MBMI7018TA1AE

Overview

The BMI7018 is an 18-channel Li-ion battery cell controller IC designed for industrial applications such as energy storage systems (ESS) and uninterruptible power supplies (UPS). It monitors up to 18 battery cells and 8 temperatures with configurable digital filtering. The device features a robust isolated 2.0 Mbit/s communication interface via Transmission Protocol Link 3 (TPL3) or SPI, supporting up to 62 nodes in a daisy chain with inductive or capacitive coupling. It provides onboard passive cell balancing with a peak current of 360 mA and operates within a supply voltage range of 9.0 V to 90 V, with a maximum transient of 94 V.

Feature Summary

• Supports monitoring of up to 18 battery cells and 8 temperature sensors with integrated configurable averaging for high-precision measurements.
• Features a robust isolated 2.0 Mbit/s two-wire twisted-pair differential daisy chain communication interface compatible with inductive or capacitive coupling.
• Provides onboard passive cell balancing with up to 360 mA peak current, including automatic odd/even sequencing and multiple control modes.
• Operates within a wide supply voltage range of 9.0 V to 90 V, accommodating maximum transients up to 94 V.

Applications

• Energy Storage Systems (ESS)
• Uninterruptible Power Supplies (UPS)
• Industrial Battery Management

Procurement Notes

Verify the specific suffix TA1AE against official NXP documentation to confirm exact package type, temperature grade, and tape/reel specifications. Ensure compatibility with the required isolation method (inductive or capacitive) for your system design. Confirm functional safety requirements align with SafeAssure® program availability if applicable.

Selection Notes

Select this component for industrial ESS and UPS applications requiring high channel count and robust isolation. Consider the 360 mA balancing capability and wide supply voltage range. Evaluate the need for TPL3 daisy chain connectivity versus direct SPI communication based on system topology and node count requirements.

Part Context

The BMI7018 belongs to NXP's portfolio of battery management solutions tailored for industrial environments. It is part of a family of cell controllers that emphasize long-term product longevity and integration ease. The device supports SafeAssure® for functional safety implementation, ensuring reliability in critical infrastructure applications.

Replacement Considerations

Consult official NXP substitution guides for PIN-to-PIN compatible alternatives. Verify electrical parameters and communication protocol support before replacing existing inventory.

FAQ

What communication interfaces does the BMI7018 support?

The BMI7018 supports a robust isolated 2.0 Mbit/s Transmission Protocol Link 3 (TPL3) daisy chain interface and a 4 Mbit/s Serial Peripheral Interface (SPI).

What is the maximum number of cells the BMI7018 can monitor?

The BMI7018 can monitor up to 18 battery cells simultaneously.

Does the BMI7018 support cell balancing?

Yes, it includes onboard passive cell balancing with a peak current of up to 360 mA and supports various balancing strategies including timer, voltage, temperature, and PWM-controlled modes.