US3018 Ver la hoja de datos (PDF) - Unisem

Número de pieza

componentes Descripción

Lista de partido

US3018

5 BIT PROGRAMMABLE SYNCHRONOUS BUCK PLUS LDO CONTROLLER AND 200mA LDO ON BOARD

Unisem 

US3018

TYPICAL APPLICATION

(Dual Layout with HIP6018)

12V

5V

C2

L1

C3

R22

R11

3.3V

C1

C8

R12

C10

C14

1

20

V12

OCSet1

R13

UGate1 24

Q3

8 V5

(Fault)

C19

Phase1 23

R14

LGate1 22

Q4

10 Fault/Rt

(Rt)

PGnd 21

Vsen1 19

Fb1 18

12 Vin2

U1

En 17

(Comp1)

C12

C11 R18

L3

C13

R15

R16

R21

C16

R17 C15

R19

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

3018app2-1.6

5V

R8

C20 C9

PGood

Figure 3 - Typical application of US3018 in a dual layout with HIP6018 for an on board DC-DC converter providing

power for the Vcore , GTL+ & Clock supply for the Deschutes and the next generation processor applications.

Components that need to be modified to make the dual layout work for US3018 and HIP6018.

Part # R11 R18 C9

HIP6018 O V

O

US3018 S O

V

C11 C12 C19 C20

V

V

O

V

O

O

V

O

S - Short

O - Open

V - See Unisem or Harris parts list for the value.

Table 2 - Dual layout component table

Rev. 1.4

12/8/00

4-9

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