PROGRAMMABLE, HIGH PERFORMANCE

MULTI-PHASE, PWM CONTROLLER

SC1144

© 1999 SEMTECH CORP.

652 MITCHELL ROAD NEWBURY PARK CA 91320

Preliminary - August 24, 1999

8

The SC1144 is patent pending

BILL OF MATERIAL

Item Qty

Reference

Value

Manufacturer

1

11

C2,C34,C36,C37,C38,C40,C42,C44,C45,C46,C47

1u,10V

AVX (818)883-7606

X7R

2

15

C3,C4,C5,C6,C7,C8,C10,C12,C15,C17,C22,C25,C39,C41,C

43

22u,10V

Murata (512)250-5082

PN #GRM235Y5V226Z010

3

2

C27,C31

.01u

AVX,Murata,Nichicon

4

2

C29,C28

100UF, 6.3v

Murata,Al. Elec.

5

1

C30

10uf, 6.3v

Murata,Al. Elec.

6

1

C32

.001

Murata

7

1

C33

.01u

Murata

8

1

C35

1000UF, 6.3v

Murata,Al. Elec.

9

1

C48

.1u

Murata,X7R

10

4

D1,D2,D3,D4

835L

Motorola

11

1

J1

INPUT

12

1

J2

osc

13

4

L1,L2,L3,L4

300nH, 8Amp

or 450nH, 8Amp

Falco (305)662-7276

PN #T025A2 or TO25O2

13A

4

L1,L2,L3,L4

300nH, 6Amp

Steward

PN# DI2220V301R-00

14

4

Q1,Q4,Q7,Q10

FMMT618

Zetex

15

4

Q2,Q5,Q8,Q11

20N03HL

Motorola

16

4

Q3,Q6,Q9,Q12

FMMT718

Zetex

19

2

R2,R9

10

Dale,any

20

6

R3,R5,R6,R8,R19,R20

2.2

Dale

21

1

R4

680

any

22

1

R7

250

any

23

1

R10

8.2k

any

24

1

R11

2.32k

any

25

1

R12

3k

any

26

4

R13,R14,R15,R16

51, 1/4W, 1206

Dale

27

1

R17

300k

any

28

1

R18

4.75k

any

29

4

R21,R22,R25,R26

10K

any

30

1

S1

Vout/Clk switch C&K

(800)cal-swch

31

1

U1

SC1144ABCSW

Semtech (805)498-2111

32

1

U2

PentiumII conn.

Foxconn (714)256-1880

Unless otherwise noted, all resistors are 1/10W, 5%, 0805 and all capacitors are 20%, 50v, 0805.