12kV - Elmos Semiconductor AG

driven by
E910.48
LIN SBC with voltage regulatoR and watchdog
Features
ÿ
ÿ
ÿ
ÿ
ÿ
ÿ
ÿ
ÿ
ÿ
ÿ
ÿ
ÿ
ÿ
ÿ
ÿ
ÿ
General Description
meets current OEM hardware requirements
Conforming to LIN 1.3, 2.1 and J2602
ESD protection on BUS pin >12kV according to
IEC-61000-4-2
Only a few external components needed
Wake up via bus with slope detection
and debouncing
Operating voltage (VS) 4V to 27V
Very low standby current (typ. <20µA)
Two selectable output voltages: 5V or 3.3V ± 2.0%
Stable voltage regulator with bypass capacitance
down to 100nF
Output current up to 100mA
Optional power transistor for VDD possible
Selectable watchdog windows:
Fixed: 35ms or 75ms; Variable: 3ms to 50ms
Reset pulse durations (10ms, 65ms) and
programmable threshold levels
Output slew rate control to reduce EMI
Over temperature and output current protection
SOIC 16 package, QFN 5x5 in preparation
The E910.48 is a fully integrated LIN interface. Additional functions extend this device to a complete System Basic Chip (SBC) for use together with any µC in an
automotive environment. A flexible voltage regulator
provides either 3.3V or 5V supply with 100mA current
capability. It can be switched on by either a (high voltage tolerant) signal (ENABLE) or by a LIN bus wake-up
request.
The sense input allows to connect an external load
transistor in order to extend the current capability according to the particular application needs. The external Resistor Rs can help to reduce the internal power
dissipation without compromising low supply voltage
operation. An active low reset signal is generated depending on the integrated, configurable power good
detection, according to the watchdog status, and as
well as during power on/off cycles.
pe Be
rf st
in orm ESD
>1 clas an
2k s ce
Applications
possible configuration for 5V operation,
ÿ Bus interface for Local Interconnect
Network
(LIN)watchdog cycle time 35ms
reset threshold
+4,45V / 10ms,
V
VBAT
RS
100nF
100nF
VS
RESW
VS1
VS
monitor
MOD
VDD
VDDS
Voltage
regulator
ENABLE
5V
≥100nF
WDIN
SELWD
External
µC
RESET
*
WAKE
*
TXD
RXD
Watch
dog
SELRES
RESET
Reset
generation
Wakeup
detection
&
VS
LIN
transceiver
to external µC *
WAKE
to external µC *
BUS
220pF
E910.48
ELMOS Semiconductor AG
Info Sheet
QM-No.: 25IS0002E.00 2009-09-29
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
sales@elmos.de | 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.