MC33298DWR2

Overview

The MC33298DWR2 is a power switch IC featuring eight N-channel outputs in a 24-SOIC package. It operates with a supply voltage of 2.5V to 4.5V and supports load voltages from 9V to 26.5V. The device provides a maximum output current of 1A per channel with a typical on-resistance of 350 milliohms. Control is managed via an SPI interface, offering a 1:8 input-to-output ratio. It includes comprehensive fault protection mechanisms such as fixed current limiting, open-load detection, overtemperature shutdown, and overvoltage protection. The component functions within a junction temperature range of -40°C to 150°C.

Feature Summary

• Eight-channel low-side power switching capability controlled through a serial peripheral interface.
• Integrated diagnostic features including open-load detection for both high and low sides.
• Robust protection against overcurrent, overtemperature conditions, and overvoltage events.

Applications

• Automotive body electronics control modules
• Lighting distribution systems
• General-purpose load drivers in industrial environments

Procurement Notes

Verify the specific suffix DWR2 indicates tape-and-reel packaging, distinct from the DW variant. Confirm RoHS compliance status as historical data may vary. Check for active lifecycle status or obsolescence notices before finalizing procurement plans. Ensure SPI protocol compatibility with the host microcontroller.

Selection Notes

Select this component when eight independent low-side switches are required with integrated diagnostics. The SPI interface allows for flexible configuration and status reading. Ensure the system voltage remains within the specified 9V to 26.5V load range. Verify thermal management requirements given the 150°C junction temperature limit.

Part Context

This part belongs to the MC33298 family of power switches designed for automotive and industrial applications. It serves as a robust solution for managing multiple loads efficiently. The device integrates advanced protection features to enhance system reliability. It is commonly used in scenarios requiring precise control and monitoring of electrical loads.

Replacement Considerations

Check for direct pin-compatible alternatives within the same product family. Verify that any substitute maintains identical SPI command sets and fault response behaviors. Ensure voltage and current ratings meet or exceed original specifications.