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FUSB251UCX The ON Semiconductor FUSB251UCX is a USB Switch IC designed for Type-C CC and SBU protection. It operates within a 2.7V to 5.5V supply range and a temperature range of -40°C to 85°C.
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FUSB251UCX

Available from 1 distributors
Mfr Name: On Semiconductor
On Semiconductor
The ON Semiconductor FUSB251UCX is a USB Switch IC designed for Type-C CC and SBU protection. It operates within a 2.7V to 5.5V supply range and a temperature range of -40°C to 85°C.
✓ Total Stock: 1,000 pcs

FUSB251UCX Available from 1 distributor

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FUSB251UCX Specifications Quick View

Most important parameters for selection – full specs in datasheet.
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Manufacturer Name
Bandwidth
Current
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Interface
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Operating Temperature
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FUSB251UCX Description

Short technical summary and product information.

The FUSB251UCX from ON Semiconductor is an I2C controlled switch IC providing over-voltage protection for CC and SBU pins in Type-C interfaces. It features SPST switches on CC1/2 and SBU1/2 paths, enabling automatic operation with valid VDD. The device includes a dead battery mode, where CC pins are pulled down with Rd, allowing source devices to provide Vbus for battery charging.

 

Key electrical specifications include an operating supply voltage range of 2.7V to 5.5V and a typical operating supply current of 15µA. The on-resistance for CC paths is 0.3 Ohms typical, and for SBU paths, it is 3 Ohms typical. The SBU switch offers a bandwidth of 50 MHz. The IC also provides ±35V surge protection and 24V DC tolerance on CC and SBU pins.

 

This IC is housed in a compact 15-ball WLCSP (1.49x2.06 mm) package, suitable for surface mounting. The operating temperature range is -40°C to 85°C. Applications include smart phones, tablets, gaming devices, and other portable electronics requiring robust Type-C interface protection.

FUSB251UCX Quick Information

Product Type: USB Switch IC
Canonical Name: FUSB251UCX Type-C CC and SBU Protection IC
Subcategory: Switch ICs

FUSB251UCX Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

FUSB251UCX Features

  • Type-C CC and SBU protection IC.
  • I2C interface with interrupt notification.
  • 2.7V to 5.5V operating supply voltage.
  • On-chip IEC ESD protection.
  • 15-WLCSP package for compact designs.

FUSB251UCX Applications

  • Protects CC and SBU pins in Type-C.
  • Enables battery charging in dead battery mode.
  • Suitable for smart phones and tablets.
  • Used in portable gaming devices.
  • Ideal for external USB storage.

FUSB251UCX FAQs

5 frequently asked questions generated from this part’s specifications.
What is the operating voltage range for the FUSB251UCX?

The operating supply voltage range is 2.7 V to 5.5 V.

What is the operating temperature range for the FUSB251UCX?

The operating temperature range is -40°C to 85°C.

What package type is the FUSB251UCX available in?

The FUSB251UCX is available in a 15-WLCSP package.

What is the on-resistance for the CC and SBU paths?

The typical on-resistance for CC paths is 0.3 Ohms, and for SBU paths, it is 3 Ohms.

Does the FUSB251UCX offer surge protection?

Yes, the FUSB251UCX offers ±35 V surge protection on CC and SBU pins.

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