NCP380HMUAJAATBG

Overview

The NCP380HMUAJAATBG is a high-side power distribution switch featuring a single P-channel MOSFET with a maximum on-resistance of 110 mΩ. It supports an output current up to 2.1 A, with adjustable current limiting ranging from 500 mA to 2.1 A via an external resistor. The device operates within a supply voltage range of 2.5 V to 5.5 V and functions across a temperature range of -40°C to +85°C. Key timing parameters include a maximum turn-on time of 4 ms and a maximum idle time of 3 ms. It is housed in a compact 6-UDFN (2x2) surface-mount package.

Feature Summary

• Integrates adjustable overcurrent protection allowing user-defined current limits between 500 mA and 2.1 A.
• Features controlled slew rates to minimize current ringing during switching operations.
• Includes internal reverse voltage detection to protect input-side components when output exceeds input voltage.
• Provides a status flag output that indicates fault conditions such as overcurrent, reverse voltage, or thermal events.

Applications

• Power distribution in systems with large capacitive loads
• Applications requiring specific short-circuit protection capabilities
• High-side load switching for peripheral devices

Procurement Notes

Verify the specific suffix 'JAATBG' against the manufacturer's official datasheet to confirm pinout, tolerance, and tape-and-reel specifications. Ensure the selected variant matches the required current limit configuration, as fixed and adjustable versions exist within the same family. Cross-reference the package outline dimensions with your PCB footprint library to guarantee mechanical compatibility before finalizing procurement.

Selection Notes

Select this component when a high-side switch with adjustable current limiting is required for protecting downstream loads. It is suitable for applications where controlling inrush current through slew rate management is critical. Consider the 110 mΩ on-resistance for power dissipation calculations at the maximum expected load current. Verify that the operating voltage range of 2.5 V to 5.5 V aligns with the system's logic and power rails.

Part Context

This part belongs to the NCP380 series of power distribution switches designed by onsemi. The series offers various configurations including fixed and adjustable current limits, different packages, and automotive-grade options. The NCP380HMUAJAATBG specifically represents the adjustable current limit variant in a 6-UDFN package, targeting general-purpose industrial and consumer electronics applications requiring robust load protection.

Replacement Considerations

Direct substitutes within the NCP380 family include NCP380HMU05AATBG, NCP380HMU10AATBG, NCP380HMU15AATBG, NCP380HMU20AATBG, and NCP380HMU21AATBG. These variants share the same package and basic functionality but feature fixed current limits instead of adjustable ones. Verify if the fixed limit meets the application requirements before substitution.