參數(shù)資料
型號: LT1184FCS
廠商: LINEAR TECHNOLOGY CORP
元件分類: 穩(wěn)壓器
英文描述: RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS
中文描述: 1.25 A FLUORESCENT LIGHT CONTROLLER, 200 kHz SWITCHING FREQ-MAX, PDSO16
封裝: PLASTIC, SO-16
文件頁數(shù): 20/24頁
文件大?。?/td> 409K
代理商: LT1184FCS
20
LT1182/LT1183/LT1184/LT1184F
TYPICAL APPLICATIO
S
N
U
90% Efficient Grounded CCFL Configuration with Negative Polarity LCD Contrast
BAT
8V TO 28V
NEGCON
1182 TA02
VARYING THE V(CONTRAST)
VOLTAGE FROM 0V TO 5V GIVES
VARIABLE NEGATIVE CONTRAST
FROM –10V TO –30V
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
LCD
PGND
CCFL V
SW
BULB
BAT
ROYER
V
IN
REF
FB
LCD V
SW
CCFL
PGND
LT1183
LAMP
UP TO 6mA
10
6
L1
L3
R1
750
L2
100
μ
H
3
2
+
1
4
5
+
C12
2.2
μ
F
35V
+
+
C7, 1
μ
F
C1*
0.068
μ
F
D1
1N5818
D5
BAT85
D2
1N914
D4
1N914
V (PWM)
0V TO 5V
1kHz PWM
SHUTDOWN
C8,0.68
μ
F
R7, 10k
R4
38.3k
1%
C5
1000pF
R2
220k
R3
100k
C3A
2.2
μ
F
35V
C11
22
μ
F
35V
V (CONTRAST)
0V TO 5V
R11
40.2k
1%
R10, 10k, 1%
C4
2.2
μ
F
V
IN
3V
D3
1N5934A
24V
C3B
2.2
μ
F
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
L3 = COILTRONICS CTX02-12403
*
DO NOT SUBSTITUTE COMPONENTS
COILTRONICS (407) 241-7876
THE I
CURRENT REQUIRED FOR AN
RMS BULB CURRENT IS:
I
(9
×
10
–3
) (I
).
0% TO 90% DUTY CYCLE FOR THE PWM
SIGNAL CORRESPONDS TO 0 TO 6mA.
Q2*
Q1*
N = 1:2
C6
2.2
μ
F
R5,38.3k, 1%
R9, 4.99k, 1%
D5
1N4148
C10
0.1
μ
F
6
4
2
9
C9
0.01
μ
F
+
+
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