5
5
4
4
3
3
2
2
1
1
D
D
C
C
B
B
A
A
TRIM3V
VDD33HD
VMONEN
VMON1
VMON4
PGD
PFTL
PFLT_Q
CLRN
PREN
SETVTT
1V_ON
SHDNVTT
BASE_OFF
GATE33
1V_ON
TRIM1V
VDD_VTT
VDD_3.3V
VDD_12V
VDD_3.3V
VDD_1.0V
VDD_3.3V
VDDHD_12V
VDDHD_5V
VDDHD_5V
VDD_1.0V
VDDHD_3.3V
VDDEARLY_3.3V
VDDEARLY_3.3V
VDDHD_3.3V
VDDHD_12V
VDDEARLY_3.3V
VDDEARLY_3.3V
VDD_VTT
VDDEARLY_3.3V
VDDEARLY_3.3V
VDD_12V
VDDHD_12V
VDD_3.3V
VDDEARLY_3.3V
VDDEARLY_3.3V
PERSTN
{4,5,6,7,8}
Title
Size
Document Number
Rev
Date:
Sheet
of
91-0071-004-A
004
PEX8509RDK - Board Power
PLX Technology, Inc.
870 Maude Avenue
Sunnyvale, CA 94085
www.plxtech.com
C
9
9
Thursday, June 14, 2007
Title
Size
Document Number
Rev
Date:
Sheet
of
91-0071-004-A
004
PEX8509RDK - Board Power
PLX Technology, Inc.
870 Maude Avenue
Sunnyvale, CA 94085
www.plxtech.com
C
9
9
Thursday, June 14, 2007
Title
Size
Document Number
Rev
Date:
Sheet
of
91-0071-004-A
004
PEX8509RDK - Board Power
PLX Technology, Inc.
870 Maude Avenue
Sunnyvale, CA 94085
www.plxtech.com
C
9
9
Thursday, June 14, 2007
BOARD POWER ON INDICATOR LEDS
R95 AND R96 CAN BE INSTALLED TO
ADJUST THE OUTPUT VOLTAGE OF U12. SEE
THE MANUFACTURERS DATASHEET FOR
DETAILS.
SLOT POWER FAULT INDICATOR
1.0V REGULATOR
VTT REGULATOR
5V-TO-3.3V DC/DC CONVERTER
ATX 4-PIN HARD
DISK CONNECTOR
U3 MONITORS 12V AND 3.3V POWER GOING
TO J1, J2 AND J3. A FAULT ON EITHER
SUPPLY WILL CAUSE D14 TO LIGHT.
U13 VOUT CAN RANGE FROM 2.8V TO 0.9V,
BY VARING R99 AND R100.
NOTE: THE PCI EXPRESS CEM 1.1 SPEC DOES NOT
ALLOCATE ENOUGH POWER FOR ADD-IN CARDS TO
USE ON FANOUT SLOTS. J5 IS USED TO GENERATE
POWER FOR THE SLOT CONNECTORS J1, J2, AND
J3. THE +12V IS USED DIRECTLY, WHILE THE +5V IS
CONVERTED TO +3.3V VIA U12.
PLACE U3, U15 AND U17 ON SOLDER SIDE.
PLACE D14 ON
COMPONENT SIDE OF
BOARD.
PIN 9 IS A THERMAL PAD
UNDERNEATH U14.
J1/J2/J3 SLOT POWER
PEX 8509 POWER
R100
8.25K 1%
R100
8.25K 1%
R101 100K
R101 100K
2
1
D20
Green
D20
Green
C87
1uF
C87
1uF
R95
NL
R95
NL
IN
1
IN
2
POK
3
SHDN#
4
GND
5
OUT
7
OUT
8
SET
6
THERM
9
U14
MAX1806
U14
MAX1806
R111
75.0K 1%
R111
75.0K 1%
C92
0.1uF
C92
0.1uF
F1
7A
F1
7A
2
1
D16
Green
D16
Green
C78
1uF
C78
1uF
R117
2.74K 1%
R117
2.74K 1%
CLK
1
D
2
Q#
3
GND
4
Q
5
CLR#
6
PRE#
7
VCC
8
U15
SN74LVC2G74
U15
SN74LVC2G74
Vin
2
Vout
4
On/Off
1
Gnd
3
Trim
5
NC
6
NC
7
U12
S7AH-08E1A0
U12
S7AH-08E1A0
C86
0.1uF
C86
0.1uF
1
2
3
Q3
MMBT3904LT1
Q3
MMBT3904LT1
R106
5.1K
R106
5.1K
2
1
D17
Green
D17
Green
VCC
5
GND
3
A
2
Y
4
NC
1
U17
NC7S04
U17
NC7S04
R103
5.1K
R103
5.1K
R113
1K 1%
R113
1K 1%
+
C77
180uF
+
C77
180uF
R96
1.30K, 1%
R96
1.30K, 1%
R109
150
R109
150
+
C76
22uF
+
C76
22uF
+
C82
22uF
+
C82
22uF
R38
2.26K 1%
R38
2.26K 1%
G
1
S
2
D
3
Q5
N-MOS
Q5
N-MOS
C80
1uF
C80
1uF
2
1
D15
Green
D15
Green
R120
0
R120
0
1
2
3
Q6
MMBT3904LT1
Q6
MMBT3904LT1
1
2
3
Q4
MMBT3904LT1
Q4
MMBT3904LT1
R98
NL
R98
NL
+12VDC
1
COM
2
COM
3
+5VDC
4
J5
53113-0410
J5
53113-0410
C83
1uF
C83
1uF
1
2
3
Q7
MMBT3904LT1
Q7
MMBT3904LT1
R114
150
R114
150
R116
NL, 10K
R116
NL, 10K
C90
10uF
C90
10uF
R13
0
R13
0
C91
1uF
C91
1uF
C84
1uF
C84
1uF
C85
10uF
C85
10uF
R104
5.1K
R104
5.1K
C79
10uF
C79
10uF
2
1
D14
Red
D14
Red
R99
1K
R99
1K
1
2
3
Q8
MMBT3904LT1
Q8
MMBT3904LT1
R118
8.25K 1%
R118
8.25K 1%
R119
0
R119
0
R123
1K 1%
R123
1K 1%
C89
0.01uF
C89
0.01uF
R124
NL
R124
NL
R112
7.68K 1%
R112
7.68K 1%
C88
1uF
C88
1uF
VDD
1
PGD
2
EN
3
GND
4
VMON3
6
VMON2
7
VMON1
8
VMON4
5
U3
ISL6536
U3
ISL6536
R110 10K
R110 10K
VIN
4
ADJ
1
VOUT
5
VBIAS
2
GND
3
U13
MIC49150
U13
MIC49150
R107
150
R107
150
R108
150
R108
150
2
1
D18
Green
D18
Green
R102
0
R102
0
R121
5.1K
R121
5.1K
R115
10K
R115
10K
C81
1uF
C81
1uF
R94
5.1K
R94
5.1K
R105
1K
R105
1K
