MC33771CTP2AER2

Overview

The MC33771CTP2AER2 is a premium 8-channel Li-ion battery cell controller IC from NXP, designed for automotive and industrial applications. It operates within a supply voltage range of 9.6 V to 61.6 V, with a 75 V transient tolerance. The device features integrated ADC conversions for differential cell voltages and currents, supporting up to 256 samples for averaging, alongside coulomb counting and temperature measurements. It includes onboard passive balancing MOSFETs capable of 300 mA current. Communication is supported via standard SPI at 4 Mbps or transformer-isolated daisy chain (with MC33664) at 2.0 Mbps, accommodating up to 63 nodes per chain with loopback support. The component is housed in an LQFP-EP-64 package.

Feature Summary

• Supports advanced voltage and temperature measurement with integrated averaging capabilities for high precision.
• Features embedded passive balancing transistors with programmable timers and diagnostic functions.
• Enables isolated daisy chain communication with loopback support for robust system architecture.
• Complies with ISO 26262 standards up to ASIL D safety capability and AEC Q-100 qualification.

Applications

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

Procurement Notes

Verify the specific suffix 'R2' indicates reel packaging configuration as documented in official ordering information. Confirm that the 'CTP2' designation corresponds to the premium variant with 8 channels and full feature set including averaging and loopback. Ensure compatibility with the required isolation components like MC33664 for daisy chain operation. Check RoHS and REACH SVHC status certificates provided by NXP for environmental compliance requirements.

Selection Notes

Select this model for applications requiring premium battery management with high channel count flexibility and advanced diagnostic features. The inclusion of loopback support and extensive averaging options distinguishes it from basic variants. Consider the LQFP-EP-64 package for surface mount assembly needs. Validate that the 8-channel capacity aligns with the specific stack configuration requirements of the target design.

Part Context

This part belongs to the MC33771C series, which offers enhanced features compared to the MC33771B series, such as sample averaging and loopback support. It is distinct from the MC33772 series, which targets different voltage ranges. The MC33771C series is designed for high-voltage battery management systems exceeding 800 V in some configurations, ensuring robust performance in demanding automotive environments.

Replacement Considerations

Direct substitutes include other MC33771CTP2AE variants with different packaging options. For functional equivalence with similar feature sets, consider the MC33771CTP1AE series. Verify pinout and software compatibility when transitioning between closely related models within the same family.