UJA1076ATW/5V0,118

Specialized Overview

The UJA1076ATW/5V0,118 is a high-speed CAN core System Basis Chip (SBC) from NXP Semiconductors. It integrates a high-speed CAN transceiver compliant with ISO 11898-2 and ISO 11898-5 standards, a scalable 5 V voltage regulator delivering up to 250 mA for microcontroller supply, and a separate 5 V regulator for the on-board CAN transceiver. The device features a 16-bit full-duplex Serial Peripheral Interface (SPI), two local wake-up input ports, and a limp home output port. It operates within a battery voltage range of 4.5 V to 28 V and supports an operating temperature range from -40 °C to +150 °C. The component is housed in a 32-lead HTSSOP package.

Specialized Feature Summary

• Integrates a high-speed CAN transceiver with dedicated low-dropout voltage regulators for both the microcontroller and the CAN bus to enhance electromagnetic compatibility performance.
• Provides advanced system control through a programmable watchdog with window and timeout modes, alongside detailed status reporting via a 16-bit SPI interface.
• Supports safe and controlled system start-up behavior with multiple wake-up sources including CAN bus activity and local wake-up pins with source detection.

Specialized Applications

• Electronic Control Units (ECU) requiring integrated power management and high-speed CAN networking
• Automotive sensor peripherals controlled via main network interfaces
• Power distribution systems utilizing external PNP transistors for heat dissipation

Specialized Procurement Notes

Verify the specific ordering suffix against the manufacturer's current product data sheet to confirm regulatory compliance and feature set. Confirm that the HTSSOP32 package dimensions match the target PCB footprint requirements. Ensure the selected variant aligns with the required voltage regulator output specifications for the intended microcontroller application.

Specialized Selection Notes

Select this component when a single-chip solution is required for high-speed CAN communication and robust power management in automotive environments. Consider the 5 V regulator version if the target microcontroller requires a 5 V supply rail. Evaluate the need for an external PNP transistor if the load current exceeds the internal regulator's thermal dissipation capabilities or if improved heat distribution across the PCB is necessary.

Specialized Part Context

The UJA1076A series serves as a core System Basis Chip designed to replace discrete components commonly found in Electronic Control Units. It consolidates essential functions such as the CAN transceiver, voltage regulation, and system control into a single package. This integration reduces board space and simplifies the design of complex automotive networking applications by providing a unified platform for power and communication management.

Specialized Replacement Considerations

The UJA1076A is downward compatible with the TJA1042 CAN transceiver. Designers replacing discrete solutions should verify pin compatibility and register mapping if migrating from previous SBC generations. Consult the official datasheet for any changes in electrical characteristics or package options between different revision levels.