Datasheet > ADP3158JR-REEL7

ADP3158JR-REEL7

更新时间： 2024-11-29 21:16:47

品牌	Logo	应用领域
亚德诺 - ADI		开关光电二极管
页数	文件大小	规格书
16页	187K
描述
IC SWITCHING CONTROLLER, PDSO16, SOIC-16, Switching Regulator or Controller

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ADP3158JR-REEL7 数据手册

4-Bit Programmable

Synchronous Buck Controllers

ADP3158/ADP3178

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 Specifications with Lowest

System Cost

VCC

ADP3158/ADP3178

UVLO

& BIAS

DRVH

OSCILLATOR

PWM

DRIVE

4-Bit Digitally Programmable 1.3 V to 2.05 V Output

N-Channel Synchronous Buck Driver

DRVL

GND

Total Accuracy ꢀ0.8% Over Temperature

Two On-Board Linear Regulator Controllers Designed

to Meet System Power Sequencing Requirements

High Efficiency Current-Mode Operation

Short Circuit Protection for Switching Regulator

Overvoltage Protection Crowbar Protects Micro-

processors with No Additional External Components

REF

REFERENCE

DAC+20%

LR1

CS–

CS+

LRFB1

CMP

– +

LRDRV1

LR2

APPLICATIONS

LRFB2

Core Supply Voltage Generation for:

Intel Pentium^®III

LRDRV2

COMP

Intel Celeron™

REF

VID DAC

VID3

VID2

VID1

VID0

GENERAL D ESCRIP TIO N

standard current-mode architectures, active voltage positioning

adjusts the output voltage as a function of the load current so it

is always optimally positioned for a system transient. T hey also

provide accurate and reliable short circuit protection and

adjustable current limiting. T he devices include 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%.

T he ADP3158 and ADP3178 are highly efficient synchronous

buck switching regulator controllers optimized for converting a

5 V main supply into the core supply voltage required by high-

performance processors. These devices use an internal 4-bit DAC

to read a voltage identification (VID) code directly from the

processor, which is used to set the output voltage between 1.3 V

and 2.05 V. T hey use a current mode, constant off-time archi-

tecture to drive two N-channel MOSFETs at a programmable

switching frequency that can be optimized for regulator size and

efficiency.

T he AD P3158 and AD P3178 contain two linear regulator

controllers that are designed to drive external N -channel

M OSFET s. T he outputs are internally fixed at 2.5 V and 1.8 V

in the ADP3158, while the ADP3178 provides adjustable out-

puts that are set using an external resistor divider. T hese

linear regulators are used to generate the auxiliary voltages

(AGP, GT L, etc.) required in most motherboard designs,

and have been designed to provide a high bandwidth load-

transient response.

T he ADP3158 and ADP3178 also use a unique supplemental

regulation technique called Analog Devices Optimal Positioning

T echnology (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

T he ADP3158 and ADP3178 are specified over the commercial

temperature range of 0°C to 70°C and are available in a 16-lead

SOIC package.

ADOPT is a trademark of Analog Devices, Inc.

Pentium is a registered trademark of Intel Corporation.

Celeron is a trademark of Intel Corporation.

REV. A

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...16

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与ADP3158JR-REEL7相关器件

型号	品牌	获取价格	描述	数据表
ADP3159	ADI	获取价格	4-Bit Programmable Synchronous Buck Controllers
ADP3159JRU	ADI	获取价格	4-Bit Programmable Synchronous Buck Controllers
ADP3159JRU-REEL	ADI	获取价格	IC SWITCHING CONTROLLER, PDSO20, TSSOP-20, Switching Regulator or Controller
ADP3159JRU-REEL7	ONSEMI	获取价格	IC SWITCHING CONTROLLER, PDSO20, TSSOP-20, Switching Regulator or Controller
ADP3159JRU-REEL7	ADI	获取价格	IC SWITCHING CONTROLLER, PDSO20, TSSOP-20, Switching Regulator or Controller
ADP3159JRU-REEL7	ROCHESTER	获取价格	SWITCHING CONTROLLER, PDSO20, TSSOP-20
ADP315PC87570	ETC	获取价格	Keyboard and Power Management Controller
ADP3160	ADI	获取价格	5-Bit Programmable 2-Phase Synchronous Buck Controller
ADP3160JR	ADI	获取价格	5-Bit Programmable 2-Phase Synchronous Buck Controller
ADP3160JR	ROCHESTER	获取价格	DUAL SWITCHING CONTROLLER, 2000 kHz SWITCHING FREQ-MAX, PDSO16, SOIC-16

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