MC33981BPNAR2

Overview

The MC33981BPNAR2 is a single intelligent high-current self-protected high-side switch manufactured by NXP USA Inc. It features an N-channel output configuration with a maximum load voltage range of 6V to 27V and a maximum continuous output current of 40A. The device exhibits a typical on-resistance (Rds On) of 4mOhm. It operates within a junction temperature range of -40°C to 150°C and is housed in a 16-PQFN (12x12) package. Key functional attributes include slew rate control and integrated fault protection mechanisms such as current limiting.

Feature Summary

• Integrates self-protection capabilities for reliable power management
• Features controlled slew rate to minimize electromagnetic interference
• Provides comprehensive fault protection including current limiting

Applications

• DC-DC converters
• Motor control systems
• General-purpose load switching

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the obsolete status indicated in official documentation, as availability may be limited to existing stock or last-time buys. Ensure compatibility with your system's voltage and current requirements before procurement. Request original datasheets and test reports to validate performance specifications against your design needs.

Selection Notes

Select this component for applications requiring high-current switching with integrated protection. The 40A capacity and low on-resistance make it suitable for efficient power distribution. Consider the 1:1 input-to-output ratio and high-side configuration when designing circuit topology. Ensure thermal management strategies accommodate the specified operating temperature range and power dissipation characteristics.

Part Context

This part belongs to NXP’s portfolio of power distribution switches designed for automotive and industrial applications. It serves as a solid-state replacement for electromechanical relays and fuses. The device integrates analog and mixed-signal functions with digital control interfaces, aligning with modern automotive quality standards for reliability and safety in engine control and powertrain systems.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Verify pinout and electrical parameter compatibility if considering alternative components from other manufacturers.