US3018
TYPICAL APPLICATION
R22
12V
L1
C8
R12
C10
R13
C14
5V
C2
C3
1
V12
20
OCSet1
Q3
Q4
UGate1 24
L3
8 V5
Phase1 23
LGate1 22
Vout1
1.8V - 3.5V
C16
R14
C19
C13
R16
R15
R21
10 Fault/Rt
PGnd 21
Vsen1 19
Fb1 18
R17
C15
R19
3.3V
12 Vin2
En 17
U1
C1
PGood
7
PGood
Q2
15 Gate3
16 Fb3
R5
Vout3
1.5V
VID0
VID1
VID2
VID3
VID4
6
5
4
3
2
C17
C18
R6
Vout4
2.5V
13 Vout2
Fb2
11
Gnd
14
SS
9
R7
R8
3018app1-1.6
5V
C9
Figure 2 - Typical application of US3018 for an on board DC-DC converter providing power for the Vcore
, GTL+ & Clock supply for the Deschutes and the next generation processor applications.
Rev. 1.4
12/8/00
4-7