Datasheet

24
LT1182/LT1183/LT1184/LT1184F
TYPICAL APPLICATIONS N
U
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7487
[phone]
●
FAX : [phone]
●
TELEX : 499-3977
LT/GP 0495 10K • PRINTED IN USA
 LINEAR TECHNOLOGY CORPORATION 1995
LT1182 LCD Contrast Positive to Negative/Charge Pump Converter
C13
2.2µF
35V
BAT
8V TO 28V
NEGCON
|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
5V
R10
10k
1%
R9
4.99k
1%
C4
2.2µF
V
IN
≥ 3V
+
R11
20k
1%
C9
0.01µF
L3
CTX50-4
COILTRONICS CTX50-4
D4
1N914
C11
22µF
35V
D5
1N914
+
+
C11
22µF
35V
1182 TA14
PART NUMBER FREQUENCY SWITCH CURRENT DESCRIPTION
LT1107 63kHz 1A Micropower DC/DC Converter for LCD Contrast Control
Hysteretic
LT1172 100kHz 1.25A Current Mode Switching Regulator for CCFL or LCD
Contrast Control
LT1173 24kHZ 1A Micropower DC/DC Converter for LCD Contrast Control
Hysteretic
LT1186 200kHz 1.25A CCFL Switching Regulator with DAC for “Bits to
Brightness Control”
LT1372 500kHz 1.5A Current Mode Switching Regulator for CCFL or LCD
Contrast Control
Dimensions in inches (millimeters) unless otherwise noted.
PACKAGE DESCRIPTION
U
0.016 – 0.050
0.406 – 1.270
0.010 – 0.020
(0.254 – 0.508)
× 45°
0° – 8° TYP
0.008 – 0.010
(0.203 – 0.254)
*THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.
MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.006 INCH (0.15mm).
1
2
3
4
5
6
7
8
0.150 – 0.157*
(3.810 – 3.988)
16
15
14
13
0.386 – 0.394*
(9.804 – 10.008)
0.228 – 0.244
(5.791 – 6.197)
12
11 10
9
0.053 – 0.069
(1.346 – 1.752)
0.014 – 0.019
(0.355 – 0.483)
0.004 – 0.010
(0.101 – 0.254)
0.050
(1.270)
TYP
S Package
16-Lead Plastic SOIC
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