US3022 View Datasheet(PDF) - Unisem
Part Name
Description
Manufacturer
US3022 Datasheet PDF : 7 Pages
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TYPICAL APPLICATION
US3022
12V
3.3Vin
+ C6
220UF
Q2
IRL3103S
Vout2(1.5V or 3.3V)
+ C13
680uf
TYPE DETECT#
Q4
MJD200
Vout3 (1.5V)
+ C15
680uf
Q5
MJD200
Vout4(1.8V)
+ C16
680uf
Q6
PMBT2222A
Vout5(2.5V)
+ C17
220uf
+5Vin
L1
C5
1UF
28
16
R1
2.21K
23
27
26
C4
220PF
R2
5.1
+ C2
+
1500uf
1UH
C3
1500uf
6MV1500DX
Q1
IRL3103S
L2 2.5UH
+ C1
680uf
1
25
24
9
22
21
20
11
US3022
R3
5.1
C14
1UF
5VSB
Q3
IRL3103S
+ C7
1500uf
+ C8
1500uf
+ C9
1500uf
+ C10
1500uf
+ C11
1500uf
+ C12
1500uf
18
19
8
PGood
VID0
7
15
VID1
6
VID2
14
5
VID3
4
10
Vref(2V)
3
2
Fault/Rt
17
12 13
C18
C19
0.1uF
The Vref(2V) can be used to provide reference for
the ACPI regulatos. In this application the ACPI
regulators are designed using op-amp and discrete
transistors.
0.1uF
VCORE
6MV1500DX
Figure 2 - Typical application of US3022 for an on board DC-DC converter providing power for the Vcore , GTL+,
1.8V chip set supply, 2.5V clock supply as well as auto select AGP supply for the next generation PC applica-
tions.
Rev. 1.0
11/2/99
4-7
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