8

 2007 Semtech Corp.

www.semtech.com

SC2603A

POWER MANAGEMENT

Applications Information (Cont.)

Typical application schematic with 12V input and 24V/1A output

Bill of materials

Item Quantity Reference

Part

Vendor

1

1

C1

220uF/16V

Panasonic

2

1

C2

330uF/35V

Nichicon, VR

3

2

C3,C10

1uF/16V

Vishay

4

1

C4

0.1uF

Vishay

5

1

C5

120pF

Vishay

6

1

C11

1uF/50V

Vishay

7

1

Cc

56nF

Vishay

8

1

D1

CMSH2-40M

Central Semi

9

1

L1

33uH/5.1A (HC8-330)

Coiltronics

10

1

Q1

IRF7821

IR

11

1

R1

2R2

Vishay

12

1

R2

226k

Vishay

13

1

R4

12.4k

Vishay

14

1

R5

1k

Vishay

15

1

R6

20m

Vishay

16

1

Rc

2.3k

Vishay

17

1

U1

SC2603A

Semtech

C4

0.1uF

C5

120pF

U1

SC2603A

1

2

3

4

5

6

FB

GND

EN/SS

GATE

VIN

CS

220uF

Cc

56nF

12V INPUT

R6

20m

24V/1A OUTPUT

R4

12.4k

Rc

2.3k

R2

226k

330uF

L1

33uH

1

2

C10

1uF

R1

2R2

D1

CMSH2-40M

Q1

IRF7821

C11

1uF

R5

1k

C3

1uF