UJA1169TKZ

Specialized Overview

The UJA1169TKZ is a mini high-speed CAN System Basis Chip (SBC) from NXP Semiconductors. It integrates an ISO 11898-2:201x compliant HS-CAN transceiver supporting up to 1 Mbit/s and CAN FD active communication up to 2 Mbit/s. The device includes a scalable 5 V or 3.3 V, 250 mA low-drop voltage regulator (V1) for microcontroller supply. It features a watchdog timer with Window, Timeout, and Autonomous modes, and a Serial Peripheral Interface (SPI) for configuration and diagnostics. The chip supports very low-current Standby and Sleep modes with bus and local wake-up capabilities.

Specialized Feature Summary

• Integrates a high-speed CAN transceiver with autonomous bus biasing and support for CAN FD active communication.
• Provides a scalable 5 V or 3.3 V low-drop voltage regulator for the microcontroller with thermal management via external PNP transistor.
• Includes a watchdog timer with multiple operating modes and configurable periods for system safety.
• Supports partial networking with selective wake-up function incorporating CAN FD passive behavior.

Specialized Applications

• Automotive electronic control units requiring high-speed CAN communication
• Systems needing integrated power management and CAN interface in a compact form factor
• Applications utilizing CAN FD for higher data rate communication

Specialized Procurement Notes

Verify the specific ordering suffix 'Z' against the official datasheet to confirm package type and tape/reel specifications. Ensure compatibility with the required voltage regulator configuration (5 V or 3.3 V) and check if partial networking features are needed, as these define the exact variant within the UJA1169 family.

Specialized Selection Notes

Select this component when a miniaturized SBC with integrated high-speed CAN and power regulation is required. Consider the UJA1169TKZ if the application benefits from the specific pinout and feature set of the TK variant, including the internal CAN supply or external sensor supply options depending on the sub-variant.

Specialized Part Context

The UJA1169 series comprises six variants designed for automotive applications. The UJA1169TKZ belongs to the TK family, which typically includes a dedicated CAN supply (V2) or off-board sensor supply (VEXT). This series is optimized for low power consumption and robust performance in harsh automotive environments.

Specialized Replacement Considerations

Direct replacements must match the HVSON20 package and pinout. Variants like UJA1169TK/F or UJA1169TK/X may be considered if partial networking or external sensor supply features are specifically required by the design.

Specialized FAQ

What is the maximum data rate supported by the CAN transceiver in the UJA1169?

The UJA1169 supports standard high-speed CAN at up to 1 Mbit/s and CAN FD active communication at up to 2 Mbit/s in the data field.

How does the UJA1169 handle overtemperature conditions?

The device issues an overtemperature warning when the temperature exceeds a specific threshold and switches to Overtemp mode, disabling the CAN transmitter and receiver, if the temperature rises further.

Can the UJA1169 operate in a low-power sleep mode?

Yes, the UJA1169 supports a Sleep mode with very low supply current where the V1 regulator is switched off, while still allowing wake-up via CAN bus patterns or the local WAKE pin.