MC33772BSP2AER2

Overview

The MC33772BSP2AER2 is a six-channel lithium-ion battery cell controller IC manufactured by NXP Semiconductors. It operates within a supply voltage range of 6 V to 30 V, with transient tolerance up to 40 V in daisy-chain mode. The device features six dedicated battery voltage measurement channels and one total stack voltage input, achieving a maximum total voltage measurement error of 0.8 mV. It includes seven ADC/GPIO/temperature sensor inputs and integrates a current sensor with a programmable gain amplifier for synchronized advanced current measurement. The integrated coulomb counter supports precise charge tracking from milliamps to kiloamps with ±0.5% accuracy.

Feature Summary

• Six-channel differential voltage measurement with integrated average capability for low bill-of-materials design
• Synchronized current measurement with integrated PGA and coulomb counter for high-precision ampere-hour tracking
• Onboard passive balancing with 300 mA low Rdson MOSFETs and programmable timers for each channel
• Isolated Transformer Physical Layer (TPL) communication supporting up to 15 nodes in a daisy-chain topology

Applications

• Hybrid Electric Vehicle (HEV) and Electric Vehicle (EV) battery management systems
• High-voltage battery packs for automotive applications
• Energy Storage Systems (ESS)
• Uninterruptible Power Supply (UPS) systems

Procurement Notes

Verify the specific suffix 'SP2' against official NXP documentation to confirm package type and tape/reel specifications. Ensure compatibility with the required communication interface, as this model utilizes TPL rather than SPI. Confirm that the 6-channel configuration meets the system requirements, noting that other variants in the family offer different channel counts or communication protocols.

Selection Notes

Select this component for applications requiring isolated daisy-chain communication via the Transformer Physical Layer. It is suitable for designs needing integrated passive balancing and coulomb counting without external microcontrollers for basic cell monitoring. Consider the 6-channel limit; if more cells are required, evaluate higher-channel alternatives like the MC33771 series. Verify ASIL D compliance needs against the specific safety manual.

Part Context

This part belongs to the MC33772B family of battery cell controllers designed for automotive and industrial environments. It is part of NXP's broader BMS portfolio, often used in conjunction with transceivers like the MC33664 for isolation. The device is AEC-Q100 qualified and supports ISO 26262 functional safety standards, targeting robust performance in harsh operating conditions.

Replacement Considerations

Direct replacements include other MC33772B variants with different suffixes indicating package or reel differences. For increased channel capacity, consider the MC33771C series. For SPI-based communication instead of TPL, evaluate the MC33772C series.