Rainbow Electronics MAX8759 - Manual (Page 29)

MAX8759
Low-Cost, SMBus, CCFL Backlight Controller
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N2A
19
24
21 1
C7
0.1 µF
C8
1
µF
C1
22
µF
25V
C10
0.1
µF
C11
0.1
µF
C13
6.8nF
C4
10pF
3kV
R1
150
Ω
1%
R14
100k
Ω
R15
100k
Ω
R2
150k
Ω
1%
R8
390k Ω
1%
R7
390k Ω
1%
R9
180k Ω
R10
20k Ω
R12
180k Ω
R13
20k Ω
C17
1nF
C6
1nF
C5
10pF
3kV
C3
2.2 µF
C2
2.2 µF T1
1:110
T2
1:110
HV
LV
2
1
C14
0.22
µF
FDS6990A
FDS6990A
C9
0.47 µF
C12
1
µF
C15
0.1 µF
R3
169k Ω
1%
V CC
27
11
28
2
3
7
8
9
5
6
BATT
GND
DEL
V CC
V CC
SDA
SCL
PWMI
PWMO
FREQ
VALS
ALS
18
17
16
26
20
23
22
25
12
13
15
14
10
4
PGND1
BST2
V DD
BST1
GH1
LX1
LX2
GL1
PGND2
GL2
GH2
IFB1
IFB2
ISEC
VFB
COMP
TFLT
N2B
D3
D4
N1A N1B
PWM INPUT
INPUT VOLTAGE
SMB_DATA
SMB_CLOCK
F1
2A
ALS SUPPLY
ALS OUTPUT
7.5V TO 21V
MAX8759
HV
LV
2
1
Figure 11. Typical MAX8758 Dual-Lamp Operating Circuit