MC33289DW

Power Management - Specialized Overview

The MC33289DW is a dual high-side switch (DHSS) designed for automotive applications, specifically to drive inductive loads such as solenoids. It integrates two independent channels with a typical on-resistance of 40 mΩ and supports input control voltages from 6 V to 27 V. The device features comprehensive protection mechanisms including overcurrent, overvoltage, undervoltage lockout, and thermal shutdown. It operates within a temperature range of -40°C to +125°C and utilizes a 20-SOIC package.

Power Management - Specialized Feature Summary

• Dual independent high-side output channels for driving inductive loads
• Integrated diagnostic capabilities including open-load detection and fault status reporting
• Robust protection suite covering short circuits, overcurrent, overtemperature, and voltage anomalies
• CMOS-compatible logic interface for direct microcontroller connection

Power Management - Specialized Applications

• Automotive solenoid driver circuits
• Inductive load switching in vehicle electronics
• Industrial control systems requiring high-side switching

Power Management - Specialized Procurement Notes

Verify component authenticity through authorized NXP distributors due to obsolete status. Confirm package integrity and pin alignment against the 20-SOIC specification. Check for RoHS compliance variations across manufacturing batches. Ensure supply chain sources provide traceability documentation for automotive-grade reliability requirements.

Power Management - Specialized Selection Notes

Select this component for designs requiring dual-channel high-side switching with integrated diagnostics. Evaluate thermal performance under maximum load conditions given the 40 mΩ on-resistance. Consider the 20-SOIC footprint constraints during PCB layout. Verify compatibility with system voltage ranges between 6 V and 27 V before integration.

Power Management - Specialized Part Context

Manufactured by NXP USA Inc., formerly Freescale Semiconductor, this part belongs to the DHSS family. It succeeded earlier Motorola designs and remains relevant for legacy automotive systems. The device adheres to AEC-Q100 standards despite its current obsolete classification, maintaining relevance in maintenance and replacement scenarios.

Power Management - Specialized Replacement Considerations

The MC33289DWR2 offers an alternative reel packaging option for the same functional specifications. Verify pinout compatibility when substituting with other dual high-side switches from the NXP portfolio. Ensure thermal dissipation characteristics match the original design requirements during cross-referencing.