LT1183 Linear Technology, LT1183 Datasheet - Page 23

• Manufacturer Part Number: LT1183
• Description: CCFL/LCD Contrast Switching Regulators
• Manufacturer: Linear Technology

TYPICAL APPLICATIONS
0.068 F
C8
0.068 F
C8
33K
R7
33K
R7
1
2
3
4
5
6
7
8
I
DIO
CCFL V
AGND
SHDN
LCD V
CCFL
PGND
LCD
PGND
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.
CCFL
1
2
3
4
5
6
7
8
I
DIO
CCFL V
AGND
SHDN
LCD V
LT1182 LCD Contrast Positive Boost/Charge Pump Converter
CCFL
PGND
LCD
PGND
CCFL
C
C
U
LT1182
C
CCFL V
C
LT1182
LCD V
LT1182 LCD Contrast Positive Boost Converter
ROYER
N
BULB
CCFL V
BAT
FBP
FBN
LCD V
V
SW
SW
IN
ROYER
BULB
BAT
FBP
FBN
16
15
14
13
12
11
10
9
V
SW
SW
IN
16
15
14
13
12
11
10
9
+
+
+
C4
2.2 F
+
C4
2.2 F
V
C13
2.2 F
35V
LT1182/LT1183/LT1184/LT1184F
IN
3V
V
C13
2.2 F
35V
IN
3V
L3
50 H
COILTRONICS CTX50-4
+
22 F
C11
35V
L3
50 H
COILTRONICS CTX50-4
1N914
D5
D4
1N914
C10
0.01 F
C10
0.01 F
1N914
+
D5
C11
22 F
35V
+
C11
22 F
35V
R14
1.21k
1%
R13
8.45k
1%
R12
20k
BAT
8V TO 28V
POSCON
V
OUT
1182 TA12
R14
1.21k
1%
R13
8.45k
1%
R12
20k
POSCON
V
BAT
8V TO 28V
V
OUT
IN
1182 TA13
V
IN
23