The Microchip ATA663254 system basis chip is a fully integrated LINtransceiver, designed according to the LIN specification 2.0, 2.1, 2.2, 2.2Aand SAEJ2602-2, with a low-drop voltage regulator with5V/85mA. The combination of voltage regulator and bus transceivermakes it possible to develop simple but powerful slave nodes in LIN bussystems. Microchip ATA663254 is designed to handle the low-speed datacommunication in vehicles (for example, in convenience electronics). Improvedslope control at the LIN driver ensures secure data communication up to20Kbaud. The bus output is designed to withstand high voltage. Sleep mode andsilent mode guarantee minimized current consumption even in the case of afloating or a shorted LIN bus. The voltage regulator is a fully integratedlow-drop regulator working down to a supply voltage of 2.3V with best-in-classcurrent consumption in linear mode (2V...VS...5V) with less than 170μA. Thisenables storing data within the MCU during system shutdown even in case of anunexpected power supply interruption. The device is available in SO8 and DFN8 packagewith wettable flanks and pin assignment according to OEM hardware requirementsfor LIN-, CAN-, and Flexray- interfaces, rev. 1.3.

  Supply voltage up to 40V

  Operating voltage VS = 5V to 28V

  Supply current

  Sleep mode: typically 9μA

  Silent mode: typically 47μA

  Very low current consumption at low supply voltages (2V < VS < 5.5V): typically 130μA

  Linear low-drop voltage regulator, 85mA current capability:

  MLC (multi-layer ceramic) capacitor with 0W ESR

  Normal, fail-safe, and silent mode: VCC = 5.0V ±2%

  Sleep mode: VCC is switched off

  VCC undervoltage detection with open drain reset output (NRES, 4ms reset time)

  Voltage regulator is short-circuit and over-temperature protected

  LIN physical layer according to LIN 2.0, 2.1, 2.2, 2.2A and SAEJ2602-2

  Wake-up capability via LIN bus (100μs dominant)

  Wake-up source recognition

  TXD time-out timer

  Bus pin is over-temperature and short-circuit protected versus GND and battery

  Advanced EMC and ESD performance

  Fulfills the OEM “Hardware Requirements for LIN in Automotive Applications Rev.1.3”

  Interference and damage protection according to ISO7637

  Qualified according to AEC-Q100

  Packages:

  DFN8with wettable flanks (Moisture Sensitivity Level 1)

  SO8