Datasheet

23
LT1182/LT1183/LT1184/LT1184F
TYPICAL APPLICATIONS N
U
LT1182 LCD Contrast Positive Boost Converter
C13
2.2µF
35V
BAT
8V TO 28V
POSCON
V
OUT
≥ V
IN


1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
I
CCFL

DIO
CCFL V
C

AGND
SHDN
LCD V
C
CCFL V
SW

BULB
BAT
ROYER
V
IN

FBP
FBN
LCD V
SW
CCFL
PGND
LCD
PGND
LT1182
+
C8
0.068µF
R7
33K
R13
8.45k
1%
R14
1.21k
1%
C4
2.2µF
V
IN
≥ 3V
R12
20k
+
C10
0.01µF
L3
50µH
COILTRONICS CTX50-4
D5
1N914
+
C11
22µF
35V
1182 TA12
LT1182 LCD Contrast Positive Boost/Charge Pump Converter
C13
2.2µF
35V
BAT
8V TO 28V
POSCON
V
OUT
≥ V
IN


1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
I
CCFL

DIO
CCFL V
C

AGND
SHDN
LCD V
C
CCFL V
SW

BULB
BAT
ROYER
V
IN

FBP
FBN
LCD V
SW
CCFL
PGND
LCD
PGND
LT1182
+
C8
0.068µF
R7
33K
R13
8.45k
1%
R14
1.21k
1%
C4
2.2µF
V
IN
≥ 3V
R12
20k
+
C10
0.01µF
1182 TA13
L3
50µH
COILTRONICS CTX50-4
D4
1N914
C11
22µF
35V
D5
1N914
+
+
C11
22µF
35V
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-
tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.