MC33771BTP1AER2

Overview

The MC33771BTP1AER2 is a 14-channel Li-ion battery cell controller IC designed for automotive and industrial applications. It operates within a supply voltage range of 9.6 V to 61.6 V, with support for 75 V transients. The device features advanced ADC conversions for differential cell voltages and currents, integrated coulomb counting, and temperature measurement. It includes embedded balancing transistors and diagnostics to simplify application design. Communication with the MCU is supported via standard SPI or transformer-isolated daisy chain using the MC33664.

Feature Summary

• Supports synchronized advanced current measurement with integrated PGA and ±0.5% accuracy across milliamp to kiloamp ranges.
• Features onboard passive balancing with 300mA low Rdson MOSFETs and programmable timers for sleep mode operation.
• Provides isolated communication interfaces including 2.0 Mbps transformer-isolated daisy chain and 4 Mbps SPI.
• Includes comprehensive diagnostic capabilities for OV/UV, OT/UT, and OC faults with sleep mode monitoring.

Applications

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

Procurement Notes

Verify the specific suffix 'TP1' against official NXP documentation to confirm package type and reel quantity specifications. Ensure compatibility with MPC5xxx 32-bit MCU families as stated in technical references. Confirm AEC-Q100 qualification status and ISO 26262 ASIL D safety level requirements for your specific application context before finalizing procurement.

Selection Notes

Select this component for high-voltage battery management systems requiring precise synchronization of voltage and current measurements. The MC33771B variant supports up to 14 channels and transformer isolation, distinguishing it from the MC33771C which offers higher node counts but lacks transformer coupling. Consider the 15-year product longevity plan for long-term design stability.

Part Context

This part belongs to the MC33771 family of Li-ion battery cell controllers from NXP Semiconductors. It is specifically engineered for demanding automotive and industrial environments. The 'B' suffix indicates the variant supporting transformer-isolated daisy chain communication, whereas other variants may differ in channel count or isolation methods. It serves as a core component in Battery Cell Controller Units (CCU).

Replacement Considerations

MC33771CTP1AER2 is a confirmed substitute within the same family, offering similar functionality but potentially differing in isolation support or node capacity. Verify pinout and software compatibility when transitioning between B and C series variants.