NCV8184 ON Semiconductor, NCV8184 Datasheet - Page 6

• Manufacturer Part Number: NCV8184
• Description: Micropower 70ma Low Dropout Tracking Regulator/line Driver
• Manufacturer: ON Semiconductor

V
up the conventional way as shown in Figure 19. No damage
to the part will occur. The part also endures a short to battery
when powered by an isolated supply at a lower voltage as in
OUT
** C2 is required for stability.
*** C3 is recommended for EMC susceptibility.
The NCV8184 will survive a short to battery when hooked
* C1 is required if the regulator is far from the power source filter.
18
16
14
12
10
8
6
4
2
0
5
Short to Battery
6
7 8 9
Figure 21. V
Automotive Battery
typically 14 V
10
1112 1314
Loads
V
OUT
OUT
10 mF
VOLTAGE (V)
C2**
15
Short to Battery
1617 1819
Short to battery
V
OUT
Loads
70 mA
20
10 mF
2122 2324
C2**
V
GND
GND
Adj
Short to battery
OUT
V
V
APPLICATION NOTES
A
OUT
OUT
http://onsemi.com
ENABLE
= V
25
70 mA
NCV8184
V
26
Figure 20.
GND
GND
REF
Figure 19.
REF
V
IN
/
6
V
GND
GND
Adj
OUT
Figure 20. In this case the NCV8184 supply input voltage is
set at 7.0 V when a short to battery (14 V typical) occurs on
V
device (ammeter in Figure 20) will draw additional current
as displayed in Figure 21.
Switched Application
the reference voltage on the V
continuously on. Typically, the current into the
V
voltage on the V
switched out (V
Reference Figure 22.
10 mF
V
V
OUT
OUT
OUT
REF
C3***
10 nF
The NCV8184 has been designed for use in systems where
C2
ENABLE
= V
/ENABLE pin will be less than 1.0 mA when the
C1*
1.0 mF
which normally runs at 5.0 V. The current into the
V
GND
GND
REF
REF
B+
V
IN
/
+
-
5.0 V
5.0 V
IN
V
GND
GND
Adj
IN
OUT
C3***
10 nF
can be at high impedance or at ground.)
+
-
pin (usually the ignition line) has been
Automotive Battery
typically 14 V
C1*
1.0 mF
Figure 22.
ENABLE
B+
V
GND
GND
REF
7 V
V
IN
+
/
-
5.0 V
5.0 V
+
-
REF
< 1.0 mA
/ENABLE pin is
C1
1.0 mF
Ignition
Switch
V
5.0 V
REF
V
BAT