4

Nov3-06 Rev AE

SP7662 Wide Input Voltage Range 2A, 300kHz Buck Regulator

© 2006 Sipex Corporation

APPLICATIONS INFORMATION

5-22Vin

SD101AWS

3.30V, 0-12A

NP

R6

NP

GND

C7

NP

C5

100uF

VOUT

U1

SP7662

CZ2

22nF

Rs1

1 Ω

Rs2

1 Ω

C9 6.8nF

CP1 100pF

D1

RBST

C3

22uF

C1

22uF

R7

NP

C8

NP

R1

10kΩ,1%

R8 NP

CBST

22nF

R11

10Ω,1%

Cs1

2.2nF

Cs2

2.2nF

C2

22uF

CVCC

4.7uF

GND

RZ3

499Ω,1%

R3

5.11KΩ

DBST

R9

60kΩ

RZ2

2KΩ,1%

R2

3.2kΩ,1%

2.7uH, 4.1 mΩ

R12

0 Ohms

VIN

C6

100uF

CSS

47nF

R4

5.11KΩ

CZ3

2200pF

C4

0.1uF

CF1

100pF

ISP

ISN

ISN

LX

LX

ISP

0 Ohms

PGND

1

PGND

2

PGND

3

PGND

4

GND

5

VFB

6

COMP

7

SS

8

GND

9

ISN

10

ISP

11

SWN

12

VINP

13

LX

14

LX

15

LX

16

BST

17

VIN

18

GND

19

GND

20

UVIN

21

VCC

22

LX

23

LX

24

LX

25

LX

26

Evaluation Board Schematic

Parts shown for 5V-22V input, 3.3V Output