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LT1184CS Fiches technique(PDF) 21 Page - Linear Technology

No de pièce LT1184CS
Description  CCFL/LCD Contrast Switching Regulators
PDF  24 Pages
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Fabricant  LINER [Linear Technology]
Site Internet  http://www.linear.com
Logo LINER - Linear Technology

LT1184CS Fiches technique(HTML) 21 Page - Linear Technology

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21
LT1182/LT1183/LT1184/LT1184F
TYPICAL APPLICATIONS N
LT1184F Floating CCFL with Potentiometer Control of Lamp Current
16
15
14
13
12
11
10
9
BAT
8V TO 28V
1
2
3
4
5
6
7
8
ICCFL
DIO
CCFL VC
AGND
SHDN
NC
CCFL VSW
BULB
BAT
ROYER
VIN
REF
NC
CCFL
PGND
NC
LT1184F
LAMP
UP TO 6mA
10
6
L1
R1
750
Ω
L2
100
µH
3
2
1
5
4
+
+
ALUMINUM ELECTROLYTIC IS RECOMMENDED FOR C3B WITH AN
ESR
≥ 0.5Ω TO PREVENT DAMAGE TO THE LT1184F HIGH-SIDE
SENSE RESISTOR DUE TO SURGE CURRENTS AT TURN-ON.
C7, 1
µF
C1*
0.068
µF
D1
1N5818
C5
1000pF
R2
220k
R3
100k
C3A
2.2
µF
35V
C4
2.2
µF
1182 TA03
VIN
≥ 3V
C3B
2.2
µF
35V
C2
27pF
3kV
+
C1 MUST BE A LOW LOSS CAPACITOR, C1 = WIMA MKP-20
Q1, Q2 = ZETEX ZTX849 OR ROHM 2SC5001
L1 = COILTRONICS CTX210605
L2 = COILTRONICS CTX100-4
*DO NOT SUBSTITUTE COMPONENTS
COILTRONICS (407) 241-7876
Q2*
Q1*
SHUTDOWN
0
µA TO 45µA ICCFL CURRENT GIVES
0mA TO 6mA LAMP CURRENT FOR A
TYPICAL DISPLAY.
R5
50k
10 TURN
R4
15.4k
1%
D5
BAT85
NC



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