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US3018 View Datasheet(PDF) - Unisem
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US3018
5 BIT PROGRAMMABLE SYNCHRONOUS BUCK PLUS LDO CONTROLLER AND 200mA LDO ON BOARD
Unisem
US3018 Datasheet PDF : 17 Pages
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US3018
TYPICAL APPLICATION
12V
5V
C2
L1
C3
3.3V
C1
R22
C8
R12
C10
C14
1
20
V12
OCSet1
R13
UGate1 24
Q3
8 V5
C19
Phase1 23
R14
LGate1 22
Q4
10 Fault/Rt
PGnd 21
Vsen1 19
Fb1 18
R19
12 Vin2
U1
En 17
L3
C13
C16
R15
R16
R21
R17
C15
Vout1
1.8V - 3.5V
Vout3
1.5V
Q2
C17
Vout4
2.5V
C18
15 Gate3
PGood 7
R5
16 Fb3
VID0 6
R6
VID1 5
VID2 4
VID3 3
13 Vout2
VID4 2
Fb2 Gnd SS
R7
11
14
9
3018app1-1.6
5V
R8
C9
PGood
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
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