NCP380HMU15AATBG

Overview

The NCP380HMU15AATBG is a high-side power distribution switch from onsemi, designed for applications with large capacitive loads and potential short circuits. It integrates a P-channel MOSFET with a maximum on-resistance of 75 mOhms in a uDFN-6 package. The device features a fixed current limit of 1.5 A and supports an operating supply voltage range of 2.5 V to 5.5 V. Key electrical parameters include a maximum run time of 4 ms and a maximum dwell time of 3 ms. It operates within a temperature range of -40°C to +85°C and provides overcurrent protection by switching to a regulated current mode during fault conditions.

Feature Summary

• Integrates a P-channel MOSFET with controlled slew rates to minimize current ringing during switching events.
• Provides active high-side load switching with fixed current limiting to protect against overcurrent and short circuit faults.
• Includes internal reverse voltage detection to disable the switch when output voltage exceeds input voltage.

Applications

• Power distribution systems requiring protection for large capacitive loads
• Industrial equipment needing high-side switching with overcurrent protection
• Automotive or consumer electronics power management circuits

Procurement Notes

Verify the specific suffix '15' confirms the fixed 1.5 A current limit setting, as other variants in the NCP380 family offer adjustable or different fixed thresholds. Confirm the uDFN-6 package outline matches the design footprint requirements. Check RoHS compliance documentation for material declarations if required by the target market regulations. Ensure the operating voltage range aligns with the system's 2.5 V to 5.5 V supply constraints.

Selection Notes

Select this component when a fixed 1.5 A current limit is appropriate for the load, eliminating the need for external programming resistors used in adjustable variants like the NCP380HMUAJAATBG. Consider the 75 mOhms maximum on-resistance for thermal dissipation calculations, noting the 830 mW power dissipation rating. Evaluate the 4 ms run time and 3 ms dwell time specifications against the application's duty cycle and recovery requirements. Compare against lower current options like the NCP380LMU05AATBG if the load demand is significantly less than 1.5 A.

Part Context

This part belongs to the NCP380 series of high-side power switches from onsemi. The series offers various current limit configurations, including fixed settings (e.g., 0.5 A, 1.0 A, 1.5 A, 2.1 A) and adjustable ranges (500 mA to 2.1 A). The HMU suffix indicates a specific package and current limit variant within the broader NCP380 family, which shares common features like reverse voltage protection and status flag outputs.

Replacement Considerations

For a fixed 1.5 A limit, no direct pin-to-pin substitute with identical current settings is explicitly listed in public data; however, the NCP380HMU21AATBG (2.1 A fixed) or NCP380HMU05AATBG (0.5 A fixed) are available in the same package. The NCP380HMUAJAATBG offers an adjustable limit but requires external components. Verify compatibility before substitution.