MC33912BAC

Power Management - Specialized Overview

The MC33912BAC is a LIN System Basis Chip from Freescale Semiconductor, integrating power management and interface functions. It features a DC motor pre-driver with current sensing capabilities. The device operates within a voltage range of 5.5V to 18V and supports the LIN Protocol Specification 2.0 and 2.1. It includes full SPI readable diagnostics and a selectable timing watchdog for error detection. The component is housed in a 32-LQFP (7x7) package, suitable for surface mount technology, and functions across an operating temperature range of -40°C to 125°C.

Power Management - Specialized Feature Summary

• Integrates LIN communication interface with DC motor pre-driver and current sensing
• Provides full SPI readable diagnostics and selectable timing watchdog for system monitoring
• Supports LIN Protocol Specification 2.0 and 2.1 standards

Power Management - Specialized Applications

• Automotive body control modules
• LIN-based network systems requiring integrated power management
• DC motor control applications in vehicle electronics

Power Management - Specialized Procurement Notes

Verify the manufacturer designation, as NXP Semiconductors acquired Freescale. Confirm the specific suffix 'BAC' corresponds to the required package and temperature grade. Ensure compatibility with existing LIN protocol versions 2.0 or 2.1 in your design. Check for RoHS compliance status if required by your manufacturing specifications.

Power Management - Specialized Selection Notes

Select this component when a combined LIN transceiver and power management solution is needed for automotive applications. It is appropriate for designs requiring integrated DC motor pre-driving with current sensing. Consider the 32-LQFP package size and thermal performance for your PCB layout. Verify that the 5.5V to 18V input range matches your vehicle's electrical system requirements.

Power Management - Specialized Part Context

This part belongs to the MC3391x family of System Basis Chips designed for automotive LIN networks. These chips integrate microcontroller interfaces, power supplies, and driver outputs to reduce component count. The MC33912 variant specifically adds DC motor pre-driver functionality, distinguishing it from simpler LIN transceivers or other variants in the series without motor drive capabilities.

Power Management - Specialized Replacement Considerations

Check for direct pin-to-pin replacements within the MC3391x family, such as the MC33911BAC, noting differences in integrated features like the absence of DC motor pre-drivers in some variants. Verify functional equivalence regarding LIN protocol support and diagnostic capabilities before substitution.