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| BUS IC K-Bus transceiver LIN- / K-Bus transceiver LIN transceiver + VREG LIN transceiver y LIN transceiver + VREG + WD Single wire CAN transceiver CAN transceiver DC/DC CONVERTER MOTOR DRIVER IC RIPPLE COUNTER DRIVER IC I/O IC SENSOR IC SENSOR INTERFACE IC y LIN transceiver with voltage regulator and watchdog FEATURES y y y y y Operating voltage range (VS) 3V to 27V Two selectable output voltages: 5V and 3.3V 2.0% Output current 150mA Reset impulse durations (10ms, 100ms) and threshold levels are programmable Selectable watchdog windows: Fixed: 37ms or 75ms Variable: 3ms to 50ms y y y y y y y y LIN-bus interface, LIN specification 2.0 Output slew rate control to reduce EMI Input voltage bus ranges from - 36V to + 40V Wake up via bus Standby current <30A typical Over temperature and output current protection BUS pin protected of ESD voltage level 4kV SO16 package The external resistor between VS and VS1 keeps the internal power dissipation low without compromising low supply operation. Both 5V and 3.3V applications are possible by selecting the output voltage on pin MOD with a digital signal. No precision feedback resistors are required. APPLICATION y Bus interface for Local Interconnect Network (LIN) communication including C supervisory especially in automotive applications The reset output is active (low) at VCC low, power on, power off and with watchdog timed out. The reset threshold of VCC as well as the reset impuls duration have two programmable levels . When the EN pin is active (high), the voltage regulator is turned on and the output voltage VCC is available. Its quality is regulated by sensing with the VCCS pin. The regulator is switched on by LINBus wake up request or by C directly at pin EN. Providing an integrated watchdog with adjustable window duration the IC offers the best performance as a "System Basic Chip". DESCRIPTION The IC is used as a voltage regulator with an integrated LIN-interface in automotive applications. The voltage regulator supplies an C in the application. PINNING Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Name VS VS1 VRES DRES TxD RxD GND BUS RES RESW WD EN WU MOD VCCS VCC Description Battery supply + 12V Battery supply through external resistor (e.g. RVS1=140Y for Ivcc=100mA) Reset threshold select, weak pull up (VRES=H/L --> thresold high / threshold low) Reset duration and watchdog window select, weak pull up (DRES=H/L --> reset duration 10ms / 100ms) Transmitted serial data, pull up Received serial data Ground LIN-Bus Pin Reset output, active Low Reset additional output with threshold higher on 200mV than RES threshold Watchdog input impulses from C, pull down Enable input, active high, pull down Wake up via LIN-Bus Voltage regulator output voltage mode, weak pull down (MOD=H/L-->VCC=5V/3.3V) Output voltage sense input Voltage regulator output (VCC=5V 3.3V, Iload=0...100mA) VS VS1 VRES DRES TxD RxD GND BUS 1 2 3 4 5 6 7 8 E910.48 PACKAGE 16 15 14 13 12 11 10 9 VCC VCCS MOD5 WU EN WD RESW RES BLOCK DIAGRAM VBAT VS VS1 MOD VDDS VS VDD voltage regulator SEL 3.3V/5V VDDS PWR Option 100n EN SELRES SELWD WDIN watchdog reset & control C RESW RESET WU TxD RxD LIN transceiver BUS 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 (c) 2005 ELMOS Reproduction, in part or whole, without the prior written consent of ELMOS, is prohibited. www.elmos.de | sales@elmos.de 16 elmos product catalog june 2005 17 |
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