MC33889DWR2

Specialized Overview

The MC33889DWR2 is a System Basis Chip (SBC) from NXP Semiconductors, designed for automotive microcontroller-based systems. It integrates a fully protected fixed 5.0 V low-dropout regulator with 200 mA capability, an external PNP-controlled second regulator, and a low-speed fault-tolerant CAN transceiver compatible with CAN 2.0 A/B protocols. The device supports Normal, Standby, Stop, and Sleep modes, featuring programmable watchdogs, SPI control, and high-side power switches. Powered by SMARTMOS technology, it operates within a supply voltage range of 5.5 V to 18 V and functions across a temperature range of -40 °C to 125 °C.

Specialized Feature Summary

• Integrates a fully protected 5.0 V low-dropout regulator with current limiting and overtemperature prewarning.
• Includes a built-in low-speed 125 kbps fault-tolerant CAN physical interface for module-to-module communication.
• Features four operational modes (Normal, Standby, Stop, Sleep) with low standby current consumption.
• Provides an internally switched high-side power supply output with two wake-up inputs.

Specialized Applications

• Power management in microcontroller-based automotive systems
• Module-to-module communications via CAN bus
• Control systems requiring integrated diagnostics and protection

Specialized Procurement Notes

Verify the 'R2' suffix indicates tape and reel packaging as specified in the ordering information. Confirm the component status is End of Life before finalizing procurement plans. Ensure compatibility with RoHS3 and REACH regulations. Check moisture sensitivity level requirements for storage and handling procedures.

Specialized Selection Notes

Select the MC33889D variant specifically for its defined differential receiver thresholds and loop time characteristics compared to the B version. Verify that the 28-SOIC package dimensions meet the PCB layout constraints. Ensure the application requires the specific 125 kbps fault-tolerant CAN interface capabilities provided by this SBC.

Specialized Part Context

The MC33889DWR2 belongs to the MC33889 family of System Basis Chips. It is functionally similar to the MC33889BPEG but features distinct electrical parameters for the CAN transceiver section. The 'D' designation identifies the specific device variation within the series, while the 'WR2' suffix denotes the tape and reel packaging format.

Specialized Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. The datasheet notes that the MC33889D and MC33889B versions are nearly identical but have variations in CAN transceiver characteristics. Designers should verify if the MC33889BPEG meets the specific threshold requirements if considering alternatives.