NCP380LMUAJAATBG

Overview

The NCP380LMUAJAATBG is a high-side power distribution switch featuring a single P-channel MOSFET with a typical on-resistance of 55 milliohms. It operates within a load voltage range of 2.5V to 5.5V and supports an output current up to 2.1A. The device incorporates adjustable current limiting, allowing thresholds between 500mA and 2.1A via an external resistor. Key electrical parameters include a maximum on-time of 4ms and off-time of 3ms. It provides UVLO protection and a status flag output, housed in a compact 6-UDFN package.

Feature Summary

• Features adjustable current limiting for flexible overload protection
• Includes controlled slew rate to minimize current ringing during switching
• Provides internal reverse voltage detection to protect input circuitry
• Offers a status flag output indicating overcurrent or thermal faults

Applications

• High-side power distribution in systems with large capacitive loads
• Applications requiring specific current limit threshold customization
• Systems needing controlled turn-on/off speeds to reduce EMI
• Protection circuits for sensitive downstream components against short circuits

Procurement Notes

Verify the exact suffix 'AJAA' confirms the adjustable current limit variant, as fixed-limit versions exist within the same family. Ensure the 6-UDFN footprint matches your PCB layout requirements. Confirm RoHS3 compliance if required by your manufacturing standards. Cross-reference the datasheet for the specific enable logic level associated with this part number variant.

Selection Notes

Select this component when design requirements demand customizable current protection rather than fixed thresholds. It is suitable for applications where minimizing inrush current effects through slew rate control is critical. Consider the 6-UDFN package size constraints and thermal dissipation capabilities relative to the expected load current and ambient temperature conditions.

Part Context

This part belongs to the NCP380 series of high-side power switches from onsemi. The series integrates protection features like UVLO and thermal shutdown into a small form factor. Variants differ primarily by current limit configuration (fixed vs. adjustable) and enable logic polarity. This specific model represents the adjustable current limit option within the UDFN-6 package lineup.

Replacement Considerations

Direct substitutes include other NCP380 variants with similar packages but different current limit settings, such as NCP380HMU05AATBG for fixed limits. Verify pin compatibility and electrical specifications before substitution. Alternative manufacturers may offer comparable high-side switches, but ensure interface and protection features align.