NX5P3363UKZ

Overview

The NX5P3363UKZ is a logic-controlled high-side power switch designed for USB PD applications. It features an N-channel output with a maximum continuous current of 3.3A and a typical on-resistance of 35 milliohms. The device operates within a load voltage range of 4V to 5.5V and supports a VBUS withstand capability of 29V. It utilizes a 16-WLCSP package measuring 2.2x2.2 mm. The component includes adjustable current limiting, soft-start functionality, and fault protection against overcurrent, overtemperature, and reverse current conditions.

Feature Summary

• Adjustable current limiting via external resistor allows threshold programming from 400 mA to 3.3 A
• Integrated soft-start controls rise and fall times to minimize inrush current during switching events
• Built-in fault protection isolates the switch terminal upon detection of overcurrent, overtemperature, or reverse current
• Open-drain fault output provides status indication when protective circuits are activated

Applications

• USB Power Delivery (PD) port power management
• Portable electronic systems requiring battery life optimization
• Space-constrained mobile device designs
• VBUS protection circuits in consumer electronics

Procurement Notes

Verify the specific suffix UKZ corresponds to the required packaging format and tape-and-reel specifications. Confirm RoHS3 compliance and MSL rating requirements for your assembly process. Ensure the 16-WLCSP footprint matches your PCB layout constraints. Check for any specific ordering quantity multiples mandated by the manufacturer for standard production runs.

Selection Notes

Select this component when designing USB PD interfaces requiring precise current regulation and robust fault handling. The adjustable ILIM pin offers flexibility for varying load profiles without changing hardware. The compact WLCSP package is suitable for dense layouts where space is limited. Consider the 29V VBUS tolerance for compatibility with higher voltage USB PD standards.

Part Context

This part belongs to the NX5 series of logic-controlled high-side load switches from NXP Semiconductors. The series targets portable applications needing efficient power distribution and extended battery operation. These devices typically integrate advanced protection features and small form factors to support modern mobile and embedded system architectures.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify electrical compatibility and pinout alignment if considering alternative manufacturers.