NX3P191UK,012

Overview

The NX3P191UK is a logic-controlled high-side load switch designed for portable systems. It features an ultra-small CSP package and supports input voltages from 0.8 V to 5.5 V, making it suitable for various point-of-load power designs. The device provides continuous current loading capability of up to 500 mA. It includes integrated protection circuits such as over-temperature shutdown and reverse current blocking to enhance system reliability. The component operates within a temperature range of -40°C to +85°C and is optimized to extend battery life in mobile applications.

Feature Summary

• Logic-controlled high-side switching with low on-resistance
• Integrated over-temperature and reverse current protection
• Ultra-small chip-scale packaging for space-constrained designs
• Compatible with low-voltage processor control signals

Applications

• Portable consumer electronics
• Mobile phone power management
• Point-of-load voltage regulation
• Battery-powered device subsystems

Procurement Notes

Verify the specific ordering suffix and tape-and-reel quantity against the official NXP product data sheet. Confirm that the device variant matches the required current rating and package dimensions for your PCB layout. Ensure compatibility with the system's logic voltage levels for the enable pin. Check for any regional compliance certifications required for your target market before finalizing the procurement order.

Selection Notes

Select this component when a compact solution is needed for managing power distribution in sub-systems with input voltages between 0.8 V and 5.5 V. It is appropriate for applications requiring built-in thermal and reverse current protection without external components. Consider this part if the design demands minimal board space and compatibility with standard logic-level control signals from microcontrollers or PMICs.

Part Context

This device belongs to NXP’s family of general load switches, which are engineered for small, tiny-package applications. These switches support wide input voltage ranges and are ideal for point-of-load power designs in space-limited environments. The series focuses on reducing overall system power consumption and optimizing charging cycles for portable electronic devices.

Replacement Considerations

NX3P191BUK is a documented alternative within the same product family offering similar functionality and package characteristics.