MC33772CTA2AER2

Overview

The MC33772CTA2AER2 is a six-channel lithium-ion battery cell controller IC from NXP Semiconductors, designed for automotive and industrial applications. It operates within a supply voltage range of 6V to 30V with transient tolerance up to 40V. The device features six battery voltage measurement channels with a maximum total stack voltage measurement error of 0.8mV and seven ADC/GPIO/temperature sensor inputs. It integrates a current sensor with PGA offering ±0.5% accuracy from milliamps to kiloamps, alongside an integrated Coulomb counter. Communication is supported via isolated 2.0Mbps TPL or 4Mbps SPI interfaces. It includes onboard 300mA passive battery balancing MOSFETs and supports ISO 26262 ASIL D safety capabilities.

Feature Summary

• Supports management of 3 to 6 battery cells with configurable average voltage measurement for low BOM designs.
• Integrates high-precision current sensing with programmable gain amplifier and built-in Coulomb counting functionality.
• Features onboard 300mA low Rdson passive battery balancing MOSFETs with diagnostic capabilities and sleep mode support.
• Provides isolated differential communication via Transformer Physical Layer (TPL) or standard SPI interface.

Applications

• Automotive HEV and EV battery management systems
• Industrial energy storage systems (ESS)
• Uninterruptible power supply (UPS) systems

Procurement Notes

Verify the specific suffix 'R2' indicates tape and reel packaging when sourcing. Confirm AEC-Q100 qualification status for automotive deployment requirements. Ensure compatibility with the host MCU's SPI or TPL interface protocols. Check for RoHS compliance documentation prior to integration into regulated assemblies.

Selection Notes

Select this component for applications requiring advanced cell monitoring with integrated current sensing and Coulomb counting. The TPL interface is suitable for daisy-chaining multiple nodes in complex battery architectures. Consider the ASIL D capability for safety-critical automotive environments. Evaluate the 48-pin LQFP package constraints against PCB layout requirements.

Part Context

This part belongs to the MC33772C series of battery cell controllers, which are optimized for high-performance lithium-ion battery management. It serves as an alternative to previous generations like the MC33772B by offering enhanced communication flexibility and average voltage measurement features. The device is widely used in modern electric vehicle platforms and stationary storage solutions.

Replacement Considerations

MC33772CTP2AE is a verified substitute within the same family offering similar functional capabilities.

FAQ

Does the MC33772CTA2AER2 support passive battery balancing?

Yes, it includes onboard 300mA low Rdson passive battery balancing MOSFETs with diagnostic functions and programmable timers.

What is the maximum number of nodes supported in a TPL daisy-chain?

The device supports up to 63 nodes in a single TPL daisy-chain topology with ring-back support.