LT1184F_15 Datasheet, PDF (24/24 Pages) Linear Technology – CCFL/LCD Contrast Switching Regulators

LT1182/LT1183/LT1184/LT1184F
TYPICAL APPLICATIONS N
LT1182 LCD Contrast Positive to Negative/Charge Pump Converter
C8
0.068µF
R7
33K
1 _CCFL
PGND
2
I_CCFL
16
CCFL V_SW
15
BULB
3
DIO
14
BAT
4
LT1182
13
CCFL V_C
ROYER
5
AGND
12
V_IN
6
SHDN
11
FBP
7
LCD V_C
8 _LCD
PGND
10
FBN
9
LCD V_SW
5V
+ _C13
2.2µF
35V
V_IN
+
≥ 3V
C4
2.2µF
C9
0.01µF
L3
CTX50-4
COILTRONICS CTX50-4
C11
22µF
35V
D5
1N914
D4
1N914
R9
4.99k
1%
R10 ^R11
10k ^20k
1%
1%
BAT
8V TO 28V
C11
22µF
35V
NEGCON
|V_OUT| ≥ V_IN
1182 TA14
RELATED PARTS
PART NUMBER
LT1107
LT1172
LT1173
LT1186
LT1372
FREQUENCY
63kHz
Hysteretic
100kHz
24kHZ
Hysteretic
200kHz
500kHz
SWITCH CURRENT
1A
1.25A
1A
1.25A
1.5A
DESCRIPTION
Micropower DC/DC Converter for LCD Contrast Control
Current Mode Switching Regulator for CCFL or LCD
Contrast Control
Micropower DC/DC Converter for LCD Contrast Control
CCFL Switching Regulator with DAC for “Bits to
Brightness Control”
Current Mode Switching Regulator for CCFL or LCD
Contrast Control
PACKAGE DESCRIPTION Dimensions in inches (millimeters) unless otherwise noted.
S Package
16-Lead Plastic SOIC
0.010
(0.254
–
–
0.020
0.508)
×
45°
0.008 – 0.010
(0.203 – 0.254)
0.053 – 0.069
(1.346 – 1.752)
0° – 8° TYP
0.016 – 0.050
0.406 – 1.270
0.014 – 0.019
(0.355 – 0.483)
*THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.
MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.006 INCH (0.15mm).
0.050
(1.270)
TYP
0.004 – 0.010
(0.101 – 0.254)
0.386 – 0.394*
(9.804 – 10.008)
16 15 14 13 12 11 10 9
0.228 – 0.244
(5.791 – 6.197)
0.150 – 0.157*
(3.810 – 3.988)
1
2
3
4
5
6
7
8
24 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7487
[phone] ^q FAX: [phone] ^q TELEX: 499-3977
LT/GP 0495 10K • PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 1995