UJA1169ATK/FZ

Specialized Overview

The UJA1169ATK/FZ is a mini high-speed CAN System Basis Chip (SBC) from NXP Semiconductors. It integrates an ISO 11898-2:2016 and SAE J2284 compliant HS-CAN transceiver supporting CAN FD active communication up to 5 Mbit/s. The device includes a scalable 5 V or 3.3 V, 250 mA low-drop voltage regulator (V1) for microcontroller supply, a watchdog timer, and Serial Peripheral Interface (SPI). It supports very low-current Standby and Sleep modes with bus and local wake-up capabilities. This variant features CAN partial networking with selective wake-up incorporating CAN FD-passive support.

Specialized Feature Summary

• Integrates a high-speed CAN transceiver compliant with ISO 11898-2:2016 and SAE J2284 standards, supporting CAN FD active communication.
• Includes a scalable 5 V or 3.3 V, 250 mA low-drop voltage regulator (V1) for microcontroller supply based on an external PNP transistor concept.
• Supports CAN partial networking with selective wake-up function incorporating CAN FD-passive to ignore CAN FD traffic in sleep/standby modes.
• Features autonomous bus biasing, hardware and software compatibility with the UJA1169 family, and non-volatile memory for configuration.

Specialized Applications

• Automotive electronic control units requiring high-speed CAN communication
• Systems utilizing CAN FD protocols for data rates up to 5 Mbit/s
• Applications needing integrated power management and system basis chip functionality

Specialized Procurement Notes

Verify the specific ordering suffix Z against official documentation to confirm tape and reel packaging details. Ensure the component matches the HVSON20 package dimensions and terminal count specified in the datasheet. Confirm that the selected variant aligns with the required voltage regulator configurations and partial networking features for your application design.

Specialized Selection Notes

Select this variant if your design requires CAN partial networking with CAN FD-passive support to prevent false wake-ups during CAN FD traffic. Choose this part when a 5 V or 3.3 V scalable supply is needed for the microcontroller alongside a high-speed CAN interface. Consider the HVSON20 package constraints and thermal requirements associated with the external PNP transistor implementation for the V1 regulator.

Specialized Part Context

The UJA1169A series comprises six variants differing in supply configurations and features. The UJA1169ATK/FZ belongs to the group featuring a 5 V regulator (V1) and CAN partial networking with CAN FD-passive support. Unlike variants with V2, it does not include an onboard 5 V regulator for the internal CAN transceiver; instead, the transceiver is supplied internally via V1.

Specialized Replacement Considerations

Direct replacements within the UJA1169A family must match the /F suffix for partial networking support and the /TK suffix for the 5 V V1 regulator. Verify pinout compatibility and ensure the substitute part supports the required CAN FD data rates and SPI interface configurations.

Specialized FAQ

How does the UJA1169ATK/FZ handle CAN FD traffic in sleep mode?

It incorporates CAN FD-passive support, allowing the device to ignore CAN FD bus traffic while in Sleep or Standby mode, preventing false wake-ups and bus errors for nodes that do not need to communicate CAN FD messages.

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

The integrated CAN transceiver supports CAN FD active communication at data rates up to 5 Mbit/s in the CAN FD data field.

How is the V1 regulator implemented in this device?

The V1 regulator is a scalable 5 V or 3.3 V, 250 mA low-drop voltage regulator based on an external PNP transistor concept, allowing for thermal scaling and current limiting above 250 mA.