lx1677 Microsemi Corporation, lx1677 Datasheet - Page 8

• Manufacturer Part Number: lx1677
• Description: Amd64 Processor Vrm Controller
• Manufacturer: Microsemi Corporation

Copyright © 2000
Rev 1.1, 2003-03-03
10K
R19
+5VP
NDS7002A
NDS7002A
Q8
Q7
TM
VBAT
C10
C26
C9
10uF
+5VP
4700pF
0.22uF
R11 100K
R12 100K
R13 100K
R14 100K
R15 100K
R10 1.00K
25V
R22
1.00K
R23
1.00K
100K
R9 45.3K
R8
4.02K
R7
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: [phone]
10
11
12
1
2
3
4
5
6
7
8
9
U1
FB-
DFOUT
EO1
EA1-
DACOUT
PWRGD
GND
VIN
ROSC
ENA
VID4
VID3
4700pF
2.00K
C1
R1
Enable
VID 0
VID 0
VID 0
VID 0
PWRGD
VID 0
LX1677 LQ
C2
C3
4700pF
4700pF
R2 61.9K
R3 61.9K
4.7uF
6.3V
4.02K
6.04K
I-MAX
VCCL
PGN3
I-MIN
C7
PGN
VC3
VC1
HO1
VS3
VS1
LO1
LO2
10.0
R6
Figure 2 – Typical VRM Application
R4
R5
31
30
29
28
27
26
25
24
23
22
21
20
A P P L I C A T I O N C I R C U I T S
4.7uF
6.3V
+5VP
C8
4.7uF
4.7uF
6.3V
C24
C25
Integrated Products Division
6.3V
10uF
C30
25V
®
Microsemi
VBAT
C31
10uF
25V
C32
10uF
25V
SI4842DY
SI4842DY
1N5817
CR5
1N5817
C4
Q1
Q2
CR3
+5VP
C5
0.22
0.22
C33
10uF
25V
C6
4.7uF
AMD64 Processor VRM Controller
C14
IRLR8203
IRLR8203
VBAT
IRLR8203
IRLR8203
0.22
6.3V
1N5817
Q6
CR4
Q5
Q4
10uF
C34
25V
Q3
SK32
CR1
CR2
SK32
+5VP
VBAT
VBAT
C13
4.7uF
6.3V
+5VP
IRLR8203
IRLR8203
10uF
C35
25V
P
Q13
Q11
Q10
6.3V
N/U
C11
47uF
Q12
N/U
RODUCTION
C16
10uF
25V
C17
10uF
25V
70nH
L3
10uF
10uF
C28
C29
25V
C22
10uF
25V
C23
10uF
25V
25V
D
2.2uH
2.2uH
L2
L1
ATA
+
C20
270uF
2V
S
+
C18
270uF
2V
HEET
+
C21
270uF
2V
+
C19
270uF
2V
+BATT IN
BATT RTN
+5 RTN
+5 VIN
VCORE
RTN
LX1677
+5VP
VBAT
C12
47uF
6.3V
C15
10uF
25V
C36
10uF
25V
Page 8