UJA1135V System Basis Chip with Buck-Boost Converter, HS-CAN and LIN Transceivers - HVQFN-48 Package

This device is a highly integrated System Basis Chip (SBC) engineered for next-generation automotive Electronic Control Units (ECUs) demanding robust power and communication capabilities .
It features a fully integrated automatic switched-mode power supply (SMPS) with Buck-Boost conversion, requiring only a single external coil to efficiently handle both step-down and step-up voltage regulation .
The primary regulator (V1) delivers 5V or 3.3V at up to 500mA to power the microcontroller, while a secondary regulator (V2) provides 5V at 100mA for off-board sensors .
An integrated high-speed CAN transceiver supports CAN FD communication at data rates up to 2 Mbit/s, enabling advanced vehicle networking .
The device also includes LIN transceivers compliant with LIN 2.x and SAE J2602 standards, expanding connectivity for body electronics modules .
The Boost mode capability ensures uninterrupted microcontroller operation during battery voltage dips, a critical feature for vehicle safety systems .
Integrated fail-safe features include a configurable watchdog and advanced 'limp home' functionality, configurable via non-volatile memory .
The CAN and LIN bus pins provide ±40V short-circuit protection and ±6kV ESD protection, ensuring reliability in harsh automotive environments .
The IC is housed in a space-saving HVQFN-48 package, designed for automated assembly and optimized thermal performance.
This component is AEC-Q100 qualified and operates reliably from -40°C to +150°C, suitable for engine management, body control, and gateway modules.