MC33771BSP2AER2

Overview

The MC33771BSP2AER2 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 onboard passive balancing transistors supporting up to 300 mA per channel. Communication is supported via standard SPI or transformer-isolated daisy chain using the MC33664. The component is housed in an LQFP-EP-64 package and complies with AEC-Q100 standards.

Feature Summary

• Advanced voltage and temperature measurement capabilities with high precision ADCs for cell monitoring.
• Integrated current sensing with programmable gain amplifier and coulomb counter for accurate state estimation.
• Onboard passive balancing MOSFETs with diagnostics and programmable timers for thermal management.
• Supports isolated daisy chain communication for scalable multi-unit battery stack configurations.

Applications

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

Procurement Notes

Verify the specific suffix 'S2' against official NXP documentation to confirm pinout and electrical parameter variations compared to standard variants. Ensure compatibility with the required isolation transceiver, typically the MC33664, for transformer-based communication networks. Confirm that the LQFP-EP-64 package footprint matches the target PCB design constraints.

Selection Notes

Select this model for high-voltage battery systems requiring 14 independent cell monitoring channels. It is suitable for designs needing integrated passive balancing and robust functional safety features compliant with ISO 26262. Consider the need for external isolation components if utilizing the transformer daisy chain interface instead of standard SPI.

Part Context

This component belongs to the MC33771 series of Li-ion battery cell controllers from NXP Semiconductors. The series is engineered for demanding automotive and industrial environments, offering scalable solutions for battery management systems. It complements other devices in the ecosystem, such as the MC33664 transceiver, to form complete hardware architectures for high-voltage battery packs.

Replacement Considerations

The MC33771CTP2AER2 is a related variant within the same family. Verify channel count and package compatibility before substitution. No other direct public substitutes are confirmed in the provided data.