MC33772BSA1AER2

Overview

The MC33772BSA1AER2 is a six-channel lithium-ion battery cell controller IC designed for automotive and industrial applications. It manages three to six battery cells and supports advanced voltage and temperature measurements with a maximum total stack voltage measurement error of 0.8 mV. The device features integrated current sensing with programmable gain amplifiers, achieving ±0.5% accuracy from milliamps to kiloamps, alongside an onboard coulomb counter. It includes passive balancing MOSFETs with diagnostic capabilities and supports isolated Transformer Physical Layer (TPL) communication at up to 2.0 Mbps or SPI at 4.0 Mbps. Operating within a supply voltage range of 6 V to 30 V, it complies with AEC-Q100 standards.

Feature Summary

• Supports management of three to six battery cells with integrated average battery voltage measurement capabilities.
• Features onboard passive balancing MOSFETs with diagnostic functions and programmable timers for each channel.
• Provides isolated differential communication via Transformer Physical Layer (TPL) or standard SPI interfaces.
• Includes synchronized voltage, current, and temperature measurements with integrated coulomb counting.

Applications

• Hybrid electric vehicle (HEV) and electric vehicle (EV) battery systems
• Energy storage systems (ESS)
• Uninterruptible power supply (UPS) systems

Procurement Notes

Verify the specific suffix 'AER2' indicates the reel packaging format when ordering. Confirm compatibility with the target system's communication protocol requirements, specifically the TPL interface limitations compared to other variants in the family. Ensure the design accounts for the moisture sensitivity level and reflow soldering profiles specified in the official datasheet to maintain component integrity during assembly.

Selection Notes

Select this model for applications requiring isolated TPL communication rather than standard SPI. Verify that the system architecture supports the specific node addressing and topology constraints defined for the B-series variant. Consider the thermal performance requirements given the operating temperature range and the power dissipation characteristics of the integrated balancing circuitry during active discharge cycles.

Part Context

This component belongs to the MC33772B series of battery cell controllers manufactured by NXP Semiconductors. It is part of a broader portfolio designed for high-reliability battery management in demanding environments. The device integrates multiple monitoring and control functions into a single package to reduce bill of materials complexity while maintaining high precision and safety standards required for automotive certification.

Replacement Considerations

MC33772CTC0AER2