MC33772BSA1AE

Overview

The MC33772BSA1AE is a battery cell controller IC designed for lithium-ion battery management in automotive and industrial applications. It supports up to six battery cells with integrated passive balancing, voltage measurement, and current sensing capabilities. The device features a 48-pin LQFP package and operates within a supply voltage range of 5 V to 30 V. It provides high-precision measurements including a total stack voltage error of 0.8 mV and supports communication via SPI or Transformer Physical Layer (TPL) interfaces.

Feature Summary

• Integrated passive cell balancing with diagnostic functions
• High-precision voltage and current measurement with built-in coulomb counter
• Supports isolated differential communication or standard SPI interfaces
• Comprehensive fault detection including over-voltage, under-voltage, and temperature monitoring

Applications

• Hybrid electric vehicle (HEV) battery systems
• Electric vehicle (EV) powertrain batteries
• Energy storage system (ESS) modules
• Uninterruptible power supply (UPS) units

Procurement Notes

Verify the specific suffix 'BSA1AE' against official NXP documentation to confirm pinout and feature set, as variations exist within the MC33772 family. Check component lifecycle status, as some variants are marked as obsolete or end-of-life. Ensure compatibility with required communication protocols and thermal requirements before procurement.

Selection Notes

Select this component for applications requiring precise cell monitoring and balanced charging in multi-cell lithium-ion packs. Consider the MC33772C series if AEC-Q100 qualification is mandatory, as the B-series may lack specific automotive certifications. Evaluate the need for isolated TPL communication versus standard SPI based on system architecture and noise immunity requirements.

Part Context

The MC33772BSA1AE belongs to the MC33772B series of battery cell controllers from NXP Semiconductors. This series is engineered for robust performance in demanding environments, offering integrated solutions for cell balancing and monitoring. It complements other NXP products like the MC33664 for isolated communication needs.

Replacement Considerations

Public confirmed substitute part numbers: None identified.