MC33908NAER2

Overview

The MC33908NAER2 is a System Basis Chip (SBC) from NXP Semiconductors, designed for automotive applications. It integrates multiple power supplies, including a DC/DC switching regulator delivering up to 1.5 A for the MCU core, and linear regulators for I/Os and auxiliary loads. The device features high-speed CAN and LIN physical interfaces compliant with ISO 11898-2/-5 and LIN 2.2 standards. Packaged in an LQFP48EP, it operates within a temperature range of -40°C to +125°C.

Feature Summary

• Integrates flexible DC/DC pre-regulator supporting Buck or Buck-Boost topologies for efficient energy management.
• Includes advanced functional safety measures designed for ASIL D applications with secured SPI interface.
• Features robust physical layers with high EMC immunity and ESD robustness for CAN and LIN interfaces.

Applications

• Electrical power steering systems
• Automotive electronic control units requiring high functional safety

Procurement Notes

Verify component authenticity through authorized distributors. Confirm package integrity and pin alignment upon receipt. Check datasheet revisions for any updates to electrical characteristics or pin assignments. Ensure storage conditions comply with moisture sensitivity levels specified in the manufacturing data. Validate part markings against official NXP documentation to prevent counterfeit risks.

Selection Notes

Select this SBC when designing systems requiring integrated power management and dual bus connectivity. It is suitable for applications needing a high-current core supply alongside isolated I/O regulation. Consider its ASIL D capability if functional safety certification is mandatory. Evaluate the need for Buck-Boost flexibility versus standard Buck topology based on input voltage variations.

Part Context

This component belongs to the MC33908 family of System Basis Chips. It serves as a central power and communication hub for microcontrollers in automotive environments. The NAER2 suffix indicates specific packaging and tape-and-reel configuration details consistent with NXP's standard ordering nomenclature for volume production.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material. Verify compatibility with existing PCB layouts and software drivers before considering alternative components.