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SK13

更新时间： 2024-11-18 06:11:47

品牌	Logo	应用领域
芯源 - MPS		转换器二极管光电二极管
页数	文件大小	规格书
11页	323K
描述
3A, 23V, 340KHz Synchronous Rectified Step-Down Converter

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SK13 数据手册

MP1570

3A, 23V, 340KHz Synchronous Rectified

Step-Down Converter

The Future of Analog IC Technology

DESCRIPTION

FEATURES

The MP1570 is a monolithic synchronous buck

regulator. The device integrates 100mΩ

MOSFETS that provide 3A continuous load

current over a wide operating input voltage of

4.75V to 23V. Current mode control provides

fast transient response and cycle-by-cycle

current limit.

•

3A Output Current

Wide 4.75V to 23V Operating Input Range

Integrated 100mΩ Power MOSFET Switches

Output Adjustable from 1.23V to 20V

Up to 95% Efficiency

Programmable Soft-Start

Stable with Low ESR Ceramic Output Capacitors

Fixed 340KHz Frequency

Cycle-by-Cycle Over Current Protection

Input Under Voltage Lockout

Thermally Enhanced 8-Pin SOIC Package

An adjustable soft-start prevents inrush current

at turn-on. In shutdown mode, the output is

actively discharged by transferring energy in the

output capacitor to the input capacitor, dropping

the supply current to 1µA.

APPLICATIONS

This device, available in an 8-pin SOIC

package, provides a very compact system

solution with minimal reliance on external

components.

•

Distributed Power Systems

Pre-Regulator for Linear Regulators

Notebook Computers

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

Power Systems, Inc.

EVALUATION BOARD REFERENCE

Board Number

Dimensions

EV1570DN-00A

2.0”X x 1.5”Y x 0.5”Z

TYPICAL APPLICATION

10nF

Efficiency vs.

INPUT

4.75V to 23V

Load Current

100

=9V

OUTPUT

3.3V

=12V

MP1570

=23V

COMP

GND

B130

3.3nF

(optional)

=5V

OUT

0.5 1.0 1.5 2.0 2.5 3.0 3.5

LOAD CURRENT (A)

MP1570-EC02

MP1570_TAC01

MP1570 Rev. 1.5

1/31/2006

www.MonolithicPower.com

MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.

12 3 4 5 6 7...11

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