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TJA1128 Datasheet

LIN transceiver

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TJA1128
LIN mini system basis chip
Rev. 1 — 29 March 2018
Product data sheet
1 General description
The TJA1128 is a LIN Mini System Basis Chip (SBC) with a LIN transceiver, a low-
dropout voltage regulator (LDO), a window watchdog, two WAKE inputs, one general
purpose input (GPI) and one high-voltage multipurpose (HVMPO) output. The voltage
regulator delivers up to 85 mA and is available with 3.3 V and 5.0 V output voltages. The
TJA1128 can be operated in very low-current STANDBY and SLEEP modes with bus
and local wake-up capability.
2 Features and benefits
2.1 General
Battery operating voltage range from (3.3 V) 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)


NXP Semiconductors Electronic Components Datasheet

TJA1128 Datasheet

LIN transceiver

No Preview Available !

NXP Semiconductors
TJA1128
LIN mini system basis chip
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 slave 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
TJA1128
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 1 — 29 March 2018
© NXP B.V. 2018. All rights reserved.
2 / 39


Part Number TJA1128
Description LIN transceiver
Maker NXP
Total Page 3 Pages
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