US3022 参数 Datasheet PDF下载

US3022

TYPICAL APPLICATION

+5Vin

L1

12V

+

R1

2.21K

C5

1UF

28

16

3.3Vin

+

C6

220UF

Q2

IRL3103S

1

25

5.1

24

9

Vout2(1.5V or 3.3V)

+

C13

680uf

21

20

C14

11

TYPE DETECT#

Q4

MJD200

18

19

Vout3 (1.5V)

+

C15

680uf

Q5

MJD200

7

15

6

VID2

14

Vout4(1.8V)

+

C16

680uf

Q6

PMBT2222A

4

10

3

2

17

Vout5(2.5V)

+

C17

220uf

0.1uF

C18

12

13

Fault/Rt

C19

0.1uF

Vref(2V)

5

VID3

VID1

VID0

8

1UF

22

26

R3

Q3

IRL3103S

23

27

5.1

C4

220PF

R2

Q1

IRL3103S

L2

2.5UH

1500uf

C2

+

C3

1UH

+

C1

680uf

1500uf

6MV1500DX

VCORE

+

C7

1500uf

+

C8

1500uf

+

C9

1500uf

+

C10

1500uf

+

C11

1500uf

+

C12

1500uf

6MV1500DX

US3022

5VSB

PGood

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.

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