MC33771BTP2AE

Overview

The MC33771BTP2AE 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, supporting up to 75 V transients. The device features ADC conversions for differential cell voltages and currents, coulomb counting, and temperature measurements. It includes embedded balancing transistors and comprehensive diagnostics. Communication with the MCU is supported via standard SPI or transformer-isolated daisy chain using the MC33664.

Feature Summary

• Supports high-precision ADC conversion for differential cell voltages, currents, and temperature monitoring.
• Integrates onboard passive balancing MOSFETs with dedicated timers and diagnostic capabilities.
• Enables isolated daisy chain communication via MC33664 or direct SPI interface for data processing.

Applications

• Hybrid Electric Vehicles (HEV)
• Electric Vehicles (EV)
• Energy Storage Systems (ESS)
• Uninterruptible Power Supply (UPS) systems

Procurement Notes

Verify the specific suffix 'TP2' against official NXP documentation to confirm tape-and-reel packaging configuration and lot traceability requirements. Ensure compatibility with MPC5xxx 32-bit MCU families before integration. Confirm functional safety certification levels align with project ISO 26262 targets.

Selection Notes

Select this component for high-voltage battery management systems requiring extensive channel coverage. It is suitable for designs needing integrated current sensing and coulomb counting without external discrete components. Consider the isolation requirements when choosing between SPI and daisy chain communication methods.

Part Context

This part belongs to the MC33771 series of advanced lithium-ion battery cell controllers. It is engineered for robust performance in demanding environments, offering ASIL D safety capability. The series supports scalable architectures from low-voltage 48V systems to high-voltage configurations exceeding 800V.

Replacement Considerations

MC33771BTA1AE

FAQ

What is the maximum transient voltage support?

The device supports a maximum transient voltage of 75 V while operating within the 9.6 V to 61.6 V supply range.

Does the IC support balancing during sleep mode?

Yes, the device supports balancing in sleep mode with programmable balancing timers for each MOSFET.