MC33772BTA1AE

Overview

The MC33772BTA1AE is a six-channel lithium-ion battery cell controller IC designed for automotive and industrial applications. It features integrated ADC conversion for differential voltage, current, and temperature measurements, alongside coulomb counting capabilities. The device supports standard SPI and transformer-isolated daisy-chain communication with microcontrollers via the MC33664 interface. It includes embedded passive balancing transistors and comprehensive diagnostic functions to simplify application design.

Feature Summary

• Integrated analog-to-digital converter for precise measurement of cell voltages, stack voltage, and current using an integrated programmable gain amplifier.
• Built-in passive cell balancing circuitry with low on-resistance MOSFETs and programmable timers for each channel.
• Supports both standard SPI and isolated daisy-chain communication protocols for data processing and control with MCU systems.
• Comprehensive diagnostic features including over-voltage, under-voltage, over-temperature, and open-circuit fault detection.

Applications

• Hybrid electric vehicle (HEV) battery management systems
• Electric vehicle (EV) high-voltage battery packs
• Energy storage systems (ESS)
• Uninterruptible power supply (UPS) units

Procurement Notes

Verify the specific suffix 'A1' against official NXP documentation to confirm package type and tape/reel specifications. Check current production status as some variants may be subject to obsolescence notices. Ensure compatibility with required isolation components such as the MC33664 if daisy-chain topology is utilized in the final design.

Selection Notes

Select this component for applications requiring high-precision cell monitoring and functional safety compliance up to ASIL D levels. Consider the operating voltage range and thermal requirements relative to the target battery architecture. Evaluate the need for isolated communication versus standard SPI based on system noise immunity and grounding constraints.

Part Context

This part belongs to the MC33772B series of battery cell controllers from NXP Semiconductors. It is engineered for robust performance in harsh environments, supporting long-term supply plans. The series is compatible with MPC5xxx 32-bit MCU families, facilitating integration into complex automotive and industrial control networks.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Consult NXP official channels for end-of-life notifications or recommended alternatives if this specific variant is discontinued.