UJA1078TW/5V0,118

Specialized Overview

The UJA1078TW/5V0,118 is a System Basis Chip (SBC) integrating a high-speed CAN transceiver and two LIN transceivers for automotive Electronic Control Units. It features a scalable 5 V voltage regulator delivering up to 250 mA for microcontroller supply, extendable via an external PNP transistor. The device includes a dedicated 5 V regulator for the CAN transceiver, a programmable watchdog with window and timeout modes, and a full-duplex 16-bit SPI interface. Designed in a 32-lead HTSSOP package, it supports ISO 11898-2/5 and LIN 2.1 standards.

Specialized Feature Summary

• Integrates high-speed CAN and dual LIN transceivers with independent power management regulators
• Provides advanced system control through a programmable watchdog and detailed status reporting via SPI
• Ensures robust operation with excellent EMC performance and protection against electrostatic discharge and transients

Specialized Applications

• Automotive electronic control units requiring integrated networking and power management
• Sensor peripheral control systems utilizing CAN as the main network interface
• Local sub-bus applications using LIN interfaces for distributed sensor networks

Specialized Procurement Notes

Verify the specific ordering suffix against official NXP documentation to confirm regulator voltage and feature set. Ensure compatibility with the target microcontroller's CAN controller requirements. Confirm package specifications match the design constraints for thermal dissipation and board layout.

Specialized Selection Notes

Select this component when a single-chip solution for CAN/LIN communication and microcontroller power regulation is required. Consider the external PNP transistor option if higher current capability or improved heat distribution across the PCB is necessary for the application.

Specialized Part Context

This part belongs to the UJA1078 family of core System Basis Chips designed to replace discrete components in ECUs. It consolidates networking interfaces and power management into a compact package, simplifying ECU design while maintaining compliance with automotive standards for reliability and electromagnetic compatibility.

Specialized Replacement Considerations

The datasheet notes downward compatibility with the TJA1042 CAN transceiver. Verify pinout and register configurations before substituting other SBCs from the same family, such as those with different regulator voltages or without the watchdog feature.