MC33775ATA1AER2

Overview

The MC33775ATA1AER2 is a 14-channel lithium-ion battery cell controller IC designed for automotive and industrial applications. It supports ASIL D functional safety for voltage, module voltage, and temperature measurements. The device measures differential high-precision cell voltages and temperatures, offering passive cell balancing with up to 300 mA per channel. It operates within a supply voltage range of 9 V to 65 V and features isolated daisy chain or SPI communication interfaces.

Feature Summary

• Provides ASIL D support for critical measurement functions including cell voltage, module voltage, and temperature monitoring.
• Integrates extensive passive cell balancing capabilities with integrated diagnostics and multiple control modes.
• Supports flexible communication through isolated daisy chain or standard SPI interfaces for host MCU connectivity.

Applications

• Hybrid electric vehicle (HEV) battery systems
• Electric vehicle (EV) battery management
• Industrial energy storage systems

Procurement Notes

Verify the specific suffix 'AER2' indicates tape-and-reel packaging versus tray options when sourcing. Confirm current lifecycle status as some variants in this series are marked end-of-life. Ensure compatibility with required isolation levels for the target application architecture before finalizing procurement.

Selection Notes

Select this component for designs requiring ASIL D compliance with moderate channel counts. Compare against MC33774A if higher channel density is needed. Evaluate system topology requirements to determine if isolated daisy chain or SPI best suits the host microcontroller interface constraints.

Part Context

This part belongs to the NXP MC3377x family of advanced battery junction box controllers. These devices integrate sensing, balancing, and communication into a single package to reduce bill of materials complexity. The MC33775 variant specifically targets applications needing 14 channels with robust safety features.

Replacement Considerations

MC33775ATA1AE is a tray-packaged equivalent of the same silicon. For higher channel counts, consider the MC33774A series. Verify pinout and software compatibility when migrating between different revisions within the MC3377x family.