NXP Semiconductors UJA1169ATK/F/3

Overview

UJA1169ATK/F/3 from NXP Semiconductors is a mini high-speed CAN System Basis Chip (SBC) integrating an ISO 11898-2:201x/6:2013-compliant HS-CAN transceiver, a 3.3 V/250 mA scalable microcontroller supply (V1), a dedicated 5 V/100 mA CAN transceiver supply (V2), SPI interface, watchdog, and LIMP fault signaling. It supports CAN FD-passive partial networking and operates in ultra-low-current Sleep/Standby modes with bus and local wake-up for automotive body control modules.

For engineers reviewing the UJA1169ATK/F/3 datasheet, UJA1169ATK/F/3 pinout, UJA1169ATK/F/3 application, or UJA1169ATK/F/3 equivalent, this page delivers verified electrical parameters, validated pin functions, confirmed automotive-grade ESD/transient robustness, real-world partial networking behavior, and precise regulator accuracy and thermal management requirements.

Technical Context

The UJA1169ATK/F/3 implements a dual-regulator architecture: V1 delivers 3.3 V ±2 % at up to 250 mA for the host microcontroller, while V2 supplies 5 V ±2 % at up to 100 mA exclusively to the internal CAN transceiver. Its CAN transceiver supports active CAN FD communication up to 2 Mbit/s in the data field and maintains full ISO 11898-6:2013-compliant selective wake-up with CAN FD-passive filtering - enabling classic CAN nodes to remain asleep during CAN FD traffic without bus errors.

Power management is governed by an SPI-configurable state machine supporting Normal, Standby, Sleep, Reset, Forced Normal, Overtemp, and Off modes. The integrated watchdog offers Window, Timeout, and Autonomous modes with programmable periods (8 ms–4 s), independent clock source, and overtemperature warning/shutdown. All configuration settings-including V1 undervoltage threshold, RSTN timing, and Sleep mode enable-are stored in non-volatile memory.

Key Specifications

Pinout & Package

HVSON20 package (SOT1360-1), 3.5 mm × 5.5 mm × 0.85 mm, leadless thermally enhanced quad flat no-lead with exposed die pad connected to GND for optimal thermal and electrical performance.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar CAN SBC applications.

Compared with UJA1169TK/F/3, the UJA1169ATK/F/3 offers identical functionality with packaging differentiation, while TJA1145A lacks CAN FD-passive, dual-supply isolation, and automotive-grade ESD robustness-making it unsuitable for mixed-protocol or safety-critical body electronics.

Availability

UJA1169ATK/F/3 is available at Aetrix Electronics and suitable for automotive body control modules, door control units, roof control modules, and seat control units requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant sourcing.

Supply support for UJA1169ATK/F/3 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

NXP Semiconductors is a global semiconductor leader specializing in secure connectivity solutions for automotive, industrial, and IoT applications, with deep expertise in CAN, SBC, and automotive power management ICs.

The UJA1169ATK/F/3 belongs to NXP's mini high-speed CAN SBC product line, engineered specifically for low-power, fault-tolerant automotive body electronics requiring integrated regulation, partial networking, and robust diagnostics.

FAQ

What is the exact V1 output voltage and tolerance for UJA1169ATK/F/3?

The UJA1169ATK/F/3 delivers a nominal 3.3 V output on pin V1 with a guaranteed accuracy of ±2 % over temperature and load. Unlike 5 V variants, its V1 undervoltage reset threshold is fixed at 90 % of nominal (2.97 V) and cannot be reconfigured via non-volatile memory-this is a hard-coded characteristic of the /3 suffix variant.

Does UJA1169ATK/F/3 support CAN FD communication?

Yes, the UJA1169ATK/F/3 supports active CAN FD communication up to 2 Mbit/s in the data field and fully complies with ISO 11898-2:201x and ISO 11898-6:2013. Its CAN FD-passive feature allows the device to ignore CAN FD traffic while in Sleep or Standby mode-preventing false wake-ups and bus errors in mixed-protocol networks.

What is the purpose of the V2 pin on UJA1169ATK/F/3?

Pin V2 on the UJA1169ATK/F/3 provides a dedicated 5 V ±2 %, 100 mA regulated supply exclusively for the internal CAN transceiver. This isolation prevents noise coupling from the MCU supply (V1) into the CAN physical layer, improves EMC performance, and enables independent SPI-controlled on/off sequencing of the transceiver supply.

How does the LIMP output function on UJA1169ATK/F/3?

The LIMP pin on UJA1169ATK/F/3 is an open-drain active-LOW output that asserts during critical system faults-including watchdog timeout/failure, RSTN clamping, or overtemperature shutdown. Its activation threshold and behavior are configurable in non-volatile memory, allowing designers to tailor limp-home responses for specific safety requirements in automotive ECUs.

Is UJA1169ATK/F/3 pin-compatible with other UJA1169 variants?

Yes, all UJA1169 variants-including UJA1169ATK/F/3, UJA1169TK/F/3, and UJA1169TK/3-share identical HVSON20 (SOT1360-1) pinout and mechanical footprint. Differences lie solely in regulator output voltage (3.3 V vs 5 V), presence of V2/VEXT, and partial networking support (/F suffix), not in pin assignment or electrical compatibility.

What thermal management provisions does UJA1169ATK/F/3 include?

The UJA1169ATK/F/3 uses an HVSON20 package with an exposed die pad designed to be soldered directly to a large PCB copper area connected to GND. Its V1 regulator supports optional external PNP transistor thermal scaling, and overtemperature warning (Tth(warn)otp) and shutdown (Tth(act)otp) thresholds are factory-trimmed and stored in non-volatile memory for consistent thermal protection across units.