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ML4877 Datasheet(PDF) 9 Page - Micro Linear Corporation

Part # ML4877
Description  LCD Desktop Backlight Lamp Driver
PDF  11 Pages
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Manufacturer  MICRO-LINEAR [Micro Linear Corporation]
Direct Link  http://www.microlinear.com
Logo MICRO-LINEAR - Micro Linear Corporation

ML4877 Datasheet(HTML) 9 Page - Micro Linear Corporation

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ML4877
9
Figure 5. 30W Backlight CCFL Inverter with PWM Dimming
R6
7.5k
Ω
B OFF
B ON
GND
PGND
L GATE 2
ON/OFF
L GATE 1
VDD
HVDD
B SYNC OUT
LEA+
AZR
SS CAP
RT
VREF
L ILIM
LEA–
LEA OUT
CT
L RTD
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
ML4877
U2
J1
1
2
3
J2
J3
C2
68pF
C3
68pF
C4
68pF
C5
68pF
C6
68pF
C7
68pF
C8
68pF
C9
68pF
C16
47pF
C19
4.7nF
C18
1nF
C17
4.7nF
C13
1µF
R7
10k
Ω
R8
91k
Ω
R4
6.2k
Ω
C14
1µF
C12
1µF
+
–
R9
143k
Ω
R3
10k
Ω
5
2
3
1
6
8
4
7
J1
1
2
J2
1
2
C11
1µF
C15
1µF
C10
0.033µF
R2
10k
Ω
R6
390k
Ω
R1
10k
Ω
CR2
1N4148
CR3
1N4148
CR4
1N4148
Q3
2N3906
U1B
U1A
R10
10k
Ω
CR1
5.1V
C21
1nF
R13
10k
Ω
C23
1nF
R14
1k
Ω
R15
1k
Ω
R18
200
Ω
R16
20
Ω
R17
20
Ω
Q5
2N3904
Q6
2N3904
Q8
2N3906
Q7
2N3904
Q4
IRF7416
C24
220µF
C20
0.1µF
C22
220µF
F1 4A
T1 1
3
5
12
8
4, 10
9
C1
0.22µF
MKS-10
63V
Q1
IRLR2905
R11
0.2
Ω
1W
R5
30k
Ω
R12
0.2
Ω
1W
Q2
IRLR2905
CR5
CR6
L1
22µH
1
2
3
4
5
6
7
8
9
10
11
1
2
3
4
5
6
7
8
9
10
11
PWM Control
SK34MSCT
1kV
1kV
1kV
1kV
1kV
1kV
1kV
1kV
GND
VDD
DIMMING



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