MC33771BTP2AER2

Overview

The MC33771BTP2AER2 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 passive balancing MOSFETs supporting up to 300 mA per channel. It includes advanced voltage and temperature measurement capabilities, an integrated current sensor with PGA, and a coulomb counter. Communication is supported via standard SPI or transformer-isolated daisy chain using the MC33664 transceiver. The component is housed in an LQFP-EP-64 package and complies with AEC-Q100 standards.

Feature Summary

• Integrated 14-cell voltage measurement channels with total stack voltage monitoring and seven ADC/GPIO/temperature sensor inputs.
• Embedded low Rdson passive cell balancing MOSFETs with diagnostics and programmable timers for sleep mode operation.
• Supports isolated daisy chain communication at 2.0 Mbps via twisted pair or 4 Mbps SPI for MCU interfacing.
• Compliant with ISO 26262 functional safety standards, offering ASIL D capability with comprehensive fault verification.

Applications

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

Procurement Notes

Verify the specific suffix 'TP2AER2' against official NXP documentation to confirm tape-and-reel packaging and lead-free status. Ensure compatibility with MPC5xxx MCU families if utilizing the isolated daisy chain architecture. Confirm that the AEC-Q100 qualification meets the thermal and reliability requirements for the intended automotive or industrial environment before finalizing procurement.

Selection Notes

Select this component for high-voltage battery management systems requiring 14 channels of cell monitoring. It is suitable for designs needing integrated passive balancing and robust functional safety compliance. Consider the MC33664 transceiver for isolated communication needs. Evaluate the trade-off between the integrated current sensing accuracy and external component count compared to discrete solutions.

Part Context

This part belongs to the MC33771C series of Li-ion battery cell controllers from NXP Semiconductors. It is engineered for premium battery management applications in electric mobility and stationary storage. The device integrates analog front-end functions with digital control interfaces, simplifying the hardware design for complex battery packs while ensuring high precision and safety.

Replacement Considerations

The MC33771C is the direct successor variant within the same family. Verify pinout and software compatibility when migrating from the MC33771B version. No other cross-model substitutes are officially confirmed in the provided data.

FAQ

Does the MC33771 support transformer-isolated communication?

Yes, it supports transformer-isolated daisy chain communication at 2.0 Mbps when used with the MC33664 transceiver.

What is the maximum balancing current per channel?

The device features onboard passive balancing MOSFETs capable of handling up to 300 mA per channel.