Ieper, Belgium —With the TH8062 , Melexis extends its successful LIN transceiver and System Basis Chips (SBC’s) product line for the simple and effective development of LIN slaves. The IC combines a physical layer LIN transceiver according to LIN 2.0 as well as SAEJ2602 with a 5 V voltage regulator with RESET output for the connected microcontroller. This combination reduces the LIN system costs and makes it possible to develop simple but powerful and cheap LIN slaves with a direct connection to the 12 V boardnet. The IC is optimized in accordance with the increased EMC requirements for single wire bus systems. It is the 1st member of the 2nd generation of LIN system basis ICs of Melexis and it is pin to pin compatible to the well known system basis IC TH8061.

The TH8062 is produced in a 0.8 HV-CMOS technology and optimized for minimal current consumption as well as excellent EMC behavior. The current consumption in standby mode is typically 15 A. The integrated standby management assures that the TH8062 can “wake up” from the LIN bus itself or directly from a connected microcontroller or other external source. The IC also generates a RESET output signal to minimize the external circuitry of the microcontroller. The power on reset time is programmable from 4 ms to 30 ms. The integrated voltage regulator generates output voltage of 5 V 2 % with a maximum load current of 70 mA. For self protection the IC is equipped with an integrated load current limitation, over temperature shutdown as well as 40 V load dump protection.

The EMC behaviour of LIN Bus ICs is critical in automotive applications. The TH8062 design exhibits remarkable robustness when subjected to the injection of high frequency disturbances. The IC has also achieved very low electromagnetic emission to further simplify the design challenges of networked communication in hostile automotive environments. For the data transmission according J2602 a special low slew mode is available. With the help of this mode the emission can be further decreased if only half of the LIN bus bandwidth is used. The TH8062 is qualified in accordance to AECQ100 and ROHS compatible. It can be soldered up to 260 °C according to JEDEC 020C.

Melexis NV , Ieper, Belgium. www.melexis.com.