MC33772CTC0AER2

Overview

The MC33772CTC0AER2 is a six-channel lithium-ion battery cell controller IC manufactured by NXP Semiconductors. It operates within a supply voltage range of 6V to 30V and supports transient voltages up to 42V in daisy-chain mode. The device features six dedicated battery voltage measurement channels with a maximum total stack voltage measurement error of 0.8mV, alongside seven ADC/GPIO/temperature sensor inputs. It integrates a current sensor with a programmable gain amplifier for precise current monitoring from milliamps to kiloamps, including an integrated coulomb counter. Communication is facilitated via isolated daisy-chain or standard SPI interfaces.

Feature Summary

• Supports isolated transformer physical layer (TPL) communication with up to 63 nodes in a ring topology
• Integrates on-board passive battery balancing MOSFETs with diagnostic capabilities and programmable timers
• Provides advanced fault verification including over-voltage, under-voltage, over-temperature, and open-circuit detection
• Complies with ISO 26262 standards supporting ASIL D functional safety capability

Applications

• Hybrid electric vehicle (HEV) and electric vehicle (EV) high-voltage battery packs
• Energy storage systems (ESS) and uninterruptible power supply (UPS)
• Battery junction box (BJB) controllers for automotive applications
• Industrial battery management system designs requiring high reliability

Procurement Notes

Verify the specific suffix 'R2' indicates reel packaging when sourcing components. Confirm that the part number corresponds to the active MC33772C series rather than the legacy MC33772B. Ensure compatibility with AEC-Q100 qualification requirements if deploying in automotive environments. Cross-reference datasheet revisions to confirm interface specifications match system design constraints.

Selection Notes

Select this component for applications requiring isolated communication between multiple battery cells without direct galvanic connection to the microcontroller. The MC33772CTC0AER2 is suitable for designs needing support for up to 63 nodes in a daisy-chain configuration. Consider the integrated coulomb counter and current sensing accuracy when designing systems requiring precise state-of-charge estimation. Verify thermal management requirements given the operating temperature range and internal power dissipation during balancing operations.

Part Context

This device belongs to the MC33772C family of battery cell controllers designed for demanding automotive and industrial environments. It serves as a key component in high-voltage battery management architectures, enabling safe and efficient monitoring of lithium-ion battery stacks. The C-series variant offers enhanced communication flexibility compared to previous generations, supporting both SPI and TPL protocols for scalable system integration.

Replacement Considerations

The MC33772BTC0AER2 is a related variant within the same product family but utilizes transformer coupling instead of capacitive/isolated TPL communication. Verify interface compatibility before substitution. Other members of the MC33772C series may offer different channel counts or feature sets; ensure functional equivalence regarding voltage measurement precision and safety ratings.