EV2354DS-00A Ver la hoja de datos (PDF) - Monolithic Power Systems

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EV2354DS-00A

2A, 23V, 380KHz Step-Down Converter

Monolithic Power Systems 

TM

The Future of Analog IC Technology 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

EV2354DS-00A

Dimensions

2.3”X x 1.4”Y x 0.5”Z

MP2354

2A, 23V, 380KHz

Step-Down Converter

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

INPUT

4.75V to 23V

OPEN

AUTOMATIC

STARTUP

OPEN

IF NOT USED

10nF

3

2

VIN

8 RUN

BST

LX 4

MP2354

1 SYNC

FB 6

GND

COMP

5

7

3.3nF

B230A

OUTPUT

3.3V / 2A

MP2354_TAC_S01

Efficiency vs

Output Current

95

90

5.0V

85

3.3V

80

2.5V

75

70

65

60

0

0.5 1.0 1.5 2.0 2.5

OUTPUT CURRENT (A)

MP2354_TAC_EC01

MP2354 Rev. 1.4

www.MonolithicPower.com

1

1/6/2006

MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.

© 2006 MPS. All Rights Reserved.

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