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onsemi FUSB3301MPX
- Part No.:
- FUSB3301MPX
- Manufacturer:
- onsemi
- Category:
- Controllers
- Package:
- 10-WFDFN Exposed Pad
- Datasheet:
-
FUSB3301MPX.pdf
- Description:
- IC USB TYPE C CTLR PROGR 10MLP
- Quantity:
- Payment:
- Shipping:
Inventory:3,185
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Product details
Overview
FUSB3301MPX from onsemi is an autonomous USB Type-C source-only controller for mobile chargers and power adapters, supporting USB Type-C v1.2, advertising 0.9 A / 1.5 A / 3.0 A VBUS current levels via CC1/CC2, enforcing VBUS assertion only after valid sink detection, and operating from 3.0 V to 5.5 V with 5 µA standby current in a 3 mm × 3 mm MLP-10 package.
For engineers reviewing the FUSB3301MPX datasheet, pinout, applications, or equivalent options, key selection criteria include CC channel detection thresholds (vRd-SRC3A = 2.60 V), SW open-drain VBUS switch control timing (tCCDebounce = 150 ms), HOST pin current select logic, and 2 kV HBM ESD protection on CC/VBUS pins.
Technical Context
The FUSB3301MPX implements a dedicated state machine for USB Type-C source attachment detection using dual CC pins (CC1/CC2) with configurable Ra/Rd voltage thresholds and debounce timers (tCCDebounce = 150 ms, tPDDebounce = 15 ms). It operates exclusively in fixed-source mode with no sink or DRP capability.
Current advertisement is determined by HOST1/HOST2 logic states: GND/GND selects 3.0 A (330 µA CC current), GND/VDD or VDD/GND selects 1.5 A (180 µA), and VDD/VDD selects 0.9 A (80 µA); all thresholds are validated across −40 °C to +85 °C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDD Range | 3.0 V to 5.5 V - supports direct connection to common adapter auxiliary rails without LDO |
| Standby Current | 5 µA typical - enables ultra-low-power operation during unattached state |
| CC Current Levels | 80 µA / 180 µA / 330 µA - maps directly to USB Type-C standard 0.9 A / 1.5 A / 3.0 A VBUS sourcing |
| Rd Detection Threshold | 2.60 V max for 3 A mode - ensures reliable UFP sink detection under worst-case voltage drop |
| SW Output Drive | Open-drain, VOL = 0.4 V at 4 mA - compatible with common N-channel load switches |
| ESD Protection | 2 kV HBM on CC1/CC2/VBUS - meets IEC 61000-4-2 system-level robustness requirements |
| Operating Temp | −40 °C to +85 °C - qualified for industrial-grade power adapter environments |
Pinout & Package
Package: 10-lead WDFN (MLP), 3 mm × 3 mm, 0.5 mm pitch, case 511DM, exposed thermal pad (not electrically connected).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CC1, CC2 | Type-C Configuration Channel I/O | Dual bidirectional analog pins for Ra/Rd detection and BC1.2/Type-C negotiation; require external 5.1 kΩ pull-down on sink side |
| HOST1, HOST2 | Current Select Digital Inputs | CMOS inputs with internal pull-up; logic state sets advertised current level (0.9/1.5/3.0 A) per truth table |
| SW | VBUS Load Switch Control | Open-drain output driving gate of external N-MOSFET; HiZ = VBUS off, LOW = VBUS on |
| VDD, GND | Power Supply | Single-supply operation; GND must be low-impedance return path for CC sensing accuracy |
| NC1–NC3 | No Connect | Internally unconnected; may float or tie to GND per layout best practice |
Key Features
| Feature | Design Value |
|---|---|
| Fully autonomous source state machine | Zero firmware required - handles attach/detach, debounce, and VBUS enable/disable without host MCU intervention |
| Three standardized current modes | Hardware-selectable 0.9 A / 1.5 A / 3.0 A compliance eliminates need for external configuration EEPROM or resistor networks |
| Low-voltage CC threshold detection | vRa-SRC3A = 0.80 V enables reliable Ra detection even with high-impedance CC traces or aging connectors |
| Robust timing control | tCCDebounce = 150 ms prevents false VBUS assertion from transient noise on CC lines |
| Integrated ESD protection | 2 kV HBM on CC/VBUS pins reduces need for external TVS diodes in cost-sensitive AC-DC adapter designs |
Applications
| Mobile Wall Charger | USB-C Power Bank Output Port |
|---|---|
Use Scenario: Compact 5 V / 3 A wall charger for smartphones and tablets with minimal BOM count. IC Role / Device Role / Timing Role: USB Type-C source controller managing CC negotiation and VBUS switching. Use Value: Enables full 15 W charging compliance with zero MCU overhead and <5 µA standby draw. | Use Scenario: Dual-output portable power bank with one legacy USB-A and one USB-C port. IC Role / Device Role / Timing Role: Dedicated Type-C source interface handling sink detection and current advertisement. Use Value: Eliminates need for microcontroller-based USB PD implementation while supporting standard 3 A charging. |
| AC-DC Adapter Module | OEM Laptop Docking Station |
Use Scenario: 20 W OEM AC-DC adapter module integrated into monitor or docking station power supply. IC Role / Device Role / Timing Role: Autonomous Type-C source controller interfacing with primary-side controller via SW signal. Use Value: Reduces design complexity by offloading CC protocol handling from main SMPS controller. | Use Scenario: Multi-port laptop dock with independent USB-C power delivery per port. IC Role / Device Role / Timing Role: Per-port Type-C source controller enabling simultaneous charging and data passthrough. Use Value: Allows scalable multi-port architecture using identical FUSB3301MPX instances per port without shared resources. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar USB Type-C source controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TUSB320LAIRTER | Supports both source and sink modes; includes I²C interface for dynamic current reconfiguration | Requires MCU coordination; suited for DRP or programmable adapters | Select when bidirectional capability or runtime current adjustment is needed |
| IP2721 | Integrated MOSFET driver and VBUS discharge; supports up to 60 W with external PD controller | Designed for USB PD 3.0 systems; not autonomous for basic Type-C source | Select when combining Type-C source logic with PD negotiation in higher-power adapters |
Compared with TUSB320LAIRTER and IP2721, the FUSB3301MPX delivers lowest BOM cost and smallest footprint for fixed 15 W source-only applications, with no firmware dependency and guaranteed 5 µA standby - ideal where simplicity and reliability outweigh programmability.
Availability
FUSB3301MPX is available at Aetrix Electronics and suitable for mobile chargers, AC-DC adapters, and USB-C power bank output ports requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for FUSB3301MPX 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 (formerly ON Semiconductor) is a global semiconductor supplier delivering energy-efficient silicon solutions for automotive, industrial, cloud, medical, and IoT applications.
The FUSB3301MPX belongs to onsemi's USB Type-C interface controller product line, designed specifically to simplify USB-C source implementation in cost-sensitive, space-constrained power adapters without MCU involvement.
FAQ
What is the primary function of the FUSB3301MPX in a USB-C power adapter?
The FUSB3301MPX serves as a fully autonomous USB Type-C source controller that detects sink attachment via CC1/CC2, advertises fixed current levels (0.9 A / 1.5 A / 3.0 A), and controls an external VBUS switch through its SW pin. It requires no firmware and operates independently in the FUSB3301MPX-based adapter design.
Does the FUSB3301MPX support USB Power Delivery (PD) negotiation?
No, the FUSB3301MPX does not support USB PD negotiation. It implements only the USB Type-C v1.2 source-only baseline protocol - advertising fixed current levels over CC lines without BMC communication or voltage scaling. For PD functionality, a separate PD controller such as FUSB302B or IP2721 is required alongside the FUSB3301MPX.
How is the advertised current level selected on the FUSB3301MPX?
The advertised current level on the FUSB3301MPX is selected by the logic states of HOST1 and HOST2 pins: GND/GND configures 3.0 A (330 µA CC current), GND/VDD or VDD/GND configures 1.5 A (180 µA), and VDD/VDD configures 0.9 A (80 µA). These pins have internal pull-ups, so tying to GND sets the level without external resistors.
What is the maximum VBUS power supported by the FUSB3301MPX?
The FUSB3301MPX supports up to 15 W VBUS power delivery - corresponding to 5 V × 3.0 A - as specified in its datasheet. It does not support higher voltages (9 V, 15 V, 20 V) or variable current profiles beyond the three standard Type-C levels, and cannot be used in USB PD 3.0 or PPS applications.
Can the FUSB3301MPX be used in sink or dual-role (DRP) applications?
No, the FUSB3301MPX is strictly a source-only controller. Its block diagram, state machine, and pin functions (e.g., no Rd pull-up, no VCONN control, no sink-mode detection logic) confirm it lacks sink or DRP capability. For sink or DRP use cases, alternatives like TUSB320LAIRTER or FUSB302B must be selected instead of the FUSB3301MPX.
FUSB3301MPX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- 10-WFDFN Exposed Pad
- Programmable:
- Not Verified
- Protocol:
- USB
- Function:
- Controller
- Interface:
- USB
- Standards:
- -
- Voltage - Supply:
- 3V ~ 5.5V
- Current - Supply:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 10-MLP (3x3)
- Grade:
- -
- Qualification:
- -
FUSB3301MPX FAQ
1.How can I place an order for FUSB3301MPX through Aetrix?
Please submit a Request for Quotation (RFQ) for FUSB3301MPX 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 FUSB3301MPX reliable?
The price and inventory of FUSB3301MPX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for FUSB3301MPX is usually 5 days.
3.What payment methods are accepted for FUSB3301MPX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for FUSB3301MPX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for FUSB3301MPX?
FUSB3301MPX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your FUSB3301MPX 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 FUSB3301MPX?
For technical support, including FUSB3301MPX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your FUSB3301MPX requirements.
6.How does Aetrix verify that FUSB3301MPX is sourced from the original manufacturer or authorized distributors?
All FUSB3301MPX 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 FUSB3301MPX meets industry standards.
7.What is the process for return or replacement of FUSB3301MPX?
All FUSB3301MPX units undergo pre-shipment inspection (PSI). If there is an issue with FUSB3301MPX, 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 FUSB3301MPX part is unused and in its original packaging.
Return procedure for FUSB3301MPX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
FUSB3301MPX Tags
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PTN5150AHXMP
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DP83826IRHBR
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FT260Q-R
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