Rainbow Electronics MAX783 - Manual (Page 21)

MAX783
Triple-Output Power-Supply Controller
for Notebook Computers
______________________________________________________________________________________ 21
Figure 6. MAX783 EV Kit Schematic
MAX783
N3
VPPA VPPB
31 10 11 9
VPPA VPPB
VDD BST3 28
29
V+
VL
D1B
33
DH3
32
LX3
C11 0.1
µ F
N4
+15OUT
D3
C12
2.2
µ F
L2
10
µ H
D6 18V
C5 150
µ F
C6 150
µ F
D5
30
DL3
35
CS3
+3.3OUT
34
FB3
C14 0.01
µ F
36
SS3
R12 OPEN
R14 560
Ω
TO VL
5
VH
8
RDY5
7
Q1
6
Q2
VH RDY5 Q1 Q2
14
SYNC
13
REF
SYNC REF
R13 100k
C15 1
µ F
SW2D
PGND
GND
12
26
BST5 DB0 DH5 LX5 DL5 CS5 FB5
18 24 22 23 25 21 27
C10
0.1
µ F
N1 N2
D2 L1
10
µ H
R2
20m
Ω
R1
25m
Ω
C3
330
µ F
C4
330
µ F
+5OUT
DA0
16
DA1
15
DB1
17
DB0 DA0 DA1 DB1
A
BC
D
R5
R4
R6
R3
D1A
A
BC
R11
R10
R9
SW2
SW1
+V
IN
C1
33
µ F
SS5
20
ON3
1
ON5
19
SHDN
2
D1
3
ON3 ON5
SHDN
D1 D2
R8
R7
R3 - R11 = 1M
Ω
VL
C2 33
µ F
C7 4.7
µ F
C8 1
µ F
C9 1
µ F
C13
0.01
µ F
4
D2