EV2355DN-00A

4.75V to 23V In, 3A Out

Step-Down DC/DC Converter

EVALUATION BOARD — INITIAL RELEASE

01/05, Rev. 1.0

MPS Proprietary Information. © 2005 All Rights Reserved.

1

Unauthorized Photocopy and Duplication Prohibited.

Monolithic Power Systems

GENERAL DESCRIPTION

The EV2355DN-00A is the Evaluation Board for

MPS’ MP2355 Step-Down DC/DC Converter. It

features a wide supply range of 4.75V to 23V

and a continuous output current up to 3A. The

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

adjusted to other levels from 1.22V. A 380KHz

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

8-pin SOIC package with exposed pad minimizes

board area and provides excellent thermal

management.

ELECTRICAL SPECIFICATION

Parameter

Symbol

Value

Units

Supply Voltage

4.75 to 23

V

Output Voltage

3.3

V

Output Current

0 to 3

A

FEATURES

• Up to 3A Continuous Output Current

• Wide 4.75V to 23V Operating Input Range

• Monolithic Buck with 100mΩ Internal FET

• Fixed 380KHz Frequency

• All Ceramic Input and Output Capacitors

• Programmable Soft-Start

• Programmable Input Under-Voltage Lockout

APPLICATIONS

• Distributed Power Systems

• Battery Chargers

• Pre-Regulator for Linear Regulators

“MPS” and “Monolithic Power Systems”, are Registered Trademarks of

Monolithic Power Systems, Inc.

EV2355DN-00A EVALUATION BOARD

Dimensions (2.6”X x 1.9”Y x 0.4”Z)

Board Number

MPS IC Number

EV2355DN-00A

MP2355

95

90

85

80

75

70

65

60

LOAD CURRENT (mA)

MP2355_EC01

Efficiency vs

Load Current

0

1500

1000

500

2000

3500

3000

2500