UPD350B/Q8X Microchip Integrated Circuit (Quad Flat No-Lead) In Stock
The UPD350B/Q8X is a USB Power Delivery controller supporting Full Speed, High Speed, and SuperSpeed USB 3.0 standards, operating at 3.3V in a compact 28-pin QFN package. It features I2C and SPI interfaces, up to 48 MHz clock, and is designed for robust PD negotiation in consumer and industrial USB systems.
- Manufacturer
- Microchip
- Package
- Quad Flat No-Lead
- Pin Count
- 29
- Lifecycle
- OBSOLETE
- Datasheet
- UPD350B/Q8X Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.2890(MOQ 1)
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of UPD350B/Q8X?
- USB 3.0 Full/High/SuperSpeed Power Delivery controller
- Supports I2C and SPI communication interfaces
- Up to 48 MHz operating clock frequency
- Low 15 mA maximum supply current
- Compact 28-pin QFN package with exposed pad for thermal dissipation
- AEC-Q100 automotive-grade qualified for harsh environments
What is UPD350B/Q8X used for?
The UPD350B/Q8X is ideal for USB Type-C PD chargers, docking stations, and power banks requiring intelligent power negotiation at multiple USB speed tiers. It is also suited for industrial and automotive USB hubs where reliable 3.3V operation and SPI/I2C host control are needed. Designers use this controller in laptop accessories and embedded USB infrastructure that demand full compliance with the USB Power Delivery specification.
What are the specifications of UPD350B/Q8X?
| YTEOL | 0 |
| Bus Compatibility | I2C; SPI; USB |
| Clock Frequency-Max | 48MHz |
| JESD-30 Code | S-PQCC-N28 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | LCC28,.16SQ,16 |
| Package Shape | SQUARE |
| Package Style | CHIP CARRIER, HEAT SINK/SLUG |
| Screening Level | TS 16949 |
| Supply Current-Max | 15mA |
| Supply Voltage-Max | 1.98V |
| Supply Voltage-Min | 1.62V |
| Supply Voltage-Nom | 1.8V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | COMMERCIAL |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.4mm |
| Terminal Position | QUAD |
| uPs/uCs/Peripheral ICs Type | BUS CONTROLLER, UNIVERSAL SERIAL BUS |
| ## UPD350B/Q8X Alternates Showing results | Image |
| Package | Quad Flat No-Lead |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.31.00.01 |
| Country of Origin | Thailand |
Where can I find the UPD350B/Q8X datasheet?
UPD350B/Q8X Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for UPD350B/Q8X?
Compatible alternatives and drop-in replacements for UPD350B/Q8X:
suggested
suggested
suggested
suggested
Frequently Asked Questions
Which USB speed tiers does the UPD350B/Q8X support, and how does that affect design flexibility?
The UPD350B/Q8X supports Full Speed, High Speed, and SuperSpeed USB 3.0 operation, enabling a single controller to cover a wide range of USB Type-C PD applications from 12 MHz Full Speed up to 5 Gbps SuperSpeed, reducing the need for separate silicon in multi-tier product lines.
How does the UPD350B/Q8X integrate with a host MCU on a power delivery board?
The UPD350B/Q8X communicates with a host processor via either I2C or SPI at up to 48 MHz, allowing the MCU to configure PD contract parameters, monitor status registers, and respond to attach or detach events, all while the controller draws only 15 mA maximum from the 3.3V supply rail.
Is the UPD350B/Q8X qualified for automotive or high-reliability applications?
The UPD350B/Q8X is screened to TS 16949 automotive quality standards, making it suitable for in-vehicle USB charging and data hubs. Its 28-pin QFN package with an exposed thermal pad measures 5×5 mm, providing good heat dissipation in space-constrained automotive and industrial enclosures operating across wide temperature ranges.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.2890 | $0.29 |
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