Datasheet > MP28128

MP28128

更新时间： 2024-09-22 01:20:35

品牌	Logo	应用领域
芯源 - MPS		/
页数	文件大小	规格书
11页	444K
描述
2.5A, 1.5MHz Synchronous Step-Down Converter

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MP28128 数据手册

MP28128

2.5A, 1.5MHz Synchronous

Step-Down Converter

The Future of Analog IC Technology

DESCRIPTION

FEATURES

The MP28128 is a 1.5MHz fixed frequency

PWM synchronous step-down regulator with

internal compensation. MP28128 operates from

a 2.7V to 6V input and generates an adjustable

output voltage from 0.8V to 0.9xV_INat up to

2.5A load current.

•

2.5A Output Current

Input Operation Range: 2.7V to 6V

1.5% Output Accuracy

Internal Power MOSFET Switches

All Ceramic Capacitor Design

1.5MHz Fixed Switching Frequency

Internal Soft-Start

Frequency Synchronization Input

Power Good Output

The MP28128 integrates an 80mΩ high-side

switch and a 60mΩ synchronous rectifier for

high efficiency without an external Schottky

diode. With peak current mode control and

internal compensation, the MP28128 based

solution delivers a very compact footprint with a

minimum component count. Fault condition

Cycle-by-Cycle Current Limiting

Thermal Shutdown

3mm x 3mm 10-lead QFN Package

protection

includes

hiccup

short-circuit

APPLICATIONS

protection, cycle-by-cycle current limiting and

thermal shutdown. Other features include

frequency synchronization input, internal soft-

start and power good output.

•

µP/ASIC/DSP/FPGA Core and I/O Supplies

Printers and LCD TVs

Network and Telecom Equipment

Point of Load Regulators

The MP28128 is available in a small 3mm x

3mm 10-lead QFN package.

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

Power Systems, Inc.

TYPICAL APPLICATION

Efficiency vs.

Output Current

POK

5V to 1.8V

5V to 3.3V

5V to 2.5V

EN/SYNC

GND

OFF ON

0.5

1.5

2.5

OUTPUT CURRENT (A)

MP28128 Rev. 0.92

2/13/2009

www.MonolithicPower.com

MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.

12 3 4 5 6 7...11

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