | 48-byte Tx FIFO and 80-byte Rx FIFO with interrupt-driven packet handling and retry management |
| I²C Slave Address | Fixed address 0x48 (7-bit) - eliminates address conflict risk in multi-device systems |
Applications
| Smartphone Charging Port | Laptop Docking Station |
|---|---|
Use Scenario: Mobile phone detects USB-C charger orientation, negotiates 100 W PD contract, and enables VCONN for active cable support. IC Role / Device Role / Timing Role: FUSB302B10MPX acts as DRP controller managing CC line state, BMC signaling, and VCONN power delivery during plug insertion and PD handshake. Use Value: Enables reversible plug insertion, rapid 5 V/20 A PD negotiation, and compatibility with USB-IF certified full-featured cables. | Use Scenario: Docking station identifies attached laptop (SRC) or peripheral (SNK), configures USB 3.1 switch routing, and supplies VCONN to connected accessories. IC Role / Device Role / Timing Role: FUSB302B10MPX serves as Type-C port manager detecting role, enabling VCONN on correct CC pin, and triggering I²C-based switch control within 45 ms of attach. Use Value: Eliminates manual port configuration, reduces host firmware complexity, and ensures robust accessory detection including debug/audio adapters. |
| Portable Power Bank | USB-C Monitor Hub |
Use Scenario: Power bank switches between charging (SNK) and discharging (SRC) modes based on cable attachment, while maintaining PD contract continuity. IC Role / Device Role / Timing Role: FUSB302B10MPX executes hardware DRP toggle with tTOG1/tTOG2 timing, manages pull-up/down states, and signals role change via INT_N to host MCU. Use Value: Achieves seamless bidirectional power flow without host intervention, supporting USB-C 2.0 and PD 2.0 feature sets in compact form factor. | Use Scenario: Monitor hub detects USB-C video source (e.g., laptop) and activates DisplayPort Alt Mode negotiation while powering connected USB peripherals. IC Role / Device Role / Timing Role: FUSB302B10MPX performs initial CC detection, triggers VCONN for active cable, and asserts I_VBUSOK to enable downstream power delivery and DP Alt Mode handshaking. Use Value: Ensures reliable plug-and-play operation with certified cables, prevents misconfiguration due to incorrect orientation, and supports simultaneous video/data/power delivery. |
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 | Integrated USB PD 3.0 controller with programmable PDOs; requires external VCONN FET; 20-pin QFN package | Supports extended power rules (EPR), PPS, and variable voltage contracts beyond PD 2.0 baseline | Select when PD 3.0 features like PPS or EPR are required; FUSB302B10MPX remains optimal for cost-sensitive PD 2.0 implementations |
| TUSB320LAIRTVR | USB Type-C port controller only (no PD protocol engine); supports BMC but relies on host MCU for PD messaging | Lacks embedded PD stack and FIFOs - requires full software PD implementation on host processor | Choose when system already has PD firmware stack and minimal BOM cost is critical; FUSB302B10MPX reduces host CPU load and accelerates time-to-market |
Compared with STUSB4500QTR and TUSB320LAIRTVR, the FUSB302B10MPX delivers a balanced solution: it embeds a complete PD 2.0 protocol engine with hardware BMC timing, supports VCONN switching natively, and fits in a compact 2.5 mm × 2.5 mm MLP package - making it ideal for space-constrained, firmware-light designs needing robust USB-C connectivity.
Availability
FUSB302B10MPX is available at Aetrix Electronics and suitable for smartphone charging ports, laptop docking stations, and portable power banks requiring stable component supply across high-volume production cycles.
Supply support for FUSB302B10MPX 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 leader delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The FUSB302B product line is designed specifically for USB Type-C port control, integrating BMC PHY, CC detection, DRP logic, and PD 2.0 protocol handling to simplify USB-C adoption in portable and embedded systems.
FAQ
What is the I²C slave address of the FUSB302B10MPX?
The FUSB302B10MPX has a fixed 7-bit I²C slave address of 0x48, as defined in Table 15 of the datasheet. This address is unique to the FUSB302B10MPX variant and differs from other members of the FUSB302B family (e.g., FUSB302BMPX = 0x42, FUSB302B01MPX = 0x46). The address is hard-coded and cannot be modified via pins or registers, ensuring predictable bus behavior in multi-device systems.
Does the FUSB302B10MPX support USB Power Delivery 3.0?
No, the FUSB302B10MPX implements USB Power Delivery specification version 2.0 only. It does not support PD 3.0 features such as Programmable Power Supply (PPS), Extended Power Range (EPR), or Fast Role Swap (FRS). Its protocol engine handles SOP, SOP', SOP'', and Hard/Soft Reset messages per PD 2.0, with CRC32 and 4B5B encoding fully compliant to that revision. For PD 3.0 functionality, designers must select a newer-generation controller such as the STUSB4500 or FUSB307.
How does the FUSB302B10MPX handle VCONN power delivery?
The FUSB302B10MPX integrates a dedicated VCONN power switch capable of delivering up to 560 mA to either CC1 or CC2, selected by VCONN_CC1/VCONN_CC2 register bits. It includes over-current protection (trip threshold 600–1000 mA), thermal shutdown at 145 °C, and soft-start (1.5 ms typical). The switch is controlled entirely via I²C registers - no external FET or driver is required - simplifying layout and reducing BOM count compared to discrete VCONN solutions.
What is the purpose of the TOGGLE bit in Control2 register (0x08)?
The TOGGLE bit (bit 0 of register 0x08) enables hardware-assisted DRP auto-toggle mode. When set to 1, the FUSB302B10MPX autonomously sequences through SNK (tTOG1 = 45 ms typ) and SRC (tTOG2 = 30 ms typ) states without host firmware intervention. This eliminates the need for continuous polling of BC_LVL interrupts and reduces MCU overhead. The toggle cycle concludes with a power-save disable period (configurable up to 160 ms), making it ideal for battery-powered devices requiring low-duty-cycle USB-C detection.
Can the FUSB302B10MPX detect USB audio or debug accessories?
Yes, the FUSB302B10MPX supports USB audio and debug accessory detection via its integrated Ra/Rd comparators and programmable MDAC. By configuring MEAS_CC1/MEAS_CC2 and setting MDAC[5:0] values, the device measures CC pin voltages and distinguishes between Rd (5.1 kΩ), Ra (23.7 kΩ), and USB audio/debug adapter thresholds (0.42 V, 0.8 V, 1.6 V, 2.6 V). These measurements trigger BC_LVL[1:0] status bits and I_BC_LVL interrupts, enabling host software to identify accessory type and initiate appropriate responses.
FUSB302B10MPX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- 14-WFQFN Exposed Pad
- Programmable:
- Not Verified
- Protocol:
- USB
- Function:
- Controller
- Interface:
- I2C
- Standards:
- USB 2.0
- Voltage - Supply:
- 3.3V, 5V
- Current - Supply:
- 560mA
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 14-WQFN (2.5x2.5)
- Grade:
- -
- Qualification:
- -
FUSB302B10MPX FAQ
1.How can I place an order for FUSB302B10MPX through Aetrix?
Please submit a Request for Quotation (RFQ) for FUSB302B10MPX 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 FUSB302B10MPX reliable?
The price and inventory of FUSB302B10MPX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for FUSB302B10MPX is usually 5 days.
3.What payment methods are accepted for FUSB302B10MPX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for FUSB302B10MPX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for FUSB302B10MPX?
FUSB302B10MPX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your FUSB302B10MPX 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 FUSB302B10MPX?
For technical support, including FUSB302B10MPX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your FUSB302B10MPX requirements.
6.How does Aetrix verify that FUSB302B10MPX is sourced from the original manufacturer or authorized distributors?
All FUSB302B10MPX 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 FUSB302B10MPX meets industry standards.
7.What is the process for return or replacement of FUSB302B10MPX?
All FUSB302B10MPX units undergo pre-shipment inspection (PSI). If there is an issue with FUSB302B10MPX, 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 FUSB302B10MPX part is unused and in its original packaging.
Return procedure for FUSB302B10MPX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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