MC33981BPNA

Overview

The MC33981BPNA is a System Basis Chip (SBC) designed for automotive applications, integrating power management and communication interfaces. It features a high-speed CAN transceiver compliant with ISO 11898-2 and -5 standards, supporting baud rates up to 1 Mbps. The device includes multiple voltage regulators, including a main regulator for the MCU and auxiliary regulators for peripheral ICs. It provides comprehensive diagnostic capabilities, monitoring voltage, current, and temperature to ensure system reliability and functional safety in complex automotive electronic control units.

Feature Summary

• Integrated high-speed CAN transceiver with local and bus failure diagnostics
• Multiple voltage regulators for MCU and auxiliary peripherals
• Advanced diagnostic and monitoring circuits for system protection
• Support for multiple wake-up sources in low-power modes

Applications

• Automotive Electronic Control Units (ECUs)
• Body Control Modules (BCM)
• Gateway nodes in automotive networks
• Systems requiring robust CAN communication and power management

Procurement Notes

Verify the specific suffix 'BPNA' against official NXP documentation to confirm package type, temperature grade, and tape-and-reel specifications. Ensure compatibility with target PCB footprint and thermal requirements. Confirm that the device meets the functional safety standards required for the specific automotive application, such as ISO 26262 compliance levels if applicable.

Selection Notes

Select this SBC when a single-chip solution combining high-speed CAN connectivity with integrated power regulation and diagnostics is required. It is suitable for applications needing reliable communication in noisy automotive environments and simplified board design through integration of multiple functions. Consider its diagnostic features for systems requiring high availability and fault detection capabilities.

Part Context

The MC33981 belongs to NXP's family of System Basis Chips, which integrate power management and communication interfaces into a single component. These devices are designed to reduce bill-of-materials costs and simplify PCB layout for automotive ECUs by combining essential functions like voltage regulation, CAN/LIN transceivers, and diagnostics into one package.

Replacement Considerations

Check for direct pin-to-pin replacements within the MC339xx series or compatible SBC families from NXP. Verify that any substitute part maintains identical CAN transceiver performance, regulator outputs, and diagnostic features. Ensure the replacement supports the same package and thermal characteristics.