MC33287DW

Power Management - Specialized Overview

The MC33287DW is a dual low-side switch integrated circuit manufactured by NXP USA Inc., designed for contact monitoring applications. It operates within a supply voltage range of 7 V to 18 V and draws a supply current of 55 µA. The device supports an operating temperature range from -40°C to 125°C. It is housed in a 20-SOIC package with a width of 7.50 mm, suitable for surface mount mounting. The component interfaces between switch contacts and a microcontroller, featuring eight switch-to-battery or switch-to-ground sense monitors.

Power Management - Specialized Feature Summary

• Interfaces between switch contacts and a microcontroller
• Includes eight switch-to-battery or switch-to-ground sense monitors
• Dual low-side switch configuration

Power Management - Specialized Applications

• Contact monitor systems
• Microcontroller interface circuits
• Switch sensing applications

Power Management - Specialized Procurement Notes

Verify the specific suffix (e.g., DW vs DWR2) as it indicates packaging differences such as tape and reel quantities. Confirm RoHS compliance status, as some sources indicate non-compliance while others reference certification. Check part status, as listings may show obsolete or discontinued status. Ensure the supplier provides official datasheets matching the exact part number to avoid functional mismatches due to variant differences.

Power Management - Specialized Selection Notes

Select this component when a dual low-side switch with integrated contact monitoring is required for microcontroller interfacing. Consider the 20-SOIC package size for PCB layout constraints. Verify that the 7 V to 18 V supply range matches the system power architecture. Evaluate the -40°C to 125°C operating temperature range against environmental conditions. Confirm if the eight sense monitor channels meet the input requirements.

Power Management - Specialized Part Context

The MC33287 belongs to a family of power management ICs focused on specialized switching and monitoring functions. Variants like the MC33287DWR2 share the same core functionality but differ in packaging format. The component serves as a bridge between mechanical switches and digital logic, providing reliable signal transmission in automotive or industrial control environments where robust contact sensing is critical.

Power Management - Specialized Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing PCB footprints and electrical specifications before considering alternative components.