Rainbow Electronics MAX1712 - Manual (Page 24)

MAX1710/MAX1711/MAX1712
High-Speed, Digitally Adjusted
Step-Down Controllers for Notebook CPUs
IRF7805
OUTPUT
+1.5V AT 15A
10x
220
µF
4V
OS-CON
2 x IRF7805
CMPSH3
6 x 10 µF/25V CERAMIC
0.1 µF
1 µH/20A
1k
2
7
1
5
4
10
9
13
12
+3.3V
3M Ω
1N4148
1N4148
1N4148
TRANSITION DETECTOR
1N4148
100k
1%
100k
1%
820pF
5% +3.3V
30k
100k 100k 2N7002
2N7002
POWERGOOD 2N7002
40k
1%
200k
1%
2N7002
TIMER BLOCK
2N7002
30k
49.9k
1%
0.1 µF
REF
CC
GND
SHDN
D0
D1
D2
D3
D4
TON
N.C.
5
9
10
2
20
19
18
17
16
8
6
21
12
11
1k
4
3
14
13
23
24
22
1 15 7
+5V INPUT
V BATT
10V TO 22V
I LIM
SKIP
PGOOD
GNDS
FBS
FB
PGND
DL
LX
DH
BST
V CC
V DD V+
0.22 µF
0.1 µF 1 µF
2 Ω
20 µF
CERAMIC
20 Ω
470pF
1000pF
1k
1000pF
1k
1000pF
1k
1000pF
GND
B1
A1
B2
A2
B3
A3
B4
A4
3
6
8
11
14
Y1
Y2
Y3
Y4
V CC
MAX1711
MAX1712
MAX986
74HC86
ON/OFF
LSB
MSB
DAC
INPUTS
Figure 10.15A Dynamically Adjustable Notebook CPU Supply with Battery-Surge Current Limiting
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