EV2109DQ-00A – DUAL 800mA, 6V, 1.2MHz SYNCHRONOUS STEP-DOWN CONVERTER

EVALUATION BOARD

EV2109DQ-00A Rev. 1.1

www.MonolithicPower.com

2

10/14/2005

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© 2005 MPS. All Rights Reserved.

TM

EVALUATION BOARD SCHEMATIC

MP2109

SW1

EN1

GND

IN1

FB2

SW2

EN2

FB1

10

9

8

7

6

5

4

3

2

1

IN2

GND

VOUT1

1.8V / 800mA

VOUT2

1.2V / 800mA

C6

NS

C5

NS

U1

EN1

VIN

EN2

EV2109_S01

EV2109DQ-00A BILL OF MATERIALS

Qty

Ref

Value

Description

Package

Manufacturer

Manufacturer P/N

2

C1, C2

10µF

Ceramic Capacitor, 6.3V, X5R

1206

Any

2

C3, C4

22µF

Ceramic Capacitor, 6.3V, X5R

1206

Any

2

C5, C6

NS

Do Not Stuff

2

L1, L2

2.2µH Inductor, 1.2A

SMD

Sumida

CDRH3D16-2R2

3

R1, R3,

R4

300kΩ Resistor, 1%

0603

Any

2

R2

150kΩ Resistor, 1%

0603

Any

2

R5, R6

100kΩ Resistor, 5%

0603

Any

1

U1

DC-DC Converter

QFN10

(3mm x 3mm)

MPS

MP2109DQ