MC33771CTA1AER2

Overview

The MC33771CTA1AER2 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 with averaging capabilities, current measurement via an integrated coulomb counter, and temperature sensing. It supports isolated daisy chain communication using the MC33664 transceiver or standard SPI interfaces. The component includes onboard passive balancing MOSFETs and comprehensive diagnostic functions.

Feature Summary

• Supports isolated daisy chain communication with loopback capability for up to 63 nodes
• Features advanced voltage and temperature measurement with integrated averaging
• Includes onboard passive balancing transistors with programmable timers
• Provides high-accuracy current measurement with integrated coulomb counting

Applications

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

Procurement Notes

Verify that the specific suffix TA1AE corresponds to the required tape and reel packaging configuration and ensure compatibility with the intended manufacturing process. Confirm that the AEC-Q100 qualification status meets the project's reliability requirements for automotive or industrial deployment. Cross-reference the ordering part number with official NXP documentation to ensure correct revision level and availability.

Selection Notes

Select this model when a 14-channel architecture is required for high-voltage battery stacks exceeding 48 V. The MC33771C variant offers superior communication flexibility compared to the B series, including transformer isolation support and loopback functionality. Ensure the system design accommodates the LQFP-EP-64 package thermal dissipation needs and validates the 9.6 V to 61.6 V operating voltage range against the specific battery pack configuration.

Part Context

This component belongs to the MC33771C series of lithium-ion battery cell controllers from NXP Semiconductors. It is engineered specifically for advanced battery management systems requiring high precision and robust communication topologies. The C-series distinguishes itself by supporting transformer-isolated daisy chains and loopback networks, enhancing system redundancy and scalability in complex multi-node battery architectures.

Replacement Considerations

The MC33771BTA1AE serves as a related variant within the same family but lacks transformer isolation and loopback capabilities. When substituting, verify that the application does not require the advanced communication features unique to the C-series. Ensure pinout compatibility and confirm that the reduced node limit of the B-series aligns with the system topology requirements.