EV2351DQ-00A

4.75V to 23V Input, 1.5A Output

Step-Down DC/DC Converter

EVALUATION BOARD - INITIAL RELEASE

EV2351DQ-00A Rev. 1.1

www.MonolithicPower.com

1

3/29/2005

MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.

© 2005 MPS. All Rights Reserved.

The Future of Analog IC Technology

GENERAL DESCRIPTION

The EV2351DQ-00A is the Evaluation Board for

MPS’ MP2351 Step-Down DC/DC Converter. It

features a wide supply range of 4.75V to 23V

and a continuous output current up to 1.5A. The

output voltage is set to 3.3V, but can be easily

adjusted to other levels from 1.22V. A 1.4MHz

high switching frequency allows the use of

small, low cost capacitors and inductors.

Current mode control and an integrated power

MOSFET minimize component count, board area,

and solution cost. Fault condition protection

includes cycle-by-cycle current limiting, thermal

shutdown, and under-voltage lockout. Internal

soft-start reduces the turn-on stress. The small

10-pin QFN package minimizes board area.

ELECTRICAL SPECIFICATIONS

Parameter

Symbol

Value

Units

Supply Voltage

4.75 – 23

V

Output Voltage

5

V

Output Current

0 – 1.5

A

FEATURES

• Up to 1.5A Output Current

• Wide 4.75 to 23V Operating Input Range

• Monolithic Buck with 180mΩ Internal FET

• Fixed 1.4MHz Frequency

• All Ceramic Input and Output Capacitors

• Programmable Input Under-Voltage Lockout

APPLICATIONS

• Distributed Power Systems

• Battery Chargers

• DSL Modems

• Pre-Regulators for Linear Regulators

“MPS” and “The Future of Analog IC Technology”, are Registered Trademarks

of Monolithic Power Systems, Inc.

EV2351DQ-00A EVALUATION BOARD

Dimensions (2.1”X x 1.3”Y x 0.4”Z)

Board Number

MPS IC Number

EV2351DQ-00A

MP2351

100

90

80

70

60

50

40

0

1500

300

600

900

1200

LOAD CURRENT (mA)

MP2351-EC01

Efficiency vs

Load Current