NCV7361A ON Semiconductor, NCV7361A Datasheet - Page 13

• Manufacturer Part Number: NCV7361A
• Description: Voltage Regulator
• Manufacturer: ON Semiconductor

V
voltage drops down to V
undervoltage reset becomes active (POR−state). As a result
of this operating, the sleep mode is left to the normal mode.
If V
IC initializes the voltage regulator and continues to work
with the normal mode.
the undervoltage range of V
dynamic Power−On−Reset secures a defined internal state
independent from the duration of the V
secures a stable restart.
Overtemperature Shutdown
overtemperature recognition will be activated and the
regulator voltage will be switched off. The V
drops down, the reset state is entered and the
bus−transceiver is switched off (recessive state).
initialized again (Figure 17) independently from the
voltage levels on EN and BUS. Within the thermal
shutdown mode the transceiver can not be switched to the
normal mode neither with local nor with remote wake−up.
T
parameter differences can appear.
described in Figure 17.
Amax
SUP
RESET
No exit from the sleep mode will take place if the V
The undervoltage reset unit secures stable operating in
If the junction temperature is 155 C < T
After T
The operation of the NCV7361A is possible between
After overtemperature switch−off the IC behaves as
V
SUP
SUP
V
V
Undervoltage in Sleep Mode
OUT
RES
(125 C) and the switch−off temperature, but small
rises again above V
J
falls below 140 C the NCV7361A will be
Initialization
t
Res
SUVR_ON
SUVR_OFF
SUP
T>T
down to GND level. The
J
t
(typical 3.0 V). The
rr
shutdown
(typical 3.5 V), the
Thermal
T<T
SUP
J
J
< 170 C the
drop, which
OUT
t
Res
Figure 17. RESET Behavior
voltage
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SUP
NCV7361A
Spike V
t<t
13
rr
SUP
LIN BUS Transceiver
for data transfer between the LIN bus and the LIN protocol
controller.
40 mA) with slew rate control, wave shaping and current
limit, and a high voltage receiver/comparator followed by
a filter circuit.
Transmit Mode
transferred to the BUS driver for generating a BUS signal.
To minimize the electromagnetic emission of the bus line,
the BUS driver has integrated slew rate control and wave
shaping circuitry.
30 k pullup resistor in series with a diode This diode
prevents reverse current on V
NCV7361A in LIN slave nodes. If this IC is used for LIN
master nodes, it is necessary to terminate the bus pin with
an external 1.0 kW resistor in series with a diode to V
Receive Mode
continuously to the pin RxD. Short spikes on the bus are
suppressed by the internal filter circuit (t = 2.8 ms).
The NCV7361A is a bidirectional bus interface device
The transceiver consists of a pnp−driver (1.2 V @
During transmission the data at the TxD pin will be
Transmitting will be interrupted in the following cases:
The recessive BUS level is generated from the integrated
No additional termination resistor is necessary to use the
The data signal from the BUS pin will be transferred
Sleep Mode
Thermal Shutdown Active
Master Reset (V
Low voltage
V
SUP
t
Res
OUT
< 3.15 V)
Spike V
t<t
BUS
rr
CC
when V
Current limitation
BUS
active
> V
t
Res
SUP
.
BAT
.