ADP3153 View Datasheet(PDF) - Analog Devices

Part Name

Description

Manufacturer

ADP3153

5-Bit Programmable Dual Power Supply Controller for Pentium II Processor

Analog Devices 

ADP3153

100k⍀

␮P

SYSTEM

VO2 1

+3.3V

1A

2

RTN

IRL2703

1000␮F

RPROG

35k⍀

R3

20k⍀

22⍀

ADP3153

1 VID1

VID0 20

2 VID2

PGND 19

3 VID3

NC 18

4 VID4

DRIVE1 17

5 AGND

DRIVE2 16

6 SD

VCC 15

7 FB

PWRGD 14

8 NC

CMP 13

9 VLDO

CT 12

10 SENSE– SENSE+ 11

NC = NO CONNECT

22␮F

1␮F

IRL3103

R1

150k⍀

IRL3103

R2

39k⍀

2nF

CCOMP

CT

150pF

220⍀

1nF

220⍀

2700␮F ؋3

(10V)

L2

1.7␮H

1␮F

L1

2.5␮H

RSENSE

6.7m⍀

2700␮F ؋ 6

(10V)

10BQ015

Figure 2. Typical VRM8.2 Compliant Core DC/DC Converter Circuit

VIN +12V

VCC +5V

+5V RTN

+12V RTN

VO

1.8V–3.5V

0-14A

RTN

SD 6

VCC DRIVE1 DRIVE2 PGND AGND PWRGD SENSE+ SENSE–

15

5

14

11

10

ADP3153

NONOVERLAP

DRIVE

CROWBAR

IN

OFF

VREF +15%

DELAY

VREF +5% VREF –5%

CMPI

REFERENCE

2R

1.20V

S

Q

R

VT2

VT1

gm VREF

R

CMPT OFF-TIME

CONTROL

VIN

SENSE–

12

13

CT

CMP

DAC

Figure 3. Functional Block Diagram

9 VLDO

FB

VID0

1 VID1

2 VID2

3 VID3

4 VID4

–4–

REV. 0

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