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LTC1553CG

5-Bit Programmable Synchronous Switching Regulator Controller for Pentium® II Processor

Linear Technology 

LTC1553

APPLICATIONS INFORMATION

VIN

VOUT

+

CIN

Q1

LO

+

COUT

Q2

BOLD LINES INDICATE

HIGH CURRENT PATHS

1 G2 LTC1553 G1 20

PVCC

+

2

PVCC

10µF

+

0.1µF 3

GND

10µF

4 SGND

0.1µF

5 VCC

RIMAX

RIFB

6 SENSE

7

IMAX

8

IFB

9

SS

19

OUTEN

18

VID0

VID0

17

VID1

VID1

16

VID2

VID2

15

VID3

VID3

14

VID4

VID4

13

PWRGD

12

FAULT

10

COMP

CSS

C1

RC

0.1µF

11

OT

CC

5.6k

5.6k

5.6k

1153 F12

Figure 12. LTC1553 Layout Diagram

20

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