MC33772BSP1AE

Overview

The MC33772BSP1AE is a six-channel lithium-ion battery cell controller IC designed for automotive and industrial applications. It features six voltage measurement channels with a maximum total stack voltage measurement error of 0.8 mV, seven ADC/GPIO/temperature sensor inputs, and integrated synchronous current measurement with ±0.5% accuracy. The device includes an on-board coulomb counter and passive balancing MOSFETs rated at 300 mA. It supports isolated daisy-chain communication at 2.0 Mbps or SPI at 4 Mbps. Operating voltage ranges from 5.0 V to 30 V, with transient tolerance up to 42 V. The component is housed in a 48-lead LQFP package.

Feature Summary

• Integrated high-precision voltage and temperature measurement with advanced diagnostic capabilities
• Synchronous current sensing with integrated programmable gain amplifier and coulomb counting
• On-board passive cell balancing with dedicated timers and fault detection
• Dual-mode communication supporting isolated differential daisy-chain or standard serial peripheral interface

Applications

• Hybrid electric vehicle (HEV) and electric vehicle (EV) battery packs
• Energy storage systems (ESS) and uninterruptible power supply (UPS)
• Electric bicycle and scooter battery management
• Industrial automation and robotics battery control

Procurement Notes

Verify the specific suffix 'S' indicates the 48-lead LQFP package variant distinct from other packaging options. Confirm ISO 26262 ASIL D capability requirements align with system design goals. Check for end-of-life status as some sources indicate obsolescence for certain variants. Ensure compatibility with MC33664 transceivers for daisy-chain topologies. Validate RoHS and REACH compliance documentation prior to integration.

Selection Notes

Select this model for applications requiring six-cell monitoring with high measurement precision. Consider the 48-lead LQFP package constraints for PCB layout and thermal management. Evaluate the need for isolated daisy-chain versus SPI based on MCU interface availability. Assess the 300 mA balancing current against cell capacity requirements. Verify functional safety documentation meets target ASIL levels for the specific deployment environment.

Part Context

The MC33772B series serves as a core component in NXP's battery management ecosystem, often paired with the MC33664 transceiver for scalable high-voltage architectures. It complements junction box monitors like the MC33777 for complete system protection. The device represents a mature solution for lithium-ion chemistry management, offering robust diagnostics and safety features required by modern electrification standards.

Replacement Considerations

MC33772CTP1AE: Active alternative with similar functionality but different package or tape-and-reel configuration. MC33772CTP2AE: Variant with potential pinout or feature differences; verify datasheet specifics. MC33771BSP1AE: Three-to-seven channel version; suitable if fewer cells are monitored. Cross-reference exact suffix codes for package and reeling details.