UJA1075TW/5V0,112

Specialized Overview

The UJA1075TW/5V0,112 is a high-speed CAN/LIN core System Basis Chip (SBC) designed for automotive Electronic Control Units (ECUs). It integrates a high-speed CAN transceiver compliant with ISO 11898-2 and ISO 11898-5, and a LIN transceiver compliant with LIN 2.1 and SAE J2602. The device features a scalable 5 V main voltage regulator (V1) delivering up to 250 mA for microcontroller supply, extendable via an external PNP transistor. A separate 5 V voltage regulator (V2) powers the on-board CAN transceiver independently. Communication with the host microcontroller is facilitated through a full-duplex Serial Peripheral Interface (SPI).

Specialized Feature Summary

• Integrates high-speed CAN and LIN transceivers with dedicated low-dropout regulators for improved EMC performance.
• Provides advanced power management including Standby and Sleep modes with wake-up detection via CAN, LIN, or local pins.
• Includes an independent watchdog timer with Window and Timeout modes for system safety.
• Features robust protection against electrostatic discharge, short circuits, and transient voltages.

Specialized Applications

• Automotive electronic control units (ECUs)
• Power and sensor peripheral networking applications
• Systems requiring integrated CAN/LIN communication and power regulation

Specialized Procurement Notes

Verify the specific ordering suffix '112' against the manufacturer's current production status, as documentation indicates potential obsolescence for certain variants. Confirm package type HTSSOP32 and thermal pad requirements during sourcing. Ensure compatibility with existing PCB layouts regarding the exposed die pad connection to ground.

Specialized Selection Notes

Select this variant when a 5 V output is required for the microcontroller supply. Verify that the application does not require the advanced independent watchdog feature, as the base model lacks it unless specified by a 'WD' suffix in the part number. Ensure the host microcontroller supports SPI communication for configuration and diagnostic access.

Specialized Part Context

The UJA1075 series serves as a core System Basis Chip, replacing discrete components in ECUs. It combines CAN and LIN interfaces with power management functions. The TW/5V0 designation indicates the HTSSOP32 package and 5 V regulator version. This component is part of NXP's portfolio for automotive network integration.

Specialized Replacement Considerations

Check for UJA1075ATW/5V0/1J or similar variants if a watchdog feature is required. Verify pin compatibility and electrical specifications before substituting with other SBCs from different manufacturers.