Microchip ATA6617C-P3QW-1: A System Basis Chip for Automotive LIN Networking Applications

The increasing complexity of modern vehicle electronics demands highly integrated and robust components. In the realm of body control modules, sensor interfaces, and intelligent actuators, the Local Interconnect Network (LIN) remains a cornerstone for cost-effective, low-speed communication. Addressing the need for compact and reliable solutions, the Microchip ATA6617C-P3QW-1 emerges as a premier System Basis Chip (SBC) designed specifically for these demanding automotive environments.

This highly integrated circuit combines several critical functions into a single 32-pin VQFN package. At its core, the device features a LIN 2.2A / SAE J2602 compliant transceiver, which serves as the physical interface between a host microcontroller and the LIN bus. This transceiver is engineered for exceptional electrostatic discharge (ESD) protection and electromagnetic compatibility (EMC), ensuring reliable data transmission in the electrically noisy environment of an automobile.

Beyond the transceiver, the ATA6617C-P3QW-1 integrates a voltage regulator capable of delivering a stable 5V or 3.3V output at up to 80 mA, sufficient to power an associated microcontroller or sensors. This eliminates the need for an external regulator, reducing both the bill of materials (BOM) and the overall PCB footprint. Furthermore, the chip includes a window watchdog and a high-side switch with current limitation and diagnostic feedback, providing enhanced control and safety for peripheral components like LEDs or sensors.

A key aspect of its automotive qualification is its resilience. The device is designed to operate within a wide supply voltage range and is protected against load dump, reverse polarity, and over-temperature conditions. This robustness, coupled with its compliance with the AEC-Q100 standard, makes it an ideal choice for applications such as window lifters, sunroof controls, seat control units, and steering wheel modules.

ICGOOODFIND: The Microchip ATA6617C-P3QW-1 is a highly integrated and robust System Basis Chip that consolidates a LIN transceiver, voltage regulator, and high-side switch. It significantly simplifies design, enhances reliability, and reduces system cost for a wide array of automotive LIN network applications, ensuring performance in harsh operating conditions.

Keywords: System Basis Chip (SBC), LIN Transceiver, Automotive Networking, Voltage Regulator, AEC-Q100.