LX1676(2005) 데이터 시트보기 (PDF) - Microsemi Corporation
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LX1676 Datasheet PDF : 16 Pages
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LX1676
TM
®
Mobile AMD Athlon™ VRM Controller
PRODUCTION DATA SHEET
APPLICATION CIRCUITS
CORE FB-
CORE FB-
C2
4700pF
R2 61.9K
R3 61.9K
C3
4700pF
R4 4.02K
R5 4.02K
CR3
UPS5817
C12
0.22µF
+5VP
C13
47µf
6.3v
Q3
IRF7811W
CR1
SK32
L3 70µH
CR2
SK32
Q4
IRF7811W
38 37 36 35 34 33 32 31 30
1
R6 4.02K
2
+5VP
C5
0.22µF
R7 100K 3
4
5
C4
4700pF
6
Q1
NDS7002A
7
C7 10µF
25V
8
Q2
NDS7002A
VBAT
9
R10 45.3K 10
FB-
DFOUT
EO1
EA1-
DACOUT
PWRGD
GND
VIN
ROSC
ENA
LX1676
29
VC3
VC1 28
27
HO1
VS1 26
25
LO1
24
PGN
23
LO2
22
VCCL
21
I-MIN
PGN3 20
C11 4.7µF
6.3V
C10 4.7µF
6.3V
+5VP
C4
UPS5817
VBAT
C15
0.22µF
Q5
IRF7811W
C19
10µF
25V
C20
10µF
25V
C21
10µF
25V
C105
10µF
L1 3.3µH
Q6
IRF7822
Q7
IRF7822
CR8 N/U
PWRGD
EN
VID(4)
VID(3)
VID(2)
VID(1)
VID(0)
R13 100K
R14 100K
R15 100K
R16 100K
R17 100K
2.5V
11 12 13 14 15 16 17 18 19
R21 10 Ohm +5VP
C8 4.7µF
6.3V
C9 4.7µF
6.3V
+5VP
CR5
UPS5817
C17
0.22µF
VBAT
Q8
IRF7811W
C22
10µF
25V
C23
10µF
25V
C24
10µF
25V
C104
10µF
L2 3.3µH
Q9
IRF7822
Q10
IRF7822
CR7 N/U
VBAT
C18
10µF
25V
+5VP
C103
47µF
6.3V
NOTE:
Q7 & Q10 Optional
C25 Several Capacitors Under Processor Socket
Figure 2– Typical VRM Application
VCORE
C25
VCORE
RTN
Copyright © 2000
Revision: 1.0, 4/12/2005
Microsemi
Integrated Products Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 8
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