RC4194
PRODUCT SPECIFICATION
Typical Applications
0.01µF
+V
OUT
To Additional
Comparators
4.7µF**
+V
S
Comp+
+V
OUT
R
A
(Typically 15 RC4805s)
+V
S
RM4194
-V
S
-V
S
R
SET
Comp- Gnd
71.5K
R
0
Bal
R
B
4805
R
0
-V
OUT
-V
OUT
= -5V
To Additional
Comparators
4.7µF
0.01µF
R
O
(k�½ ) = 2.5 (-V
OUT
)
Adjust R
O
for -V
OUT
= -5V (12.5 k
W
)
R
F1
= R
F2
= 20 k�½ (See Schematic)
R
F1
+ V
OUT
= -V
OUT
R
F2
R
A
= when +V
OUT
R
A
R
B
-V
OUT
65-0205
R
B
= when +V
OUT
-V
OUT
For +V
OUT
= 5 when -V
OUT
= -5V
R
A
=
R
B
=
Figure 4. Unbalanced Output Voltage — Comparator Application
2N4905 or equiv.
0.1
m
F
R
SC
*
2N2297 or equiv.
+V
S
47
W
+V
S
+V
OUT
GND
Comp+
+V
OUT
60µF**
4194
-V
S
47
W
-V
S
0.1 m
F
R
0
2N2297 or equiv.
71.5K
Load regulation
10 mV @ 2.5A
R
SC
*
2N914 or equiv.
*R
SC
=
0.7
I
SC
R
O
(k
W
) = 2.5 V
O
R
SET
Comp-
R
0
-V
OUT
60µF
-V
OUT
**Optional usage - Not as critical as -V
O
bypass capacitors.
Note:
Compensation and bypass capacitor connections should be close as posibe to the 4194
65-0206
Figure 5. High Output Application
5
FAIRCHILD [ FAIRCHILD SEMICONDUCTOR ]
