My Inquiry
My Account
onsemi FUSB302TMPX
- Part No.:
- FUSB302TMPX
- Manufacturer:
- onsemi
- Category:
- Controllers
- Package:
- 14-WFQFN Exposed Pad
- Datasheet:
-
FUSB302TMPX.pdf
- Description:
- IC CONTROLLER USB TYPE C 14MLP
- Quantity:
- Payment:
- Shipping:
Inventory:4,773
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
FUSB302TMPX from onsemi is a programmable USB Type-C controller with integrated Power Delivery (PD) 2.0 physical layer, supporting SRC/DRP/SNK roles in wall chargers and automotive adapters. It delivers 100 W power negotiation via BMC signaling, features autonomous DRP toggle, CC/VCONN switching with over-current protection, and operates across −40 °C to +85 °C in a 14-lead WQFN package.
For engineers reviewing the FUSB302TMPX datasheet, pinout, applications, or equivalent options, key selection criteria include BMC PD 2.0 compliance, I²C-configurable dual-role behavior, VCONN switch current limit (800 mA typ), low standby current (25 µA typ), and USB Type-C 1.2 attach/detach/orientation detection - all validated for charging adaptors, laptop power supplies, and automotive cigarette-lighter interfaces.
Technical Context
The FUSB302TMPX implements a dedicated BMC physical layer with 48-byte TX and 80-byte RX FIFOs, enabling host-controlled PD packet exchange without embedded protocol stack. Its CC pin circuitry integrates programmable DAC-based comparators for precise Ra/Rd detection and HOST_CUR-driven current capability signaling (80/180/330 µA thresholds).
Autonomous DRP toggle is implemented via internal timing control (tTOG1 = 45 ms typ, tTOG2 = 30 ms typ), while VCONN switching includes thermal shutdown at 145 °C and hysteresis of 10 °C. The device uses Fast Mode Plus I²C (up to 1 MHz) with open-drain SDA/INT_N and push-pull SCL, requiring external pull-ups.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| USB Type-C Support | Full USB Type-C 1.2 compliance: attach/detach detection, orientation sensing, audio/debug accessory mode, active cable detection |
| Power Delivery | USB PD 2.0 BMC physical layer only - requires external policy engine; supports GoodCRC auto-response, soft/hard reset, retries |
| Operating Temperature | −40 °C to +85 °C - qualified for industrial and consumer charging applications, not automotive-grade (FUSB302TVx variants are) |
| VCONN Switch OCP | 800 mA typical trip threshold - protects full-featured USB 3.1 cables during VCONN power delivery |
| Supply Current (Standby) | 25 µA typical - enables ultra-low-power unattached monitoring with TOGGLE enabled |
| I²C Interface | Fast Mode Plus up to 1 MHz - supports high-speed register access for real-time port role reconfiguration |
| CC Pin Threshold Accuracy | ±5 mV hysteresis on Ra/Rd comparators - ensures robust current capability detection per USB Type-C spec |
Pinout & Package
Package: 14-lead WQFN (2.5 mm × 2.5 mm, 0.5 mm pitch), Pb-free, thermally enhanced with dual GND pads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CC1 / CC2 | Config Channel I/O | Dual bidirectional pins for USB Type-C orientation detection, current capability signaling (SRC), sink detection (SNK), and BMC PD communication |
| VCONN | Power Switch Output | Regulated output switched to CC1 or CC2 to power full-featured USB 3.1 cables; includes OCP and thermal shutdown |
| VBUS | Input (OVP Protected) | Monitors upstream VBUS presence for attach/detach detection when operating as SNK; rated to 21 V max operating |
| VDD | Supply Input | 2.7–5.5 V main supply; powers internal logic, comparators, and BMC transceiver |
| INT_N | Open-Drain Interrupt | Active-low interrupt signaling CC activity, VBUSOK, BMC packet receipt, or error conditions - requires external pull-up |
| SCL / SDA | I²C Interface | Standard I²C bus interface (SCL input, SDA open-drain I/O) for configuration, status readback, and FIFO access |
| GND | Ground | Two dedicated ground pins (pins 8 & 9) for low-impedance return and thermal dissipation |
Key Features
| Feature | Design Value |
|---|---|
| Dual-role port (DRP) with autonomous toggle | Hardware-timed SRC↔SNK transition (45 ms SNK, 30 ms SRC phases) eliminates firmware polling overhead |
| VCONN switch with over-current protection | 800 mA typical OCP threshold and 1.5 ms soft-start prevent inrush damage to USB 3.1 cables |
| Programmable current capability signaling | Three discrete CC pull-up levels (80/180/330 µA) directly map to USB Type-C default/1.5 A/3.0 A sourcing modes |
| USB PD 2.0 BMC physical layer | 48-byte TX + 80-byte RX FIFOs enable host-driven PD messaging without embedded MCU or protocol stack |
| Low-power unattached monitoring | 25 µA typical ICC in TOGGLE-enabled standby - extends battery life in portable adapters |
Applications
| USB Wall Charger | Automotive Cigarette Adapter |
|---|---|
Use Scenario: Compact AC-to-DC adapter delivering up to 100 W via USB Type-C PD negotiation. IC Role / Device Role / Timing Role: USB Type-C controller managing CC line detection, VCONN switching, and BMC PD packet framing under host processor control. Use Value: Enables certified 100 W charging with minimal BOM count - replaces discrete CC comparators, VCONN switches, and PD PHY ICs. | Use Scenario: In-vehicle power adapter converting 12 V DC to regulated 5–20 V USB PD output. IC Role / Device Role / Timing Role: Dual-role port controller detecting vehicle-side host attachment and negotiating power with mobile devices. Use Value: Supports fast charging and alternate modes (e.g., DisplayPort) while meeting automotive thermal limits via VCONN thermal shutdown. |
| Laptop Power Supply | USB-C Docking Station |
Use Scenario: Multi-port laptop charger supporting simultaneous charging and data/video through single USB-C cable. IC Role / Device Role / Timing Role: SRC-mode controller coordinating VBUS ramp-up, CC orientation lock, and PD contract establishment before enabling downstream paths. Use Value: Ensures reliable plug-in detection and prevents misorientation-induced short circuits during hot-plug events. | Use Scenario: Desktop dock providing USB 3.1 data, HDMI/DP alt-mode, and 60 W+ power delivery. IC Role / Device Role / Timing Role: DRP controller managing role swap between host (when connected to laptop) and device (when connected to phone). Use Value: Enables seamless role reversal without manual reconfiguration - critical for user-friendly docking experience. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar USB Type-C controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TUSB320LAIRTER | No integrated BMC PD PHY; supports only basic Type-C detection and legacy BC1.2 charging | Limited to 5–15 W non-PD applications; no VCONN switching or alt-mode support | Select when PD negotiation is unnecessary and cost sensitivity outweighs feature depth |
| FUSB303MPX | Enhanced BMC PD stack with hardware CRC generation and automatic GoodCRC; same WQFN-14 package | Reduces host CPU load for PD messaging; supports higher reliability in noisy automotive environments | Choose for production systems requiring reduced firmware complexity and improved PD robustness |
Compared with TUSB320LAIRTER, FUSB302TMPX adds full BMC PD 2.0 PHY and VCONN switching but requires external policy engine; versus FUSB303MPX, it lacks hardware CRC acceleration and has lower PD automation - making it optimal for cost-sensitive, firmware-flexible designs needing full PD capability.
Availability
FUSB302TMPX is available at Aetrix Electronics and suitable for USB wall chargers, automotive cigarette adapters, and laptop power supplies requiring stable component supply, industrial temperature operation, and USB Type-C 1.2 compliance.
Supply support for FUSB302TMPX 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 supplier delivering energy-efficient silicon solutions for automotive, industrial, cloud, and IoT applications.
The FUSB302TMPX belongs to onsemi's USB Type-C controller product line, designed specifically for compact, low-power, firmware-driven USB-C implementations in charging adaptors and portable power electronics.
FAQ
What is the primary function of the FUSB302TMPX in a USB Type-C system?
The FUSB302TMPX serves as a programmable USB Type-C controller with integrated BMC PD 2.0 physical layer. It handles CC line detection (attach/detach/orientation), VCONN switching for full-featured cables, current capability signaling, and BMC packet framing - all under I²C control by an external host processor. The FUSB302TMPX does not include a built-in PD policy engine; that logic resides in the system MCU.
Does the FUSB302TMPX support USB Power Delivery 3.0 or higher?
No, the FUSB302TMPX supports USB Power Delivery 2.0 only. Its BMC physical layer implements the PD 2.0 specification including GoodCRC response, soft/hard reset, and retry mechanisms. It does not support PD 3.0 features such as Fast Role Swap (FRS), extended messages, or PD 3.0's enhanced security framework. For PD 3.0, designers must select newer controllers like the FUSB303 or FUSB252.
Can the FUSB302TMPX operate without an external microcontroller?
No, the FUSB302TMPX requires an external microcontroller for full functionality. It lacks embedded firmware or policy engine logic. All port role decisions (SRC/SNK/DRP), PD message construction, VBUS control, and interrupt handling must be managed via I²C by the host processor. The FUSB302TMPX provides only the physical layer and configurable analog front-end - not autonomous operation.
What is the maximum VCONN current the FUSB302TMPX can deliver, and how is over-current protection implemented?
The FUSB302TMPX delivers up to 800 mA typical VCONN current, with over-current protection triggering between 600 mA and 1000 mA depending on voltage and temperature. Protection is implemented via an internal current-sense circuit that disables the VCONN switch within 1.5 ms of fault detection. Recovery requires host software to clear the fault condition and re-enable the switch - no automatic reset occurs.
How does the FUSB302TMPX handle USB Type-C orientation detection?
The FUSB302TMPX detects orientation by monitoring voltage states on CC1 and CC2 simultaneously using internal comparators. When a UFP (upstream-facing port) or DFP (downstream-facing port) is attached, one CC pin pulls high (Ra) or low (Rd) while the other remains floating or biased - the device reports orientation via I²C status registers (CC_STATUS). No external components are needed; detection is fully integrated and compliant with USB Type-C 1.2 specification timing and thresholds.
FUSB302TMPX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- 14-WFQFN Exposed Pad
- Programmable:
- Not Verified
- Protocol:
- USB
- Function:
- Controller
- Interface:
- USB
- Standards:
- USB 3.1
- Voltage - Supply:
- 2.7V ~ 5.5V
- Current - Supply:
- 560mA
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 14-MLP (2.5x2.5)
- Grade:
- -
- Qualification:
- -
FUSB302TMPX FAQ
1.How can I place an order for FUSB302TMPX through Aetrix?
Please submit a Request for Quotation (RFQ) for FUSB302TMPX 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 FUSB302TMPX reliable?
The price and inventory of FUSB302TMPX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for FUSB302TMPX is usually 5 days.
3.What payment methods are accepted for FUSB302TMPX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for FUSB302TMPX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for FUSB302TMPX?
FUSB302TMPX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your FUSB302TMPX 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 FUSB302TMPX?
For technical support, including FUSB302TMPX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your FUSB302TMPX requirements.
6.How does Aetrix verify that FUSB302TMPX is sourced from the original manufacturer or authorized distributors?
All FUSB302TMPX 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 FUSB302TMPX meets industry standards.
7.What is the process for return or replacement of FUSB302TMPX?
All FUSB302TMPX units undergo pre-shipment inspection (PSI). If there is an issue with FUSB302TMPX, 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 FUSB302TMPX part is unused and in its original packaging.
Return procedure for FUSB302TMPX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
FUSB302TMPX Tags
-
PTN5150AHXMP
NXP Semiconductors
-
USB3740B-AI9-TR
Microchip Technology
-
USB3740B-AI2-TR
Microchip Technology
-
USB3300-EZK-TR
Microchip Technology
-
USB3300-EZK
Microchip Technology
-
FUSB340TMX
onsemi
-
FUSB302BMPX
onsemi
-
DP83826IRHBR
Texas Instruments
-
MCP2518FDT-E/QBB
Microchip Technology
-
FUSB302MPX
onsemi
-
MCP2518FDT-E/SL
Microchip Technology
-
FT260Q-R
FTDI, Future Technology Devices International Ltd
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
