SC401B

7

RTON

130KΩ

SC401B

FB

1

VOUT

2

VDD

3

AGND

4

FBL

5

VIN

6

SS

7

BST

8

17

18

19

20

21

PGND 22

LX 23

LX 24

AGND

PAD 1

LX PAD 3

RILIM

7.68KΩ

RLDO2

75KΩ

RLDO1

422KΩ

CIN

2 x 10µF

(see note)

RGND

0

CBST

1µF

VIN

+12V

PGND

PGND

PGND

PGND

PGND

CFF

100pF

RFB1

10KΩ

L1

1µH

RFB2

6.65KΩ

VOUT

1.5V @ 15A, 300kHz

ENABLE/PSAVE

ENABLE LDO

+

COUT

7.5mΩ

2 x 220µF

PGOOD

1µF

Component

Value

Manufacturer

Part Number

Web

CIN (see note)

2 x 10µF/25V

Murata

GRM32DR71E106KA12L

www.murata.com

www.edc.sanyo.com

Key Components

NOTE: The quantity of 10µF input capacitors required varies with the application requirements.

www.cyntec.com

Internal LDO Used as Bias

3.3nF

2.2µF

1µF

COUT

2 x 220µF/15mΩ

Sanyo

4TPE220MF

PIMB104T-1R0MS

1.0µH/3mΩ

Cyntec

L1

RBST

3.3 Ω

Detailed Application Circuit-1