NCP3901FCCT1G

Overview

The NCP3901FCCT1G is a dual-channel USB power switch manufactured by onsemi, housed in a compact 28-WLCSP package measuring 3.1x1.65 mm. It features an N-channel output configuration capable of delivering up to 3A per channel with a typical on-resistance of 50 milliohms. The device supports a supply voltage range of 0V to 28V and a load voltage of 0V to 5.5V. Integrated protection mechanisms include over-temperature, over-voltage, and under-voltage lockout (UVLO). It utilizes a differential input interface and provides status flag outputs for fault monitoring.

Feature Summary

• Dual-channel architecture enabling independent control of two high-side or low-side loads via a single 2:1 input-to-output ratio.
• Integrated comprehensive fault protection including thermal shutdown, over-voltage protection, and under-voltage lockout to safeguard connected circuits.
• Low on-resistance design minimizes power loss and heat generation during continuous operation.
• Status flag output provides real-time indication of operational state and fault conditions.

Applications

• USB hub power distribution and switching
• Portable electronic device power management
• Industrial equipment load protection

Procurement Notes

Verify component authenticity through authorized distributors due to the part's discontinued status. Confirm that the received units match the specific ordering suffix and package marking. Check for any relevant Product Change Notices or End-of-Life announcements from onsemi prior to finalizing procurement plans. Ensure storage conditions comply with moisture sensitivity level requirements.

Selection Notes

Select this component when designing systems requiring dual-channel USB power switching with integrated protection. Consider the 28-WLCSP package size for space-constrained applications. Evaluate the 3A current rating against peak load requirements. Ensure the control logic matches the differential input interface specifications. Verify compatibility with the 0V to 5.5V load voltage range.

Part Context

The NCP3901 belongs to onsemi's family of protected power switches designed for USB applications. This specific model integrates dual channels into a small footprint, distinguishing it from single-channel variants. It serves as a solution for managing power delivery in multi-port devices while maintaining system integrity through built-in diagnostic and protection features.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Due to the discontinued status, alternative sourcing requires verification of functional equivalence and pin compatibility with existing designs.