MC33774ATP1AE

Overview

The MC33774ATP1AE is an 18-channel Li-Ion battery cell controller IC designed for high-voltage applications. It supports a supply voltage range of 9 V to 90 V and operates with a 5 V working power supply. The device features an output current capability of 21 mA and is housed in an LQFP-64 package suitable for SMD/SMT installation. It functions within a temperature range of -40 C to +125 C and holds ASIL D certification.

Feature Summary

• Supports monitoring of up to 18 battery cells with integrated passive balancing capabilities
• Complies with ISO 26262 standards achieving ASIL D safety level for critical measurements
• Utilizes NXP's proprietary Transformer Physical Layer (TPL) protocol for isolated daisy chain communication
• Provides advanced diagnostics including overvoltage, undervoltage, and thermal fault verification

Applications

• High Voltage Battery Management Systems (HVBMS) for electric vehicles
• Hybrid Electric Vehicle (HEV) battery modules
• Energy Storage System (ESS) cell monitoring units
• Industrial battery stacks requiring functional safety compliance

Procurement Notes

Verify the specific ordering suffix 'TP1' confirms the active status and ASIL D qualification. Ensure compatibility with the TPL communication protocol when integrating with gateway controllers like the MC33665. Confirm that the LQFP-64 package dimensions align with the target PCB layout requirements. Check for RoHS and REACH SVHC declarations as per the manufacturer's material declaration data.

Selection Notes

Select this component for systems requiring up to 18 series-connected lithium-ion cells. It is appropriate for designs needing ASIL D certified voltage and temperature measurement accuracy. Consider the 9 V to 90 V operating range when designing the power supply architecture. Evaluate the need for isolated daisy chain communication versus standard SPI interfaces based on system complexity.

Part Context

This part belongs to the MC33774 family of battery cell controllers from NXP Semiconductors. It serves as a Cell Monitoring Unit (CMU) in hierarchical BMS architectures. The device complements gateway ICs like the MC33665 to form complete high-voltage battery management solutions. It is distinct from lower channel count variants such as the MC33771 or MC33775.

Replacement Considerations

MC33774ATA1AE is listed as End of Life. MC33774ASP1AE is an active alternative within the same package type.