ßßDRIVENßBY LIN SBC with voltage regulator, watchdog and Relais driver E981.05 Features General Description ÿ ÿ ÿ ÿ ÿ ÿ ÿ ÿ ÿ ÿ ÿ ÿ ÿ The E981.05 is a system basic chip for LIN bus and relay driver applications in automotive electronic systems. It realizes the smart-power high-voltage part, i.e. peripheral supply, drivers, monitoring, HV inputs and LIN physical layer interface. A serial die-to-die interface is realized for communication with the host controller. The IC can be switched into sleep mode with very low current consumption by software commands. Wake up can be performed through 4 HV inputs, the LIN bus and VSUP pin. System Basic Chip (SBC) for LIN Applications 3.3V Peripheral Supply with 25mA external load current LIN transceiver compatible to 2.1 and J2602, BUS pin ESD-protected ≥ 6 kV IEC-61000-4-2 4 protected HV IOs with internal 8mA pull up current sources 2 relay driver outputs with clamp functionality and load dump protection 1 high side driver with clamp functionality very low power sleep mode current consumption and 4 wake up channels on chip temperature sensing on chip battery voltage monitor serial interface for communication with host controller µC window watchdog Supply voltage range 7V to 18V Limited functional voltage range 4.2V to 40V Applications ÿ Smart-Power Mixed Signal High-Voltage System Basic Chip for: ÿ window lifter ÿ small door modules ÿ seat adjustment VBAT VSUP VDDA VMON Power Supply 3.3V GND KEY 1 KEY 2 4x KEY 3 VDDA Voltage Monitor Temperature Sensor Watchdog INT INT SPI MOSI MISO SCK SCSN SLP MCRST HV Keys I/O KEY 4 Control RSTB Reset Relay Drivers High Side Driver PTAT RxD TxD LIN LIN ADC SPI Original Package Dimensions QFN 5x5 32 Lead External µC 5mm x 5mm E981.05 REL1 REL2 HS1 GND GNDL GNDR Rel 1 Rel 2 M Hall ELMOS Semiconductor AG Info Sheet QM-No.: 25IS0003E.00 2009-11-04 ELMOS Semiconductor AG – Headquarters Heinrich-Hertz-Str. 1 | 44227 Dortmund | Germany Phone + 49 (0) 231 - 75 49 - 100 | Fax + 49 (0) 231 - 75 49 - 149 [email protected] | www.elmos.de Note ELMOS Semiconductor AG (below ELMOS) reserves the right to make changes to the product contained in this publication without notice. ELMOS assumes no responsibility for the use of any circuits described herein, conveys no licence under any patent or other right, and makes no representation that the circuits are free of patent infringement. While the information in this publication has been checked, no responsibility, however, is assumed for inaccuracies. ELMOS does not recommend the use of any of its products in life support applications where the failure or malfunction of the product can reasonably be expected to cause failure of a life-support system or to significantly affect its safety or effectiveness. Products are not authorized for use in such applications. Copyright © 2009 ELMOS Reproduction, in part or whole, without the prior written consent of ELMOS, is prohibited.