MP1482

2A, 18V Synchronous Rectified

Step-Down Converter

MP1482 Rev. 1.31

www.MonolithicPower.com

1

7/9/2012

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

© 2012 MPS. All Rights Reserved.

The Future of Analog IC Technology

DESCRIPTION

The MP1482 is a monolithic synchronous buck

regulator. The device integrates two 130mΩ

MOSFETs, and provides 2A of continuous load

current over a wide input voltage of 4.75V to

18V. Current mode control provides fast

transient response and cycle-by-cycle current

limit.

An adjustable soft-start prevents inrush current

at turn-on, and in shutdown mode the supply

current drops to 1µA.

This device, available in an 8-pin SOIC

package, provides a very compact solution with

minimal external components.

FEATURES

 2A Output Current

 Wide 4.75V to 18V Operating Input Range

 Integrated 130mΩ Power MOSFET Switches

 Output Adjustable from 0.923V to 15V

 Up to 93% Efficiency

 Programmable Soft-Start

 Stable with Low ESR Ceramic Output Capacitors

 Fixed 340kHz Frequency

 Cycle-by-Cycle Over Current Protection

 Input Under Voltage Lockout

 8–Pin SOIC

APPLICATIONS

 Distributed Power Systems

 Networking Systems

 FPGA, DSP, ASIC Power Supplies

 Green Electronics/ Appliances

 Notebook Computers

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

status, please visit MPS website under Products, Quality Assurance page.

“MPS” and “The Future of Analog IC Technology” are registered trademarks of

Monolithic Power Systems, Inc.

TYPICAL APPLICATION

INPUT

MP1482

BS

IN

FB

SW

SS

GND

COMP

EN

1

2

3

5

6

4

8

7

100

95

90

85

80

75

70

65

60

55

50

0

1.0

2.0

2.5

1.5

0.5

LOAD CURRENT (A)

Efficiency vs

Load Current