NCP380LMU05AATBG

Overview

The NCP380LMU05AATBG is a high-side power switch IC from onsemi, featuring a P-channel output configured for single-channel distribution. It operates within a load voltage range of 2.5V to 5.5V and supports a maximum continuous output current of 500mA. The device incorporates a typical on-resistance of 55 milliohms and includes fixed overcurrent protection with UVLO. Designed for surface-mount installation, it utilizes a compact 6-UDFN (2x2) package with an exposed pad. The component functions with a non-inverting open/switch interface and maintains operational reliability across a temperature range of -40°C to 85°C.

Feature Summary

• Integrates fixed overcurrent limiting and under-voltage lockout for robust fault protection
• Features controlled slew rate capability to minimize inrush current during turn-on
• Provides status flag output for monitoring switch state and fault conditions
• Utilizes low on-resistance P-channel architecture for efficient power distribution

Applications

• High-side switching for peripheral power distribution in embedded systems
• Load protection circuits requiring fixed current limit thresholds
• Power management units controlling 2.5V to 5.5V logic loads
• Industrial control boards needing compact high-side switch solutions

Procurement Notes

Verify the specific suffix against official datasheets to confirm parameter alignment, as variations exist within the NCP380 family regarding current limits and adjustability. Confirm RoHS compliance status and material declarations prior to integration. Ensure the 6-UDFN footprint matches PCB layout requirements, particularly regarding thermal pad connectivity. Cross-reference revision history notices for any packaging or fabrication changes that may impact assembly processes.

Selection Notes

Select this part when a fixed 500mA current limit is sufficient for the target load, distinguishing it from adjustable variants like the LMUAJA series. The non-adjustable nature simplifies design by removing external programming components. Consider the 55 milliohm on-resistance for power dissipation calculations within the small UDFN package. Ensure the application does not require analog current sensing, which is reserved for other family members.

Part Context

This component belongs to the NCP380 series of high-side switches designed for general-purpose power distribution. Unlike higher-current variants such as the NCP380HMU15AATBG which supports 1.5A, this model targets lower-power applications up to 500mA. It shares the same 6-UDFN package form factor but differs in internal current limit settings compared to adjustable versions, offering a cost-effective solution for fixed-load scenarios.

Replacement Considerations

Direct substitutes include NCP380LMUAJAATBG if adjustable current limiting is acceptable, though parameters differ. For higher current needs, consider NCP380HMU15AATBG or NCP380HMU05AATBG. Automotive-grade equivalents are available in the NCV380 series, such as NCV380LMUAJAATBG, provided AEC-Q100 qualification is required.