MP2380

5A, 21V, 600KHz

Step-Down Converter

MP2380 Rev.1.2

www.MonolithicPower.com

1

5/26/2008

MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.

© 2008 MPS. All Rights Reserved.

The Future of Analog IC Technology

DESCRIPTION

The MP2380 is a monolithic step-down switch

mode converter with a built in high-side power

MOSFET. It achieves 5A 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.

The MP2380 requires a minimum number of

readily available standard external components

and is available in an 8-pin SOIC package with

exposed pad.

FEATURES

• Wide 4.5V to 21V Operating Input Range

• 5A Continuous Output Current

• 45mΩ Internal Power MOSFET Switch

• Power Good Indicator

• Fixed 600KHz Frequency

• Synchronizable Up to 1.5 MHz

• Cycle-by-Cycle Over Current Protection

• Thermal Shutdown

• Output Adjustable from 0.8V

• Stable with Low ESR Output Ceramic

Capacitors

• Available in a Thermally Enhanced 8-Pin

SOIC Package

APPLICATIONS

•

Distributed Power Systems

•

Battery Charger

•

Pre-Regulator for Linear Regulators

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

Monolithic Power Systems, Inc.

TYPICAL APPLICATION

FB

BST

1

5

4

2

GND

IN

EN/SYNC

3.3V @ 5A

D1

B530C

OFF ON

PG

POWER

GOOD

VCC

8

7

6

3

100

95

90

85

80

75

70

65

60

55

50

12

45

3

OUTPUT CURRENT (A)

Efficiency vs

Output Current