8
SC1205
C16
22u,10V
GND
BG
BST
TG
3
8
DRN
GND
BG
B120
B119
B118
B117
B116
B115
B114
B113
B112
B111
B110
B109
B108
B107
B106
B105
B104
B103
B102
B101
B100
B99
B98
B97
B96
B95
B94
B93
B92
B91
B90
B89
B88
B87
B86
B85
B84
B83
B82
B81
B80
B79
B78
B77
B76
B75
B74
B73
B72
B71
B70
B69
B68
B67
B66
B65
B64
B63
B62
B61
B60
B59
B58
B57
B56
B55
B54
B53
B52
B51
B50
B49
B48
B47
B46
B45
B44
B43
B42
B41
B40
B39
B38
B37
B36
B35
B34
B33
B32
B31
B30
B29
B28
B27
B26
B25
B24
B23
B22
B21
B20
B19
B18
B17
B16
B15
B14
B13
B12
B11
B10
B9
B8
B7
B6
B5
B4
B3
B2
B1
VID[0]
VID[3]
$PIN238
VCC_L2
$PIN236
$PIN235
$PIN234
VCC_L2
$PIN232
$PIN231
$PIN230
VCC5
$PIN228
$PIN227
$PIN226
VCC_CORE
$PIN224
$PIN223
$PIN222
$PIN221
$PIN220
$PIN219
$PIN218
VCC_CORE
$PIN216
$PIN215
$PIN214
VCC_CORE
$PIN212
$PIN211
$PIN210
VCC_CORE
$PIN208
$PIN207
$PIN206
VCC_CORE
$PIN204
$PIN203
$PIN202
$PIN201
$PIN200
$PIN199
$PIN198
VCC_CORE
$PIN196
$PIN195
$PIN194
VCC_CORE
$PIN192
$PIN191
$PIN190
VCC_CORE
$PIN188
$PIN187
$PIN186
VCC_CORE
$PIN184
$PIN183
$PIN182
$PIN181
$PIN180
$PIN179
$PIN178
VCC_CORE
$PIN176
$PIN175
$PIN174
VCC_CORE
$PIN172
$PIN171
$PIN170
VCC_CORE
$PIN168
$PIN167
$PIN166
VCC_CORE
$PIN164
$PIN163
$PIN162
$PIN161
$PIN160
$PIN159
$PIN158
VCC_CORE
$PIN156
$PIN155
$PIN154
VCC_CORE
$PIN152
$PIN151
$PIN150
VCC_CORE
$PIN148
$PIN147
$PIN146
VCC_CORE
$PIN144
$PIN143
$PIN142
$PIN141
$PIN140
$PIN139
$PIN138
VCC_CORE
$PIN136
$PIN135
$PIN134
VCC_CORE
$PIN132
$PIN131
$PIN130
VCC_VTT
$PIN128
$PIN127
$PIN126
VCC_VTT
$PIN124
$PIN123
$PIN122
$PIN121
VID[1]
VID[2]
GND
$PIN116
$PIN115
$PIN114
GND
$PIN112
$PIN111
$PIN110
GND
$PIN108
$PIN107
$PIN106
GND
$PIN104
$PIN103
$PIN102
GND
$PIN100
$PIN99
$PIN98
GND
$PIN96
$PIN95
$PIN94
GND
$PIN92
$PIN91
$PIN90
GND
$PIN88
$PIN87
$PIN86
GND
$PIN84
$PIN83
$PIN82
GND
$PIN80
$PIN79
$PIN78
GND
$PIN76
$PIN75
$PIN74
GND
$PIN72
$PIN71
$PIN70
GND
$PIN68
$PIN67
$PIN66
GND
$PIN64
$PIN63
$PIN62
GND
$PIN60
$PIN59
$PIN58
GND
$PIN56
$PIN55
$PIN54
GND
$PIN52
$PIN51
$PIN50
GND
$PIN48
$PIN47
$PIN46
GND
$PIN44
$PIN43
$PIN42
GND
$PIN40
$PIN39
$PIN38
GND
$PIN36
$PIN35
$PIN34
GND
$PIN32
$PIN31
$PIN30
GND
$PIN28
$PIN27
$PIN26
GND
$PIN24
$PIN23
$PIN22
GND
$PIN20
$PIN19
$PIN18
GND
$PIN16
Reserved
THERMTRIP#
GND
TESTHI
PWRGOOD
TDO
GND
TDI
IGNNE#
FERR#
GND
A20M#
IERR#
VCC_VTT
GND
VCC_VTT
A120
A119
A118
A117
A116
A115
A114
A113
A112
A111
A110
A109
A108
A107
A106
A105
A104
A103
A102
A101
A100
A99
A98
A97
A96
A95
A94
A93
A92
A91
A90
A89
A88
A87
A86
A85
A84
A83
A82
A81
A80
A79
A78
A77
A76
A75
A74
A73
A72
A71
A70
A69
A68
A67
A66
A65
A64
A63
A62
A61
A60
A59
A58
A57
A56
A55
A54
A53
A52
A51
A50
A49
A48
A47
A46
A45
A44
A43
A42
A41
A40
A39
A38
A37
A36
A35
A34
A33
A32
A31
A30
A29
A28
A27
A26
A25
A24
A23
A22
A21
A20
A19
A18
A17
A16
A15
A14
A13
A12
A11
A10
A9
A8
A7
A6
A5
A4
A3
A2
A1
© 1999 SEMTECH CORP.
1
2
3
4
5
6
Figure 3-SC1205 Evaluation
Board
PRELIMINARY - December 7, 1999
HIGH SPEED SYNCHRONOUS POWER
MOSFET DRIVER
652 MITCHELL ROAD NEWBURY PARK CA 91320
SC1205
7
B121
VCC_L2
A121
VID[4]
J1
INPUT
C5 C6 C7
9
10
11
12
13
14
15
16
1u,16V
1u,16V
1u,16V
S1
Vout/Clk switch
+5V
*
OPTIONAL
Title
Size
8
7
6
5
4
3
2
1
100UF
.1
C8
1000uf,16V
+5V
+12V
EN
.01
C26
100
R7
.1
C27
35k
R10
U1
C23
300k
R11
6k
R8
.022
C25
1u,10V
C28
51
51
51
51
R12
R13
R14
R15
22u,10V
C36
22u,10V
C32
10
R9
.022
3.9k
R6
10
OC-
9
OC+
8
Vid4
7
Vid3
6
Vid2
5
Vid1
4
Vid0
35k
R10
SC1142CSW
FB
Comp
11
Bgout
13
FBG
12
VOUT
14
4
5
6
Drv0
GND
Enable
15
EN
4
16
10
5
17
C9
10uf
C11
10k
C12
10
R1
R38
2
vcc5v
1
3
Rref
Vcc12v
18
10
1000uf
C10
NC
Drv1
19
R44
Vcc5v
Outv
20
Long PCB Trace
R43
6
VIN
C55
.1
.1 5819
C57
U11
EN
D11
D10
VS
EN
C15
1u,10V
5819
CO
VS
EN
CO
SC1205
U12
BST
TG
3
DRN
7
1
2
7
1
2
C31
C4
22u,10V 1u,10V
0 R41
0 R39
R42
0
R40
VIN
0
4.7
R45
IR7811
4.7
R45
Q2
*
*
VOUT
22u,10V
C24
22u,10V
C22
VIN
IR7811
Q4
Q3
Q1
FDB7030
FDB7030
*
*
D2
D1
.1
.1
C58
.6uh
L2
.6uh
L1
SS12
SS12
C56
1500uf
C17
1500uf
C30
22u,10V
C29
22u,10V
C21
22u,10V
C20
22u,10V
C19
22u,10V
C18
22u,10V
C14
22u,10V
C13
B
SC1142EVB-A
Date:
Tuesday, June 29, 1999
Sheet
1
of
1
Document Number
PentiumII
SC1142-1205 Evaluation Board
Rev
N/C
SEMTECH [ SEMTECH CORPORATION ]
