UJA1075ATW/5V0/1J

Specialized Overview

The UJA1075ATW/5V0/1J is a high-speed CAN/LIN core System Basis Chip (SBC) from NXP Semiconductors, designed for automotive Electronic Control Units. It integrates a high-speed CAN transceiver compliant with ISO 11898-2 and ISO 11898-5, and a LIN transceiver supporting LIN 2.2A and SAE J2602 standards. The device features a scalable 5 V main voltage regulator delivering up to 250 mA for the microcontroller, alongside a separate 5 V regulator for the on-board CAN transceiver. Communication with the host microcontroller is facilitated via a full-duplex Serial Peripheral Interface (SPI). The component operates within a battery supply range of 4.5 V to 28 V and is housed in a 32-lead HTSSOP package.

Specialized Feature Summary

• Integrates high-speed CAN and LIN transceivers with enhanced EMC performance and robust ESD protection.
• Includes a programmable watchdog with independent clock source and multiple operational modes.
• Features advanced power management with low-power standby and sleep states and wake-up detection capabilities.
• Provides detailed system status reporting and diagnostic functions through SPI communication.

Specialized Applications

• Automotive Electronic Control Units (ECU)
• Power and sensor peripheral control systems
• Networking applications requiring CAN as the main interface and LIN as a sub-bus

Specialized Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm regulatory compliance and feature set. Ensure the selected variant matches the required voltage regulator output and presence of integrated watchdog functionality before procurement.

Specialized Selection Notes

Select this component when a single-chip solution for CAN and LIN networking is required alongside integrated power regulation. Confirm that the 5 V regulator output aligns with the microcontroller supply requirements and verify compatibility with the target application's electromagnetic interference constraints.

Specialized Part Context

This part belongs to the UJA1075A family of System Basis Chips. Variants within this family differ primarily by the output voltage of the main regulator (3.3 V or 5 V) and the inclusion of an advanced independent watchdog function. The ATW designation indicates the specific thermal-enhanced thin shrink small outline package used.

Specialized Replacement Considerations

Direct replacements must match the HTSSOP32 package and pinout. Verify functional equivalence regarding CAN/LIN protocol support and voltage regulator specifications. Consider variants like UJA1075ATW/3V3/1J if a 3.3 V microcontroller supply is needed instead.