UJA1169TK/FZ

Specialized Overview

The UJA1169TK/FZ is a mini high-speed CAN System Basis Chip (SBC) from NXP Semiconductors, housed in an SOT1360-1 package. It integrates an ISO 11898-2:201x compliant HS-CAN transceiver supporting active CAN FD up to 2 Mbit/s and partial networking with CAN FD-passive support. The device features a scalable 5 V or 3.3 V 250 mA low-drop voltage regulator (V1) for microcontroller supply, controlled via SPI. It includes a watchdog timer, local wake-up pin, and LIMP output for system diagnostics. The chip operates in Standby and Sleep modes with very low current consumption and supports remote and local wake-up mechanisms.

Specialized Feature Summary

• Integrates a high-speed CAN transceiver with autonomous bus biasing and CAN FD-passive support for partial networking.
• Provides a scalable 5 V or 3.3 V 250 mA low-drop voltage regulator for the host microcontroller.
• Includes a watchdog timer with Window, Timeout, and Autonomous modes for system safety.
• Features non-volatile memory for customer configuration of power-on and limp-home behavior.

Specialized Applications

• Automotive electronic control units requiring high-speed CAN communication.
• Systems needing low-power standby and sleep modes with wake-up capability.
• Applications utilizing CAN FD networks with mixed classic CAN and CAN FD nodes.

Specialized Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to ensure correct variant selection. Confirm that the required regulatory compliance and package type match the project specifications before finalizing procurement orders.

Specialized Selection Notes

Select this component when a compact SBC solution with integrated high-speed CAN and partial networking is required. Ensure the external PNP transistor requirements for thermal management are accounted for in the design. Verify compatibility with the target microcontroller's reset and SPI interface requirements.

Specialized Part Context

The UJA1169 family offers various configurations including different regulator outputs and additional supplies like V2 or VEXT. The /F suffix indicates support for ISO 11898-6 partial networking. This SBC is designed for automotive applications with robust ESD protection and transient immunity.

Specialized Replacement Considerations

Check NXP's official replacement guide for direct substitutes. Consider variants within the UJA1169 family such as UJA1169TK/X/F if off-board sensor supply is needed instead of on-board CAN supply.

Specialized FAQ

What is the maximum data rate supported by the CAN transceiver?

The transceiver supports standard CAN at 1 Mbit/s and active CAN FD communication up to 2 Mbit/s in the data field.

How does the UJA1169 handle CAN FD traffic in Sleep mode?

It supports CAN FD-passive, allowing the device to ignore CAN FD bus traffic in Sleep/Standby mode without generating bus errors.

What is the function of the LIMP output pin?

The LIMP pin is a dedicated open-drain output that flags system failures such as watchdog failure, RSTN clamping, or overtemperature events.