TJA1128ETK/0Z

2.1 General
• Intended for use in road vehicles with a nominal 12 V system, full battery operating
range from 5.0 V to 28 V
• Very low current consumption in SLEEP and STANDBY mode
– SLEEP mode (voltage regulator off): typically 14 µA
– STANDBY mode (voltage regulator on): typically 22 µA
• 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 high-voltage multipurpose output (HVMPO)
– Bias control output for cyclic wake-up
– Limp home output
– Bias control output for battery monitoring circuit
– General purpose input (GPI) controlled output
• Limp home function on overtemperature, watchdog service fail, VCC undervoltage and
RSTN short-circuit to ground
• Overtemperature shutdown
• Bidirectional reset pin with variable power-on reset length
2.2 Device customization
• Quasi one-time configuration via Serial Peripheral Interface (SPI)
• Initial mode to configure and disable
– Functions (e.g., LIN, watchdog, Reset, WAKE)
– Modes (e.g., SLEEP)

2.3 Low-dropout voltage regulator for 3.3 V/5.0 V microcontroller supply
• 5.0 V/3.3 V nominal output voltage, ±2 % accuracy
• 85 mA output current capability
• Undervoltage detection with reset output
• Excellent transient response with a small ceramic output capacitor
• Output is short-circuit proof to GND
2.4 LIN transceiver
• ISO 17987-4:2016 (12 V LIN) compliant
• LIN 2.0, LIN 2.1, LIN 2.2, LIN 2.2A compliant
• SAE J2602-1 compliant
• K-line compatible
• Baud rate up to 20 kBd
• LIN high-speed mode with fast LIN slope to support high baud rates (> 20 kBd)
• Integrated termination resistor for LIN responder applications
• TXD dominant time-out function
2.5 Window watchdog
• Watchdog with Window, Timeout and Autonomous modes
• Microcontroller-independent clock source
• Watchdog period selectable between 16 ms and 128 ms
• Dedicated modes for software development and end-of-line flashing
2.6 Designed for automotive applications
• Qualified according to AEC-Q100
• Load dump pulse protected against up to 43 V
• ±8 kV Electrostatic Discharge (ESD) protection, according to the Human Body Model
(HBM) on LIN-bus pin
• ±6 kV ESD protection according to IEC 61000-4-2 on pins BAT, WAKE1, WAKE2 and
±8 kV 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 (3.0 mm × 4.5 mm) supporting Automated Optical
Inspection (AOI) capability and low thermal resistance