E520.35B62AC ELMOS Semiconductor, E520.35B62AC Datasheet - Page 28

• Manufacturer Part Number: E520.35B62AC
• Description: LIN Transceivers LIN SBC with VR & Watchdog
• Manufacturer: ELMOS Semiconductor

Specifications of E520.35B62AC

• Rohs: yes
• Operating Supply Voltage: 5 V
• Supply Current: 10 mA
• Maximum Operating Temperature: + 125 C
• Package / Case: QFN-20
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT

LIN SBC with Voltage Regulator and Watchdog
ADVANCE PRODUCT INFORMATION JUL 26, 2011
6.7.2
The digital input pins have internal pullup or pulldown sources for fail-safe operating conditions
according to the following table:
6.7.3
The LIN-SBC is protected against thermal stress. In case the junction temperature exceeds the
shutdown temperature T
junction temerature cools down by T
Depending on the cause for the over temperature (voltage regulator or LIN transmitter) the SBC
behaves different. In any case it shut down the detected heat source to reduce power dissipation of the
SBC.
6.7.4
The output current of the LIN transmitter is limited to I
short circuit to pin VS .
In case the SBC thermal shutdown flag is caused by the LIN transceiver the transmitter is disabled and
the LIN over temperature flag is set.
The over temperature flag is reset and the LIN transmitter is enabled in case the junction temerature
cools down by T
6.7.5
In case of shorts at pin VDD the output current of the voltage regulator is limited to I
limit power dissipation of the device the voltage regulator is shut down if the thermal shutdown flag is
caused by by the voltage regulator. A debounce filter of t
The voltage regulator is switched on again in case the junction temperature colls down by T
independently of pin EN. The VDD shut down causes a mode change, if the pin VDD voltage drops
below the VDD reset threshold level V
6.7.6
In case of battery voltage loss (pin VS) and ground loss (pin GND) reverse current from the LIN bus line
is limited.
ELMOS Semiconductor AG
WDDM
TXD
EN
WDIN
Digital input pullup / pulldown
Thermal shutdown
LIN over current protection
Voltage regulator over current protection
LIN loss of ground
Pin
HYST
. The LIN shut down does not result in any state change.
SHDN
, the internal SBC thermal shutdown flag is set. The flag is reset in case the
Table 4: Fail-Save Pin-Termination Table.
weak pull down
weak pull up
weak pull down
weak pull down
HYST
DD,RSTAXX
.
Data Sheet 28 / 29
Termination
. In this case the device enters power-on mode.
LIN,LIM
DD,SHDN
in order to protect the transmitter against
is implemented.
set WD active in case of floating
pin WDDM
set TXD input to defined level in
case of floating pin TXD
force SBC in Sleep mode in case
of floating pin EN
terminates WD trigger input in
case of floating pin WDIN; results
in activating RES_N
QM-No.: 25DS0060E.00
Reason
DD,LIM
. In order to
HYST
E520.35