MC33665ATU4AER2

Overview

The MC33665ATU4AER2 is a battery management communication gateway and TPL transceiver from NXP Semiconductors, housed in an LQFP-48 package. It routes messages from up to four independent TPL (isolated daisy chain) ports to standard protocols including SPI, CAN FD, and UART. The device supports SPI data rates up to 10 Mbit/s and CAN FD rates up to 5 Mbit/s. It features message buffering for traffic handling and supports daisy chains at 2 Mbit/s. Compatible with MC33771C and MC33772C cell controllers, it operates between -40°C and +125°C.

Feature Summary

• Routes proprietary isolated TPL daisy chain messages to standard MCU interfaces like SPI, CAN FD, and UART
• Provides four independent TPL ports with message buffering for synchronized traffic handling
• Supports high-speed SPI interface up to 10 Mbit/s and CAN FD interface up to 5 Mbit/s
• Compatible with MC33771C and MC33772C battery cell controllers

Applications

• Automotive Battery Management Systems (BMS)
• Industrial Data Buses and Battery Management
• E-bikes and E-scooters
• Energy Storage Systems (ESS)

Procurement Notes

Verify component status carefully as the MC33665ATU4AER2 is designated as End-of-Life (EOL). Manufacturers typically discontinue such components, meaning new production has ceased. Sourcing should focus on remaining stock or authorized distributors holding legacy inventory. Engineering teams must initiate replacement part qualification immediately to ensure supply continuity for ongoing projects.

Selection Notes

Select this component when designing systems requiring isolation between cell controllers and the main microcontroller via NXP's proprietary TPL protocol. It is suitable for applications needing conversion of daisy chain data to SPI, CAN FD, or UART. Ensure compatibility with supported cell controllers like MC33771C. Consider the LQFP-48 package constraints and industrial temperature range requirements during PCB layout and thermal design.

Part Context

Part of the MC33665A series, designed as a general-purpose gateway for battery management architectures. It bridges isolated daisy chain networks with standard communication buses, facilitating integration with various market microcontrollers. This role is critical in transitioning from distributed to centralized BMS topologies in electrification applications.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. As the component is End-of-Life, engineers must evaluate alternative gateways or redesign using supported current-generation NXP battery management solutions.

FAQ

What communication protocols does the MC33665ATU4AER2 support?

It supports SPI, CAN FD, and UART for communication with the microcontroller, while routing messages from up to four TPL daisy chain ports.

Is the MC33665ATU4AER2 currently in production?

No, the component is listed as End-of-Life (EOL), indicating that the manufacturer will discontinue production.

Which battery cell controllers are compatible with this gateway?

It is compatible with MC33771C and MC33772C battery cell controllers.