Datasheet > ADP3422JRUZ-REEL

ADP3422JRUZ-REEL

更新时间： 2024-01-20 10:51:13

品牌	Logo	应用领域
安森美 - ONSEMI		光电二极管
页数	文件大小	规格书
16页	166K
描述
IC 5-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO28, TSSOP-28, Power Management Circuit

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ADP3422JRUZ-REEL 数据手册

IMVP-II-Compliant

Core Power Controller for Mobile CPUs

ADP3422

FEATURES

FUNCTIONAL BLOCK DIAGRAM

Certified IMVP-II Controller

Excellent Transient Containment

Minimum Number of Output Capacitors

Fast, Smooth, Output Transition During VID Code Change

Current Limit with Hiccup Protection

Transient-Glitch-Free Power Good

Low Shutdown Current

Soft Start Eliminates In-Rush Current Surge

Adaptive Noise-Blanking Enhancement for Speed and

Stability

Highly Redundant Over-Voltage and Reverse-Voltage

Protection

VCC

ADP3422

HYSSET

CPUSET

FSHIFT

DSHIFT

BSHIFT

HYSTERESIS

AND

SHIFT-SETTING

CS+

CS–

CLIM

VID4

VID3

VID2

VID1

VID0

CORE

RAMP

REG

Controls Synchronous Rectifier for Improved Battery Life

PROGRAMMED

DAC

AND

APPLICATIONS

FIXED

REFERENCE

IMVP-II Enabled Core DC/DC Converters

Fixed-Voltage Mobile CPU Core DC/DC Converters

Notebook/Laptop Power Supplies

Programmable Output Power Supplies

OUT

DACOUT

SWFB

VCC

GENERAL DESCRIPTION

The ADP3422 is a hysteretic dc-dc buck converter controller to

power a mobile processor’s core. The optimized low voltage

design is powered from the 3.3 V system supply. The output

voltage is set by a 5-bit VID code. To accommodate the transition

time required by the newest processors for on-the-fly VID

changes, the ADP3422 features high-speed operation to allow a

minimized inductor size that results in the fastest change of

current to the output. To further allow for the minimum number

of output capacitors to be used, the ADP3422 features active

voltage positioning that can be optimally compensated to ensure a

superior load transient response. The output signal interfaces

with the ADP3415 MOSFET driver that is optimized for high

speed and high efficiency for driving both the upper and lower

(synchronous) MOSFETs of the buck converter.

UVLO AND MAIN BIAS

PWRGD BLANKER

SR CONTROL

BOM

DSLP

COREFB

PWRGD MONITOR

DPRSLP

PWRGD

SS-HICCUPTIMER AND OCP

DRVLSD

CLAMP

OP MODE

SELECTOR

OVP AND RVP

POWER MANAGEMENT

GND

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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