MC33984BPNAR2

Overview

The MC33984BPNAR2 is a power distribution switch IC manufactured by NXP USA Inc. It features two high-side N-channel outputs with a 1:2 input-to-output ratio. The device operates within a load voltage range of 6V to 27V and requires a supply voltage (Vcc/Vdd) between 4.5V and 5.5V. It utilizes an SPI interface for control and communication. Key electrical characteristics include a typical on-resistance of 2 milliohms. The component supports advanced fault protection mechanisms, including fixed current limiting, open load detection, over-temperature shutdown, and over-voltage protection. It is designed for operation across a junction temperature range of -40°C to 150°C.

Feature Summary

• Integrates dual high-side N-channel power switches controlled via a serial peripheral interface.
• Provides comprehensive fault protection including fixed current limiting, open load detection, thermal shutdown, and over-voltage handling.
• Features controlled slew rate capabilities and an integrated watchdog timer for system reliability.

Applications

• Motorcycle Engine Control Units (ECU)
• Small Engine Control Systems
• Lawn Equipment Controllers

Procurement Notes

Verify the obsolete status of this part number before initiating any procurement activities. Confirm that existing inventory or surplus stock meets the required quality standards and traceability documentation. Ensure that alternative components are evaluated for pin compatibility and functional equivalence if replacement is necessary due to manufacturing discontinuation.

Selection Notes

Select this component for applications requiring isolated high-side switching with precise digital control via SPI. Consider its wide operating temperature range and robust fault protection features for automotive environments. Evaluate the need for dual independent channels and ensure the 27V load voltage capability aligns with the target system's power requirements.

Part Context

This device belongs to the MC3398x series of power distribution switches from NXP. It is specifically designed for automotive engine control applications, complementing NXP's portfolio of microcontrollers and analog mixed-signal ICs. The component serves as a critical interface between low-voltage logic controllers and higher-voltage loads in small engine and motorcycle systems.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Users should consult official NXP documentation for recommended alternatives or contact NXP sales representatives for guidance on compatible replacements for this obsolete product.