MP2354

2A, 23V, 380KHz

Step-Down Converter

MP2354 Rev. 1.4

www.MonolithicPower.com

1

1/6/2006

MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.

© 2006 MPS. All Rights Reserved.

The Future of Analog IC Technology

TM

TM

DESCRIPTION

The MP2354 is a monolithic step down switch

mode converter with a built in internal power

MOSFET. It achieves 2A continuous output

current over a wide input supply range with

excellent load and line regulation.

Current mode operation provides fast transient

response and eases loop stabilization.

Fault condition protection includes cycle-by-cycle

current limiting and thermal shutdown. In

shutdown mode the regulator draws 20µA of

supply current.

EVALUATION BOARD REFERENCE

Board Number

Dimensions

EV2354DS-00A

2.3”X x 1.4”Y x 0.5”Z

FEATURES

• 0.18Ω Internal Power MOSFET Switch

• Stable with Low ESR Output Ceramic

Capacitors

• Up to 95% Efficiency

• 2A Output Current

• Wide 4.75V to 23V Operating Input Range

• Fixed 380KHz Frequency

• Thermal Shutdown

• Cycle-by-Cycle Over Current Protection

• Programmable Under Voltage Lockout

• Frequency Synchronization Input

• Operating Temperature: –40°C to +85°C

• Available in an 8-Pin SO Package

APPLICATIONS

• Distributed Power Systems

• Battery Chargers

• Pre-Regulator for Linear Regulators

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

Power Systems, Inc.

TYPICAL APPLICATION

MP2354

LX

VIN

BST

32

FB

4

6

SYNC

COMP

GND

7

5

RUN

1

8

OUTPUT

3.3V / 2A

INPUT

4.75V to 23V

OPEN

IF NOT USED

OPEN

AUTOMATIC

STARTUP

MP2354_TAC_S01

3.3nF

B230A

10nF

95

90

85

80

75

70

65

60

OUTPUT CURRENT (A)

MP2354_TAC_EC01

Efficiency vs

Output Current

0

1.0

0.5

1.5

2.0

2.5

5.0V

3.3V

2.5V