TJA1128CTK/1Z

Specialized Overview

The TJA1128CTK/1Z is a LIN Mini System Basis Chip (SBC) from NXP Semiconductors, designed for road vehicles with nominal 12 V systems. It integrates a LIN transceiver compliant with ISO 17987-4:2016 and SAE J2602, supporting baud rates up to 20 kBd. The device includes a low-dropout voltage regulator (LDO) providing 5.0 V output with ±2% accuracy and an 85 mA current capability. It features two WAKE inputs, a window watchdog, and one high-voltage multipurpose (HVMPO) output. Operating within a battery range of 5.0 V to 28 V, it supports very low current consumption in STANDBY (typically 22 µA) and SLEEP modes (typically 14 µA). The component is housed in a leadless HVSON14 package (3.0 mm × 4.5 mm) and is qualified according to AEC-Q100.

Specialized Feature Summary

• Integrates a LIN transceiver, LDO, window watchdog, and HVMPO output in a single compact package.
• Supports configurable wake-up sources via local pins and remote LIN bus signals.
• Features quasi one-time configuration via SPI for customizing internal functions and modes.
• Provides robust protection against overtemperature, undervoltage, and electrostatic discharge.

Specialized Applications

• Body Control Modules (BCM)
• Seat control units
• Sensor nodes

Specialized Procurement Notes

Verify the specific ordering suffix 'CTK/1Z' against the manufacturer's official documentation to confirm the exact factory preset configuration, including the initial CRC value and enabled features. Ensure that the procurement channel provides valid traceability and authenticity certificates required for automotive-grade components.

Specialized Selection Notes

Select this variant when a 5.0 V LDO output and two WAKE inputs are required without an integrated watchdog. Confirm that the application environment stays within the specified operating temperature range and that the SPI interface is available for necessary system configuration during initialization.

Specialized Part Context

This component belongs to the TJA1128 family of LIN mini system basis chips. Variants within the family differ primarily by LDO output voltage (3.3 V or 5.0 V), number of WAKE inputs, presence of a watchdog, and initial CRC values used for nonvolatile memory programming.

Specialized Replacement Considerations

Direct substitutes include other TJA1128 variants such as TJA1128ETK/1Z or TJA1128BTK/1Z, provided their specific factory presets match the design requirements. Verify pin compatibility and electrical characteristics before substitution.