UJA1075TW/5V0/WD,1

Specialized Overview

The UJA1075TW/5V0/WD,1 is a high-speed CAN/LIN core System Basis Chip (SBC) from NXP Semiconductors. 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. The device includes an advanced independent watchdog, 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. Communication with the host microcontroller is facilitated via a full-duplex Serial Peripheral Interface (SPI). The component features two local wake-up input ports and a limp home output port, housed in a 32-lead HTSSOP package.

Specialized Feature Summary

• Integrates high-speed CAN and LIN transceivers with dedicated low-dropout voltage regulators for improved EMC performance.
• Features an advanced independent watchdog with window and timeout modes supported by an on-chip oscillator.
• Provides a scalable 5 V main voltage regulator capable of supplying up to 250 mA, extendable via external PNP transistor.
• Includes comprehensive diagnostic capabilities such as undervoltage detection, overtemperature shutdown, and interrupt outputs.

Specialized Applications

• Electronic Control Unit (ECU) designs requiring integrated power management and bus communication.
• Automotive networking applications controlling power and sensor peripherals using CAN as the main interface.
• Systems utilizing LIN as a local sub-bus for peripheral control.

Specialized Procurement Notes

Verify the specific ordering suffix against the manufacturer's current product data sheet to confirm regulatory compliance status and package variant. Confirm that the 'WD' designation matches the requirement for the integrated watchdog feature. Ensure compatibility with the target microcontroller's SPI interface timing requirements before finalizing procurement.

Specialized Selection Notes

Select this component when a single-chip solution is required for both power regulation and dual-bus communication in automotive environments. The 5 V regulator version is suitable for systems requiring a 5 V supply for the microcontroller. Verify that the 32-lead HTSSOP package dimensions fit the printed circuit board layout constraints and thermal dissipation requirements.

Specialized Part Context

This part belongs to the UJA1075 family of System Basis Chips designed for automotive electronic control units. Variants within the family differ primarily in the output voltage of the main regulator (3.3 V or 5 V) and the inclusion of the watchdog timer. The TW/5V0/WD,1 specifically denotes the 5 V regulator version with the watchdog feature in a tape-and-reel packaging format.

Specialized Replacement Considerations

Direct substitutes include other UJA1075 variants such as the UJA1075TW/3V3/WD,1 if a 3.3 V microcontroller supply is acceptable. Cross-vendor replacements require careful evaluation of pin compatibility and electrical specifications against the original datasheet.