MP2225

High-Efficiency, 5A, 18V, 500kHz

Synchronous, Step-Down Converter

MP2225 Rev. 1.01

www.MonolithicPower.com

1

4/13/2016

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

© 2016 MPS. All Rights Reserved.

The Future of Analog IC Technology

DESCRIPTION

The MP2225 is a high-frequency, synchronous,

rectified, step-down, switch-mode converter

with built-in power MOSFETs. It offers a very

compact solution to achieve a 5A output current

with excellent load and line regulation over a

wide input supply range. The MP2225 has

synchronous

mode

operation

for

higher

efficiency over the output current load range.

Current-mode operation provides fast transient

response and eases loop stabilization.

Full protection features include over-current

protection and thermal shut down.

The MP2225 requires a minimal number of

readily-available standard external components,

and is available in a space-saving 8-pin

TSOT23 package.

FEATURES

• Wide 4.5V-to-18V Operating Input Range

• Adjustable Output Voltage as low as 0.6V

MOSFETs

• High Efficiency up to 97%

• Fixed 500kHz Switching Frequency

• Synchronizes from a 200kHz-to-2MHz

External Clock

• 2.4ms Internal Soft-Start Time

• 1% Reference Accuracy at Room

Temperature

• Internal Power-save Mode

• OCP with hiccup mode

• Available in 8-pin TSOT23

APPLICATIONS

• Flat-Panel Television and Monitors

• Notebook Systems and I/O Power

• Digital Set-Top Boxes

• Distributed Power Systems

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

MP2225

3.3V/5A

EN/SYNC

AGND

VCC

IN

FB

SW

BST

C1

22 F

L1

3.3 H

R1

40.2K

R2

8.87K

C5

0.1 F

C4

0.1 F

EN/SYNC

GND

VOUT

VIN

C2

22 F×2

40

45

50

55

60

65

70

75

80

85

90

95

100

0.01

0.1

1

10