SC1189SWTRT Datasheet SC1189SWTRT | P13-P15

13

 2007 Semtech Corp.

www.semtech.com

POWER MANAGEMENT

SC1189

PIN Descriptions

Typical Characteristics

Typical Efficiency (Switching section)

Typical Ripple, Vo=1.75V, Io=10A

2.5V Linear Short circuit output response

Transient Response Vo=1.75V, Io=0A to 28A

Vo=1.25V

1.50V

1.75V

70%

80%

90%

100%

0 5 10 15 20 25 30

Output Current (A)

Efficiency

14 2007 Semtech Corp.

www.semtech.com

POWER MANAGEMENT

SC1189

Typical Application Circuit

+

C19

1500uF

R9 2R2

+

C22

1500uF

R1

10

R24

1k

C27

OPEN

VTT

5V

5VSTBY

VID1

1.8V

C46

0.1uF

R6 2R2

J31

+

C32

330uF

R11

See Table 2

C43

22nF

+

C44

330uF

Q8

IRFR120N

J17

CON4

1

2

3

4

R15

(Ohm)

EMPTY

5.0

2.5

+

C35

330uF

VOUT

1.050

1.075

1.100

1.125

1.150

C10

0.1uF

AGP

R26

100k

R20

1k

1.25V/1.5V VTT

J26

S2

VOUT

1.450

1.475

1.500

1.525

1.550

+

C11

330uF

D2

1N4148

J18

SCOPE TP

R10 2R2

TABLE VALID FOR 2x5mOhm SENSE

RESISTOR

5VSTBY

+

C18

1500uF

VID

3210

0100

0011

0010

C33

0.1uF

C28

0.1uF

R12

1k

12V

+

C38

330uF

C4

0.1uF

J28

R28

4.99k

+

C16

330uF

J24

+

C20

1500uF

OFFSET

mV/V

0

2

VID

25MV

0

1

0

1

0

+

C14

330uF

Q3

IRL2203

VCC_CORE

C40

0.1uF

R29

10k

+

C3

1500uF

R22

390

J14

Clock

R8 5mOhm

R19 5mOhm

L1 1.2uH

VTTSEL

J33

+

C30

330uF

+

C34

330uF

+

C7

1500uF

Q2

IRL3103S

+

C6

1500uF

VID

25MV

0

1

0

1

0

5V

VID

3210

1100

1011

1010

1.175 1.5750010 11 1010

1.200 1.6000001 00 1001

1.225 1.6250001 11 1001

1.250 1.6500000 00 1000

1.275 1.6750000 11 1000

1.300 1.7001111 00 0111

1.325 1.7251111 11 0111

1.350 1.7501110 00 0110

1.375 1.7751110 11 0110

1.400 1.8001101 00 0101

1.425 1.8251101 11 0101

J30

3.3V STBY

C5

0.1uF

+

C36

330uF

Q9

IRFR120N

VTTSEL = 1, VTT = 1.5 V

VTTSEL = 0, VTT = 1.25 V

AGPSEL = 1, AGP=3.3V

AGPSEL = 0, AGP=1.5V

VID3

R25

100k

U2

SC1112CS

3

6

15

12

9

13

14

4

7

2

1

11

5

8

1016

DELAY

ADJGATE

VTTIN

AGPGATE

CAP+

VTTSEN

VTTGATE

VTTSEL

ADJSEN

PWRGD

5VSTBY

AGPSEN

AGPSEL

CAP-

FCGND

+

C21

1500uF

VID0

R5 OPEN

Q1

IRL3103S

+

C15

330uF

R2 10k

U1

SC1189CS

1

5

6

7 8

9

10

11

15

16

17

18

19

20

21

22

13

12

14

24 2

23

34

AGND

VCC

PWRGD

LDOEN CS-

CS+

PGNDH

DH

BSTH

EN

VOSENSE

VID4

VID3

VID2

VID1

VID0

DL

PGNDL

BSTL

GATE2 GATE1

LDOV

LDOS1LDOS2

+

C12

330uF

C29

10uF

C1

0.1uF

Q5 IRLR024N

R3

EMPTY

C41

0.1uF

J15

R21

18k

AGPSEL

J32

+

C37

330uF

ON/OFF

1.8V STBY

Q4

IRL2203

C31

0.1uF

R27 1.00k

J13

CHIPSET

R15

See Table 2

VID2

Q10

IRFR120N

C39

0.1uF

C45

1uF

3.3V STBY

VID25MV

+

C9

1500uF

+

C26

47uF

+

C17

330uF

R11

(Ohm)

0

3.3

10

J2

A

TX M/B MOLEX 39-29-9202

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

3.3V

COM

5V

COM

5V

COM

PWR_OK

5VSB

12V

3.3V

-12V

COM

PS_ON

COM

-5V

5V

DROOP

mV/A

0

1

2

2.02 EMPTY5

12.55 8.31

6.35252

55 EMPTY5

25.010 16.71

12.510 502

10.010 EMPTY5

+

C2

1500uF

R23 442

CHIPSET

J27

+

C8

1500uF

+

C23

1500uF

R7 2R2

1.5V/3.3V AGP (2X/4X)

J29

EN

Q6

IRLR024N

D1

1N4148

C42

0.1uF

2.5V

R4 1.00k

VCC_CORE PWRGD

15

 2007 Semtech Corp.

www.semtech.com

POWER MANAGEMENT

SC1189

Evaluation Board Bill of Materials

metI.ytQecnerefeReulaVsetoN

121

,14C,04C,93C,33C,13C,82C,01C,5C,4C,1C

64C,24C

Fu1.0

221

,12C,02C,91C,81C,9C,8C,7C,6C,3C,2C

32C,22C

Fu0051

roXG-VMoynaSRSEwoL

tnelaviuqe

341

,43C,23C,03C,71C,61C,51C,41C,21C,11C

44C,83C,73C,63C,53C

Fu033

41 62CFu74

61 92CFu01

71 34CFn22

81 54CFu1

92 2D,1D8414N1

011 2JB/MXTA2029-92-93XELOM

61 1LHu2.11S-CCPcinosanaP

72 2Q,1QS3013RLRI

82 4Q,3Q3022LRI

92 6Q,5QN420RLRI

523 01Q,9Q,8QN021RFRI

011 1R01

112 92R,2Rk01

922 72R,4Rk00.1

314 01R,9R,7R,6R2R2

412 91R,8RmhOm51RAOCRI

512 51R,11RelbaTeeS

213 42R,02R,21Rk1

611 12Rk81

711 22R093

631 32R244

732 52R,62Rk001

831 82Rk99.4

811 1USC9811CSHCETMES

141 2USC2111CSHCETMES

SC1189SWTRT

SC1189SWTRT

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