cs8182 ON Semiconductor, cs8182 Datasheet - Page 6

• Manufacturer Part Number: cs8182
• Description: Micropower 200 Ma Low Dropout Tracking Regulator/line Driver
• Manufacturer: ON Semiconductor

V
up the conventional way as shown in Figure 13. 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 CS8182 will survive a short to battery when hooked
* C1 is required if the regulator is far from the power source filter.
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
5
Short to Battery
6
7 8 9
Figure 15. 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
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ENABLE
25
= V
70 mA
V
26
Figure 14.
GND
GND
REF
Figure 13.
CS8182
REF
V
IN
/
6
V
GND
GND
Adj
OUT
Figure 14. In this case the CS8182 supply input voltage is set
at 7 V when a short to battery (14 V typical) occurs on V
which normally runs at 5 V. The current into the device
(ammeter in Figure 14) will draw additional current as
displayed in Figure 15.
Switched Application
the reference voltage on the V
continuously
V
voltage on the V
switched out (V
Reference Figure 16.
10 mF
V
V
OUT
OUT
REF
The CS8182 has been designed for use in systems where
C3***
10 nF
C2
ENABLE
= V
/ENABLE pin will be less than 1.0 mA when the
C1*
1.0 mF
V
REF
GND
GND
REF
B+
V
IN
/
+
−
on. Typically, the current into the
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 16.
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
OUT
BAT