MC33771BTP1AE

Overview

The MC33771BTP1AE is a 14-channel Li-ion battery cell controller IC designed for automotive and industrial applications. It operates within a supply voltage range of 9.6 V to 61.6 V, with transient tolerance up to 75 V. The device features integrated ADC conversions for differential cell voltages and currents, coulomb counting, and temperature measurements. It includes embedded balancing transistors and supports standard SPI and transformer-isolated daisy chain communication via the MC33664. The component provides a 5 V output with a maximum current of 5 mA.

Feature Summary

• Supports synchronized advanced current measurement with integrated coulomb counter and programmable passive balancing MOSFETs.
• Enables isolated daisy chain or SPI communication for scalable high-voltage battery management system architectures.
• Provides comprehensive fault diagnostics including overvoltage, undervoltage, overtemperature, and short-circuit verification.

Applications

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

Procurement Notes

Verify that the specific ordering suffix matches the required package type and thermal performance specifications. Confirm compliance with AEC-Q100 standards if automotive qualification is mandatory. Ensure the procurement channel provides access to the necessary non-disclosure agreement documentation for detailed safety manuals and application hints.

Selection Notes

Select this model when designing systems requiring up to 14 series-connected lithium-ion cells. Evaluate the need for transformer-isolated communication interfaces versus standard SPI based on system isolation requirements. Consider the integrated balancing capabilities and diagnostic features to reduce external component count and simplify board layout complexity.

Part Context

This component belongs to the MC33771 family of battery cell controllers manufactured by NXP Semiconductors. It is engineered for high-voltage applications exceeding 800 V stacks. The device integrates analog front-end processing with digital control logic, serving as a central node in complex battery management architectures.

Replacement Considerations

MC33771C variants offer alternative channel configurations. MC33772 models provide reduced channel counts for lower voltage applications. Verify pinout compatibility and software driver support before substituting with other members of the MC3377x series.