Rainbow Electronics MAX1531 - Manual (Page 14)

MAX1530/MAX1531
Multiple-Output Power-Supply Controllers for
LCD Monitors
14 ______________________________________________________________________________________
MAX1531
N1-A
N1-B
V IN = 12V
VL
ONL2
ONL3
ONL4
ONL5
FREQ
SEQ
RESET
EN IN
BST
DH
LX
DL
PGND
DRV1
FBL1
FB
COMP
DRV3
FBL3
ILIM
DRV5
FBL5 FBL4
DRV4
CSH
CSL
FBL2
DRV2
RSTIN
30
28
26
25
12
16
17
18
19
1
2
6
5
8
7 9
10
15
4
3
13
14
11
31
32
20
21
22
23
27
24
29
AGND
C3
4.7 µF
25V
R4
20.0k Ω
1%
D1 R5*
10 Ω
C1
1
µF
C5
0.1 µF
C4
1 µF
C10
470pF
C9
10
µF
6.3V
C7
22
µF
6.3V
C23
150pF
C22
2.2
µF
R11
100k Ω
R9
10k Ω
1%
R8
6.8k Ω
R10
10k Ω
1%
R14
121k
Ω
1%
R15
68.1k
Ω
1%
R16
43.2k
Ω
1%
R17
6.8k Ω
R18
68.1k Ω
1%
R20
0.5 Ω
1%
R22
75k Ω
1%
R19
10k
Ω
1%
R23
10.7k
Ω
1%
C11
0.1
µF
C20
0.1 µF
C21
2.2 µF
C13
4.7 µF
16V
C12
0.47
µF
R29
48.7k Ω
1%
R28
90.9k Ω
1%
R25
200k Ω
1%
R26
10.5k Ω
1%
R27
6.8k
Ω
C19
0.47
µF
* OPTIONAL
C16
0.47
µF
C15
0.1
µF
C8
0.1
µF C6
0.1
µF
C14
0.1 µF
C18
0.1
µF C17
0.1 µF
Q5
Q3
R24
6.8k
Ω
R13
150k
Ω
R12
300k
Ω
R2
10.7k
Ω
1%
R1
17.8k
Ω
1%
L1
10 µH
R7
100k Ω
R3
124k
Ω
1%
R12
1 Ω
R6*
10 Ω
D2*
C2, OPEN
Q6
Q4
Q2
Q1
D3
D5
IN
VL
VL
V IN
V IN
V OUT
3.3V/1.5A
LX
LX
V L
5V/30mA
V LOGIC
2.5V/500mA
V GOFF
-9V/50mA
V GON
25V/20mA
V GAMMA
9.7V/50mA
V SOURCE
10V/500mA
IN
V IN
D6
D4
R21
1.5k
Ω
Figure 1. MAX1531 Standard Application Circuit