MCZ33903B5EKR2

Specialized Overview

The MCZ33903B5EKR2 is a System Basis Chip (SBC) from the second-generation MC33903 family, designed for automotive body and powertrain applications. It integrates an enhanced high-speed CAN interface compliant with ISO11898-2 and -5 standards, supporting data rates from 40 kB/s to 1.0 MB/s. The device features a configurable MCU voltage regulator (VDD) outputting 5.0 V with a maximum current of 150 mA. Operating voltage ranges from 5.5 V to 28 V, with a maximum input voltage of 27 VDC and 40 V load dump tolerance. It operates within a temperature range of -40 °C to +125 °C and utilizes a SOIC-32 package.

Specialized Feature Summary

• Integrates an enhanced high-speed CAN physical layer with local and bus failure diagnostics and fail-safe operation modes.
• Provides a flexible MCU voltage regulator (VDD) that can be configured for 5.0 V or 3.3 V outputs.
• Supports ultra-low power consumption in sleep modes with multiple wake-up sources including CAN/LIN buses and I/O transitions.
• Includes a secured SPI interface with watchdog capability and advanced diagnostic monitoring for system reliability.

Specialized Applications

• Body controllers and gateway modules
• Seat modules and door control units
• Lighting control modules and HVAC systems
• Safety and chassis applications such as electric parking brakes

Specialized Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to ensure correct pinout and feature configuration. Confirm RoHS compliance status and lead times directly with authorized distributors. Ensure the selected variant matches the required VDD output voltage and LIN interface count for the target application design.

Specialized Selection Notes

Select this component when a dedicated SBC with integrated high-speed CAN is required for automotive ECU designs. The B-version suffix indicates updated oscillator performance and improved current consumption characteristics compared to earlier revisions. Consider the 150 mA internal regulator limit; use external ballast transistors if higher current scalability is needed.

Specialized Part Context

This part belongs to the MC33903/4/5 family of System Basis Chips, which are optimized as companion chips for microcontrollers in automotive environments. The family offers scalable power management and communication interfaces, allowing designers to maintain pin compatibility across different feature sets while adapting to specific body, safety, or powertrain requirements.

Specialized Replacement Considerations

MCZ33903BS5EK/R2: Single LIN interface variant with similar power specifications.

Specialized FAQ

What is the maximum output current for the MCU voltage regulator?

The internal MCU voltage regulator (VDD) provides up to 150 mA. Higher currents up to 300 mA can be achieved by utilizing an optional external PNP ballast transistor.

Does the MCZ33903B5EKR2 include LIN interfaces?

No, the standard MC33903 variant does not include integrated LIN transceivers. Variants ending in 'D' or 'S' (e.g., MCZ33903D or MCZ33903S) provide dual or single LIN interfaces respectively.

What protection features are included for the CAN interface?

The device includes local and bus failure diagnostics, protection mechanisms, and a fail-safe operation mode compliant with ISO11898-2 and -5 standards.