NCP380HSN05AAT1G

Overview

The NCP380HSN05AAT1G 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 typical on-resistance of 70 mΩ in the TSOP-5 package. The device features a fixed current limit threshold of 500 mA. It operates within a load voltage range of 2.5 V to 5.5 V and supports an operating temperature range of -40°C to +85°C. The switch includes controlled slew rate capabilities to minimize current ringing during switching events.

Feature Summary

• Integrates a P-channel MOSFET with fixed current limiting protection for overload and short circuit scenarios.
• Features controlled slew rate functionality to reduce current ringing during turn-on and turn-off transitions.
• Includes internal reverse voltage detection to disable the switch if output voltage exceeds input voltage.
• Provides a status flag output that indicates fault conditions such as overcurrent, reverse voltage, or thermal shutdown.

Applications

• Power distribution systems requiring protection against large capacitive loads
• Applications susceptible to short circuit conditions needing current regulation
• Systems requiring controlled switching speeds to minimize electromagnetic interference

Procurement Notes

Verify the specific package type and pinout configuration against the official datasheet before integration. Confirm that the fixed 500 mA current limit meets the application requirements, as this variant does not support external adjustment. Ensure compatibility with the 2.5 V to 5.5 V supply voltage range and check thermal management needs for the TSOP-5 package under maximum load conditions.

Selection Notes

Select this component when a fixed current limit is sufficient and external programming resistors are undesirable. Compare with adjustable variants like the NCP380HSNAJAAT1G if customizable current thresholds between 500 mA and 2.1 A are required. Consider the TSOP-5 package constraints versus other available packages like DFN or TSOP-6 based on board space and thermal dissipation requirements.

Part Context

This part belongs to the NCP380 family of high-side power switches from onsemi. The family offers various configurations including fixed and adjustable current limits, different package options, and varying on-resistances. The NCP380HSN05AAT1G specifically targets cost-sensitive applications requiring reliable protection without the complexity of external current setting components.

Replacement Considerations

Direct substitutes within the same series include NCP380HSN10AAT1G (fixed 1A limit) or NCP380LSN05AAT1G (low-active enable). For adjustable current limits, consider NCP380HSNAJAAT1G. Verify pin compatibility and electrical parameters before substitution.

FAQ

Is the current limit threshold adjustable on the NCP380HSN05AAT1G?

No, the NCP380HSN05AAT1G has a fixed current limit threshold of 500 mA. Adjustable versions are available in the NCP380 family, such as those ending in AJA.

What happens if the output voltage exceeds the input voltage?

The internal reverse voltage detection comparator disables the power switch to protect the input side devices from reverse current flow.

How does the device handle short circuit conditions?

When a short circuit occurs, the device switches to constant current regulation mode, limiting the output current to the fixed threshold level until the fault is removed.