Hig h -S p e e d , Dig it a lly Ad ju s t e d
S t e p -Do w n Co n t ro lle rs fo r No t e b o o k CP Us
+5V INPUT
V
BATT
6 x 10µF/25V CERAMIC
10V TO 22V
0.1µF
1µF
20Ω
7
15
1
V
DD
V+
V
CC
2Ω
22
24
CMPSH3
BST
0.22µF
DH
IRF7805
REF
9
5
470pF
0.1µF
MAX1711
CC
23
13
10
LX
DL
GND
1µH/20A
OUTPUT
+1.5V AT 15A
ON/OFF
LSB
2
20
19
18
17
16
10X
220µF
4V
20µF
CERAMIC
SHDN
D0
14
PGND
2 x IRF7805
OS-CON
D1
DAC
3
0/MAX71
D2
FB
INPUTS
4
FBS
D3
11
12
GNDS
PGOOD
SKIP
MSB
1k
D4
8
21
TON
N.C.
I
LIM
6
40k
1%
2N7002
POWERGOOD
200k
1%
2N7002
+3.3V
0.1µF
TRANSITION DETECTOR
100k
1%
49.9k
1%
3M
12
14
11
A4
B4
V
CC
1k
13
Y4
Y3
100k
1%
1000pF
1N4148
9
A3
B3
1k
10
8
6
3
MAX986
820pF
5%
1000pF
1N4148
+3.3V
4
5
47CH86
2N7002
30k
A2
B2
1k
Y2
Y1
30k
1000pF
1N4148
1N4148
1
2
A1
B1
1k
GND
7
100k
100k
2N7002
1000pF
2N7002
TIMER BLOCK
Figure 10. 15A Dynamically Adjustable Notebook CPU Supply with Battery-Surge Current Limiting
24 ______________________________________________________________________________________
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
