EV1542DK-SEPIC-00A — 700KHz/1.3MHz SEPIC CONVERTER WITH A 2A SWITCH

EVALUATION BOARD

EV1542DK-SEPIC-00A Rev. 1.0

www.MonolithicPower.com

2

6/15/2005

MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.

© 2005 MPS. All Rights Reserved.

TM

EVALUATION BOARD SCHEMATIC

MP1542

IN

FB

SW

COMP

7

3

8

GND

EN

FSEL

SS

5

6

4

2

1

VOUT

3.3V

0.5A

GND

C3

1nF

C6

NS

D1

1N5819HW-7

D2

1N4148

T1

COOPER

DRQ73-3R3

EV1542-SEPIC_S01

C4

22nF

C2B

NS

VIN

3V - 4.2V

GND

EN

U1

JP1

FREQUENCY

SELECTION

EV1542DK-SEPIC-00A BILL OF MATERIALS

Qty

Ref

Value

Description

Package

Manufacturer

Manufacturer P/N

2

C1A, C1B

10µF

Ceramic Cap, 6.3V, X5R

1210

TDK

C3225X5R1A106K

1

C2A

22µF

Ceramic Cap, 6.3V, X5R

1210

TDK

C3225X5R0J226M

1

C3

1nF

Ceramic Cap, 50V, X7R

0805

TDK

C2012X7R1H102K

1

C4

22nF

Ceramic Cap, 100V, X7R

0805

TDK

C2012X7R2A223M

1

C5

4.7µF

Ceramic Cap, 10V, Y5V

0805

TDK

C2012Y5V1A475Z

2

C6, C2B

NS

Not Stuffed

1

C7

1µF

Ceramic Cap, 10V, X5R

0805

TDK

C2012X5R1A105K

1

D1

Schottky Diode, 40V, 1A

SOD-123

Diodes Inc

1N5819HW-7

1

D2

Rectifier Diode, 75V, 200mW

SOD-323

Diodes Inc

1N4148WS-7

1

JP1

3-Pin Connector Header, 0.100

Sullins

PTC03SAAN

1

L1

3.3µH Transformer, 1.66A

Cooper

DRQ73-3R3

1

R1

16.4kΩ Metal Film Resistor, 1%

0805

Panasonic

ERJ-6ENF1642V

1

R2

10kΩ

Metal Film Resistor, 1%

0805

Panasonic

ERJ-6ENF1002V

1

R3

20kΩ

Metal Film Resistor, 5%

0805

Panasonic

ERJ-6GEYJ203V

2

R4, R5

100kΩ Metal Film Resistor, 5%

0805

Panasonic

ERJ-6GEYJ104V

1

U1

DC-DC Converter

MSOP8

MPS

MP1542DK