MP2228

High-Efficiency, 2A, 16V, 800kHz

Synchronous, Step-Down Converter

MP2228 Rev. 1.1

www.MonolithicPower.com

1

8/20/2013

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

© 2013 MPS. All Rights Reserved.

The Future of Analog IC Technology

DESCRIPTION

The MP2228 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 2A continuous

output current with excellent load and line

regulation over a wide input supply range. The

MP2228 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 MP2228 requires a minimal number of

readily-available standard external components,

and is available in a space-saving 8-pin

TSOT23 package.

FEATURES

• 6V-to-16V Operating Input Range

MOSFETs

• High-Efficiency Synchronous Mode

Operation

• Fixed 800kHz Switching Frequency

• External AAM pin for Power-Save Mode

Programming

• External Soft-Start

• OCP Protection and Hiccup

• Thermal Shutdown

• Output Adjustable from 0.8V

• Available in an 8-pin TSOT-23 Package

APPLICATIONS

• Notebook Systems and I/O Power

• Digital Set-Top Boxes

• Flat-Panel Television and Monitors

• Distributed Power Systems

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

MP

IN

VCC

AAM

SS

GND

FB

SW

BST

5

3

8

4

6

1

7

2

2228

6V - 16V

VIN

C3

22nF

R4

113k

R3

20

R6

8.2k

R5

10k

R1

40.2k

R2

13k

3.3V/2A

OUTPUT CURRENT (A)

50

55

60

65

70

75

80

85

90

95

100

0.01

0.10

1.00

10.00