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SK13

更新时间： 2024-11-21 12:14:55

品牌	Logo	应用领域
艾科嘉 - EXAR		转换器二极管光电二极管
页数	文件大小	规格书
12页	759K
描述
3A 18V Synchronous Step-Down Converter

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SK13 数据手册

XRP7665

3A 18V Synchronous Step-Down Converter

March 2013

Rev. 2.0.1

GENERAL DESCRIPTION

APPLICATIONS

The XRP7665 is a synchronous current-mode

PWM step down (buck) regulator capable of a

constant output current up to 3 Amps. A wide

4.50V to 18V input voltage range allows for

single supply operations from industry

standard 5V and 12V power rails.

ñ Distributed Power Architectures

ñ Point of Load Converters

ñ Audio-Video Equipments

ñ Medical & Industrial Equipments

With a 340kHz constant operating frequency

FEATURES

and

integrated

high

and

low

side

100 mΩ9/0 mΩ MOS F,EthTesXRP7665 reduces

the overall component count and solution

footprint. Current-mode control provides fast

transient response and cycle-by-cycle current

limit. An adjustable soft-start prevents inrush

current at turn-on, and in shutdown mode the

supply current drops to 0.1µA.

ñ Pin/Function Compatible to MP1484

ñ 3A Continuous Output Current

ñ 4.50V to 18V Wide Input Voltage

ñ PWM Current Mode Control

- 340kHz Constant Operations

- Up to 93% Efficiency

Built-in output over voltage (open load), over

temperature, cycle-by-cycle over current and

under voltage lockout (UVLO) protections

insure safe operations under abnormal

operating conditions.

ñ Adjustable Output Voltage

- 0.925V to 16V Range

- 2.0% Accuracy

ñ Programmable Soft-Start and Enable

The XRP7665 is a pin and function compatible

device to MP1484 and a 3A pin to pin upgrade

to XRP7664.

Function

ñ Built-in Thermal, Over Current, UVLO

and Output Over Voltage Protections

The XRP7665 is offered in a RoHS compliant,

“ g r e e n ” / h a l o-gpiennexpofsredepead S8OIC

package.

ñ R o HS C o mp l i a n t

“ Gr e e n ” / Ha l o g

8-Pin Exposed Pad SOIC Package

TYPICAL APPLICATION DIAGRAM

Fig. 1: XRP7665 Application Diagram

Exar Corporation

48720 Kato Road, Fremont CA 94538, USA

www.exar.com

Tel. +1 510 668-7000 – Fax. +1 510 668-7001

12 3 4 5 6 7...12

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