NCV7361A ON Semiconductor, NCV7361A Datasheet - Page 15

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

RxD Output
pin:
GND with an output current capability of 1.0 mA.
NCV7361A
Linear Regulator
regulator with a P−Channel MOSFET output driver whose
output is 5.0 V "2% at v50 mA and 5.5 V v V
18 V. Figure 21 shows typical current limit based on the
output voltage.
RESET
and V
high to low after t
guarantee proper operation.
120
100
The received BUS signal will be output to the 5.0 V RxD
This output is a push−pull driver between V
The NCV7361A has an integrated low dropout linear
RESET switches from low to high if V
If V
The RESET output driver is driven from V
80
60
40
20
0
BUS < V
BUS > V
0
OUT
OUT
Figure 21. Characteristic of Current Limit
> V
drops below V
Figure 20. RxD Output Circuitry
1
thr_cnt
thr_cnt
RES
rr
for t
V
vs. Output Voltage
. Short transients will be filtered.
OUT
– 0.5 * V
+ 0.5 * V
2
Res
RES
.
RxD
V
, the RESET output goes from
OUT
thr_hys
thr_hys
3
(V)
RxD = low
4
RxD = high
SUP
is switched on
5
OUT
OUT
SUP
http://onsemi.com
MCU
and
NCV7361A
v
6
to
15
Initialization
is independent of the EN pin.
V
applied [>3.15 V (typical)]. The internal circuitry on V
as well as the internal regulator starts the initialization with
power−on−reset. The voltage regulator is switched on.
is started. After t
to high (Figure 22).
independent from the EN state. The regulator can only be
turned off with a high level followed by a low level on the
EN pin.
Mode Input EN
EN goes from high to low. The normal mode will be kept
as long as EN = high.
low independent of the state of the bus−transceiver.
low with no connection. In the high state, the pulldown
current will be switched off to reduce the quiescent current.
typical 2.1 V and therefore CMOS levels can be used as
input signals. Figure 23 shows the internal circuitry of the
EN pin.
this pin is not connected a low level will be generated. It
will be used two different pull down current sources for
high and low level to minimize the sleep mode current.
SUP
The initialization is started if V
The NCV7361A starts in the normal mode when V
If V
If V
The initialization procedure at power on is started
The NCV7361A is switched into the sleep mode when
The regulator can be turned off by switching EN high to
The EN input is internally pulled down to guarantee a
The maximum input voltage is V
The EN input is internally pulled down to secure that if
16
14
12
10
8
6
4
2
0
Power ON
OUT
0
OUT
Figure 22. Output Current of Reset Output vs.
is higher than V
> V
0.5
POR
Res
1.0
the bus−interface will be activated.
the RESET output switches from low
1.5
V
Res
OUT
V
2.0
, the reset time t
OUT
Voltage
(V)
SUP
2.5
SUP
is switched on. This
3.0
. The threshold is
3.5
Res
= 100 ms
4.0 4.5
SUP
OUT
is