ADP3170JRU-REEL

更新时间： 2024-01-10 18:06:53

品牌	Logo	应用领域
亚德诺 - ADI		控制器
页数	文件大小	规格书
16页	182K
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中文翻译

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数据手册

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ADP3170JRU-REEL 数据手册

VRM 8.5 Compatible

Single Phase Core Controller

ADP3170

FEATURES

FUNCTIO NAL BLO CK D IAGRAM

Optimally Compensated Active Voltage Positioning

with Gain and Offset Adjustment (ADOPT™) for

Superior Load Transient Response

Complies with VRM 8.5 Specifications with Lowest

System Cost

5-Bit Digitally Programmable 1.05 V to 1.825 V Output

N-Channel Synchronous Buck Controller

Onboard 1.8 V Linear Regulator Controller

Total Accuracy ꢀ1% Over Temperature

High Efficiency Current-Mode Operation

Short Circuit Protection

VCC

SET

UVLO

AND BIAS

OSCILLATOR

DRVH

PWM

LOGIC

RESET

CROWBAR

DRVL

PGND

3.0V

REFERENCE

REF

DAC +20%

DAC –20%

GND

REF

PWRGD

1.8V

Power Good Output

Overvoltage Protection Crowbar Protects

Microprocessors with No Additional External

Components

LRFB

LRDRV

CS–

CMP

CS+

APPLICATIONS

ADP3170

Core and 1.8 V Standby Supplies for Next Generation

Intel Pentium^®III Processors

COMP

VID

DAC

REF

VID3 VID2 VID1 VID0 VID25

mode architectures, active voltage positioning adjusts the output

voltage as a function of the load current so that it is always

optimally positioned for a system transient. The ADP3170 also

provides accurate and reliable short circuit protection and

adjustable current limiting. It also includes an integrated

overvoltage crowbar function to protect the microprocessor

from destruction in case the core supply exceeds the nominal

programmed voltage by more than 20%.

GENERAL D ESCRIP TIO N

The ADP3170 is a highly efficient output synchronous buck

switching regulator controller optimized for converting a 5 V

main supply into the core supply voltage required by next

generation Intel Celeron processors. The ADP3170 uses an

internal 5-bit DAC to read a voltage identification (VID)

code directly from the processor, which is used to set the

output voltage between 1.05 V and 1.825 V. The ADP3170

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 ADP3170 contains a 1.8 V linear regulator controller that

is designed to drive an external N-channel MOSFET. This linear

regulator can be used to generate auxiliary voltages (such as 1.8 V

standby power) required in most motherboard designs, and has

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

The ADP3170 also uses a unique supplemental regulation tech-

nique called Analog Devices Optimal Positioning Technology

(ADOPT) to enhance load transient performance. Active

voltage positioning results in a dc/dc converter that meets the

stringent output voltage specifications for high performance

processors, with the minimum number of output capacitors and

smallest footprint. Unlike voltage-mode and standard current-

The ADP3170 is specified over the commercial temperature range

of 0°C to 70°C and is available in a 20-lead TSSOP package.

ADOPT is a trademark of Analog Devices, Inc.

Pentium is a registered trademark of Intel Corporation

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

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与ADP3170JRU-REEL相关器件

型号	品牌	获取价格	描述	数据表
ADP3170JRU-REEL7	ADI	获取价格	IC SWITCHING CONTROLLER, PDSO20, TSSOP-20, Switching Regulator or Controller
ADP3170JRUZ-REEL	ADI	获取价格	IC SWITCHING CONTROLLER, PDSO20, TSSOP-20, Switching Regulator or Controller
ADP3170JRUZ-REEL	ONSEMI	获取价格	IC SWITCHING CONTROLLER, PDSO20, TSSOP-20, Switching Regulator or Controller
ADP3170JRUZ-REEL7	ONSEMI	获取价格	SWITCHING CONTROLLER, PDSO20, TSSOP-20
ADP3170JRUZ-REEL7	ADI	获取价格	IC SWITCHING CONTROLLER, PDSO20, TSSOP-20, Switching Regulator or Controller
ADP3171	ADI	获取价格	Synchronous Buck Controller with Dual Linear Regulator Controllers
ADP3171JR	ADI	获取价格	Synchronous Buck Controller with Dual Linear Regulator Controllers
ADP3171JR	ROCHESTER	获取价格	SWITCHING CONTROLLER, PDSO14, SOIC-14
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

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