MP2494

2A, 55V, 100kHz Step-Down Converter

MP2494 Rev. 1.0

www.MonolithicPower.com

1

4/25/2012

MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.

© 2012 MPS. All Rights Reserved.

The Future of Analog IC Technology

DESCRIPTION

The MP2494 is a monolithic step-down switch

mode converter. It achieves 2A continuous

output current over a wide input supply range

with excellent load and line regulation.

MP2494 achieves low EMI signature with well

controlled switching edges.

Fault condition protection includes cycle-by-cycle

current limiting and thermal shutdown.

The MP2494 requires a minimum number of

readily available standard external components.

The MP2494 is available in SOIC8 and SOIC8E

package.

FEATURES

• Wide 4.5V to 55V Operating Input Range

• Output Adjustable from 0.8V to 15V

• 0.25Ω Internal Power MOSFET Switch

• Stable with Low ESR Output Ceramic

Capacitors

• Fixed 100kHz Frequency

• Low EMI signature

• Thermal Shutdown

• Cycle-by-Cycle Over Current Protection

• Available in SOIC8 and SOIC8E packages

APPLICATIONS

• USB Power Supplies

• Automotive Cigarette Lighter Adapters

All MPS parts are lead-free and adhere to the RoHS directive. For MPS green

status, please visit MPS website under Quality Assurance. “MPS” and “The

Future of Analog IC Technology” are Registered Trademarks of Monolithic

Power Systems, Inc.

TYPICAL APPLICATION

1

3

5

2

4

6

8

7

U1

DR1050-390-R

8V-55V

5V@2A

MP2494

0.1μF

0.1μF

L1

39μH

R1

301k

1%

R2

57.6k

1%

D1

2A/80V

2.2μF

100V

220μF

63V

150pF

39μF

16V

22μF

16V

VIN

VIN

EN

EN

SS

GND

FB

GS

SW

BST

VOUT