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NXP Semiconductors TJA1128 LIN Mini System Basis Chips

NXP Semiconductors TJA1128 LIN Mini System Basis Chips integrate a LIN transceiver, an LDO voltage regulator, one or two WAKE inputs, a general purpose input (GPI), a high-voltage multi-purpose output (HVMPO), and (optional) a window watchdog. The voltage regulator delivers up to 85mA current and is available with 3.3V and 5V output voltages. NXP TJA1128 can operate in low-current STANDBY and SLEEP modes with bus and local wake-up capability. The majority of the TJA1128 features are (end-of-line) programmable.

Features

  • Battery operating voltage range from (3.3V) 5V to 28V
  • Very low current consumption in SLEEP and STANDBY mode:
    • Typically 14µA in SLEEP mode (voltage regulator off)
    • Typically 22µA in STANDBY mode (voltage regulator on)
  • Remote wake-up capability via pin LIN
  • Local wake-up via pins WAKE1 and WAKE2
    • Configurable level-sensitive wake-up detection
    • Cyclic sampled wake-up detection option with synchronized bias control via pin HVMPO
  • Wake-up source recognition
    • Configurable HVMPO
    • Bias control output for cyclic wake-up
    • Limp-home output
    • Bias control output for battery monitoring circuit
    • GPI-controlled output
  • Limp-home function on overtemperature, watchdog service fail, VCC under-voltage, and RSTN short-circuit to ground
  • Overtemperature shutdown
  • Bidirectional reset pin with variable power-on reset length
  • Device customization:
    • Quasi-one-time configuration via SPI
    • Initial mode to configure and disable
      • Functions (LIN, watchdog, Reset, and WAKE)
      • Modes (SLEEP)
  • Low-dropout voltage regulator for 3.3V/5V microcontroller supply
    • 5V/3.3V nominal output voltage with ±2% accuracy
    • 85mA output current capability
    • Undervoltage detection with reset output
    • Excellent transient response with a small ceramic output capacitor
    • Output is short-circuit-proof to GND
  • LIN transceiver
    • ISO 17987-4:2016 (12V LIN) compliant
    • LIN 2.0, LIN 2.1, LIN 2.2, and LIN 2.2A compliant
    • SAE J2602-1 compliant
    • K-line compatible
    • Baud rate up to 20kBd
    • LIN high-speed mode with fast LIN slope to support high baud rates (>20kBd)
    • Integrated termination resistor for LIN slave applications
    • TXD dominant time-out function
  • Window watchdog
    • Watchdog with Window, Timeout, and Autonomous modes
    • Microcontroller-independent clock source
    • Watchdog period selectable between 16ms and 128ms
    • Dedicated modes for software development and end-of-line flashing
  • Designed for automotive applications
    • Qualified according to AEC-Q100
    • Load dump pulse protected against up to 43V
    • ±8kV ESD)protection according to the human body model (HBM) on LIN-bus pin
    • ±6kV ESD protection according to IEC 61000-4-2 on pins BAT, WAKE1, WAKE2, and ±8kV on pin LIN
    • Bus terminal and battery pin protected against transients in the automotive environment (ISO 7637)
    • LIN-bus pin short-circuit proof to battery and ground
    • Leadless HVSON14 package (3mm × 4.5mm) supporting Automated Optical Inspection (AOI) capability and low thermal resistance

Block Diagram

Block Diagram - NXP Semiconductors TJA1128 LIN Mini System Basis Chips

Application Circuit Diagram

Application Circuit Diagram - NXP Semiconductors TJA1128 LIN Mini System Basis Chips

Associated Products

NXP Semiconductors TJA1051 High-Speed CAN Transceivers

Offers an interface between a CAN protocol controller and the physical two-wire CAN bus.

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Published: 2018-12-06 | Updated: 2023-08-17