lx1676 Microsemi Corporation, lx1676 Datasheet - Page 8

• Manufacturer Part Number: lx1676
• Description: Mobile Amd Athlontm Vrm Controller
• Manufacturer: Microsemi Corporation

Copyright © 2000
Revision: 1.0, 4/12/2005
CORE FB-
CORE FB-
NOTE:
Q7 & Q10 Optional
C25 Several Capacitors Under Processor Socket
PWRGD
VID(4)
VID(3)
VID(2)
VID(1)
VID(0)
EN
+5VP
NDS7002A
TM
Q2
NDS7002A
0.22µF
C5
Q1
R6 4.02K
C4
4700pF
VBAT
R10 45.3K
C7 10µF
R7 100K
2.5V
25V
R13 100K
R14 100K
R15 100K
R16 100K
R17 100K
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: [phone]
10
1
2
3
4
5
6
7
8
9
FB-
DFOUT
EO1
EA1-
DACOUT
PWRGD
GND
VIN
ROSC
ENA
11
C2
4700pF
38
12
37
VBAT
13
36
C18
10µF
25V
14
LX1676
35
R2 61.9K
15
34
16
33
C3
4700pF
+5VP
R3 61.9K
17
A P P L I C A T I O N C I R C U I T S
R4 4.02K
R5 4.02K
32
C103
47µF
6.3V
Figure 2– Typical VRM Application
18
31
Integrated Products Division
19
VCCL
I-MIN
PGN3
PGN
30
HO1
VC1
VS1
LO1
LO2
VC3
C8 4.7µF
6.3V
R21 10
®
Microsemi
29
28
27
26
25
24
23
22
21
20
Ohm
UPS5817
+5VP
CR3
C12
0.22µF
+5VP
C9 4.7µF
6.3V
C11 4.7µF
6.3V
C10 4.7µF
6.3V
UPS5817
CR5
SK32
CR2
Q3
IRF7811W
C15
0.22µF
Mobile AMD Athlon™ VRM Controller
+5VP
+5VP
C17
0.22µF
UPS5817
C13
47µf
6.3v
C4
Q8
IRF7811W
Q9
IRF7822
Q5
IRF7811W
Q6
IRF7822
SK32
CR1
Q4
IRF7811W
P
RODUCTION
VBAT
VBAT
L3 70µH
C19
10µF
25V
C22
10µF
25V
Q10
IRF7822
Q7
IRF7822
C20
10µF
25V
C23
10µF
25V
C21
10µF
25V
C24
10µF
25V
D
CR7 N/U
CR8 N/U
ATA
C105
10µF
C104
10µF
L1 3.3µH
L2 3.3µH
S
HEET
C25
LX1676
VCORE
VCORE
RTN
Page 8