Datasheet > 电源电路 > 开关式稳压器或控制器> ADP3171JR

ADP3171JR

更新时间： 2024-09-22 22:53:35

品牌	Logo	应用领域
亚德诺 - ADI		稳压器开关式稳压器或控制器电源电路开关式控制器光电二极管
页数	文件大小	规格书
12页	305K
描述
Synchronous Buck Controller with Dual Linear Regulator Controllers

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中文翻译

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数据手册

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ADP3171JR 数据手册

Synchronous Buck Controller

with Dual Linear Regulator Controllers

ADP3171

FEATURES

FUNCTIONAL BLOCK DIAGRAM

Fixed 1.2 V N-Channel Synchronous Buck Driver

Two On-Board Linear Regulator Controllers

Total Accuracy 1% over Temperature

High Efficiency Current-Mode Operation

Short Circuit Protection

Power Good Output

Overvoltage Protection Crowbar Protects Switching

Output with No Additional External Components

VCC

SET

UVLO

AND BIAS

OSCILLATOR

DRVH

DRVL

PWM

RESET

LOGIC

CROWBAR

REF

REFERENCE

GND

DAC +20%

DAC –20%

APPLICATIONS

Auxiliary System Supplies for Desktop

Computer Systems

1.5V

PWRGD

LRFB1

General-Purpose Low Voltage Supplies

LRDRV1

1.8V

CS–

LRFB2

CMP

CS+

LRDRV2

COMP

1.2V

ADP3171

GENERAL DESCRIPTION

The ADP3171 contains two fixed output voltage linear regulator

controllers that are designed to drive external N-channel

MOSFETs. These linear regulators are used to generate the

auxiliary voltages required in most motherboard designs and have

been designed to provide a high bandwidth load-transient response.

The ADP3171 is a highly efficient output synchronous buck

switching regulator controller optimized for converting a 5 V

main supply into the auxiliary supply voltages required by

processors and chipsets. The ADP3171 provides a fixed

output voltage of 1.2 V at up to 15 A, depending on the

power ratings of the external MOSFETs and inductor. The

ADP3171 uses a current-mode, constant off time architecture to

drive two N-channel MOSFETs at a programmable switching

frequency that can be optimized for regulator size and efficiency.

The ADP3171 is specified over the commercial temperature

range of 0°C to 70°C and is available in a 14-lead SOIC package.

The ADP3171 provides accurate and reliable short circuit

protection and adjustable current limiting. It also includes an

integrated overvoltage crowbar function to protect the load in

case the output voltage exceeds the nominal programmed

voltage by more than 20%.

REV. 0

Information furnished by Analog Devices is believed to be accurate and

reliable. However, no responsibility is assumed by Analog Devices for its

use, norforanyinfringementsofpatentsorotherrightsofthirdpartiesthat

may result from its use. No license is granted by implication or otherwise

under any patent or patent rights of Analog Devices.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781/329-4700

Fax: 781/326-8703

www.analog.com

12 3 4 5 6 7...12

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与ADP3171JR相关器件

型号	品牌	获取价格	描述	数据表
ADP3171JR-REEL7	ADI	获取价格	IC SWITCHING CONTROLLER, PDSO14, SOIC-14, Switching Regulator or Controller
ADP3171JR-REEL7	ROCHESTER	获取价格	SWITCHING CONTROLLER, PDSO14, SOIC-14
ADP3178	ADI	获取价格	4-Bit Programmable Synchronous Buck Controllers
ADP3178JR	ADI	获取价格	4-Bit Programmable Synchronous Buck Controllers
ADP3178JR	ROCHESTER	获取价格	SWITCHING CONTROLLER, PDSO16, SOIC-16
ADP3178JR-REEL	ADI	获取价格	IC SWITCHING CONTROLLER, PDSO16, SO-16, Switching Regulator or Controller
ADP3178JR-REEL7	ADI	获取价格	IC SWITCHING CONTROLLER, PDSO16, SO-16, Switching Regulator or Controller
ADP3178JRZ	ONSEMI	获取价格	IC SWITCHING CONTROLLER, PDSO16, SOIC-16, Switching Regulator or Controller
ADP3178JRZ-REEL	ADI	获取价格	IC SWITCHING CONTROLLER, PDSO16, SO-16, Switching Regulator or Controller
ADP3178JRZ-REEL7	ROCHESTER	获取价格	SWITCHING CONTROLLER, PDSO16, SO-16

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