Infineon TLE7257LEXUMA1 LIN Transceiver for Automotive Network Systems

The evolution of modern vehicles is intrinsically linked to the advancement of their electronic network systems. As the number of electronic control units (ECUs) continues to rise, robust and cost-effective communication buses are essential. The Local Interconnect Network (LIN) bus serves as a reliable backbone for master-slave communication between sensors and actuators in sub-networks. At the heart of many of these systems is the Infineon TLE7257LEXUMA1 LIN transceiver, a device engineered to meet the stringent demands of the automotive environment.

This transceiver acts as a physical interface between a microcontroller's serial peripheral and the LIN bus. Its primary function is to convert digital signals from the microcontroller into bus voltages robust enough for automotive environments and vice-versa. The TLE7257LEXUMA1 is designed for exceptional electromagnetic compatibility (EMC) performance and very low electromagnetic emission (EME), which is critical for preventing interference with sensitive radio systems and other electronic modules within the vehicle.

A key feature of this transceiver is its compliance with the latest LIN 2.2/2.2A and SAE J2602 standards, ensuring interoperability within modern automotive networks. It supports baud rates up to 20 kbaud and operates from a supply voltage range of 5.5 V to 27 V, with survival voltage up to 42 V. This makes it exceptionally resilient to the harsh electrical conditions of an automotive power system, including load-dump pulses and jump-start scenarios.

Furthermore, the device incorporates multiple protection and diagnostic features that enhance system reliability. These include protection against transient voltages (ISO 7637-3), overtemperature, and loss of battery ground. Its very low current consumption in sleep mode is a significant advantage for applications where minimizing quiescent current is paramount for overall vehicle power management, a critical factor for start-stop systems and reducing battery drain.

The TLE7257LEXUMA1 is offered in a compact, green SG-TSON-14 package, making it suitable for space-constrained applications. It is AEC-Q100 qualified, guaranteeing its performance and reliability for automotive use cases such as door modules, seat control units, steering wheel controls, and smart sensors.

ICGOODFIND: The Infineon TLE7257LEXUMA1 stands out as a highly integrated, robust, and efficient LIN transceiver. It provides designers with a reliable solution that simplifies system design while meeting the rigorous performance, protection, and power consumption requirements of next-generation automotive network systems.

Keywords: LIN Transceiver, Automotive EMC, Low Quiescent Current, ISO 7637-3 Protection, AEC-Q100 Qualified.