sc1152 Semtech Corporation, sc1152 Datasheet - Page 4

• Manufacturer Part Number: sc1152
• Description: Programmable Synchronous Dc/dc Controller For Advanced Processors
• Manufacturer: Semtech Corporation

April 28, 1998
APPLICATION CIRCUIT
MATERIALS LIST
Quantity
4
9
1
1
2
1
1
1
1
1
1
© 1998 SEMTECH CORP.
0.1uF
5V IN
C1
1000uF
C2
Reference
C1,C11-C13 0.1µF Ceramic
C2-C10
D1
L1
Q1, Q2
R1
R2
R3
R4
R5
U1
+
1000uF
C3
12V IN
OVP
VID0
VID1
VID2
VID3
VID4
SHUTDOWN
PWRGOOD
+
1000uF
C4
+
R2
10k
C13
0.1uF
Part/Description
1000µF/6.3V
1N5817
4µH
See notes
5m
10k , 5%, 1/8W
2.32k , 1%, 1/8W
1k , 1%, 1/8W
10 , 5%, 1/8W
SC1152CS
R5
10
20
19
18
17
14
10
2
3
1
9
U1
SC1152CS
VCC
OVP
VID0
VID1
VID2
VID3
SHUTDOWN
GND
PGNDL
NC
PWRGOOD
PROGRAMMABLE SYNCHRONOUS DC/DC
CONTROLLER FOR ADVANCED PROCESSORS
VOSENSE
PGNDH
CS(+)
BSTH
BSTL
CS(-)
VID4
DH
DL
Vendor
Various
Various
See notes
IRC
Various
Various
Various
Various
SEMTECH
SANYO
6
5
15
4
16
13
8
7
11
12
Q1
Figure 1.
Q2
Notes
MV-GX or equiv. Low ESR
8 Turns 16AWG on MICROMETALS T50-52D core
FET selection requires trade-off between efficiency
and cost. Absolute maximum R
OAR-1 Series
652 MITCHELL ROAD NEWBURY PARK CA 91320
R3 2.32k
C11
0.1uF
D1
1N5817
R4
4 uH
1.00k
L1
Pentium
R1
5mOhm
®
C5
1000uF
ll Power Supply
+
C6
1000uF
+
C7
1000uF
+
1000uF
DS(ON)
C8
+
C9
1000uF
1000uF
+
= 22 m
C10
+
C12
0.1uF
SC1152
VCCP
4