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ADP3167, ADP3167JR-REEL7, ADP3168-J

Table of contents:
Info of ADP3167
Info of ADP3167JR-REEL7
Info of ADP3168-J

ADP3167, ADP3167JR-REEL7, ADP3168-J Selling Leads, Datasheet

MFG:AD Package Cooled:N/A D/C:01+

ADP3167, ADP3167JR-REEL7, ADP3168-J Picture

ADP3167, ADP3167JR-REEL7, ADP3168-J Datasheet download

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Part Number: ADP3167

MFG: AD

Package Cooled: N/A

D/C: 01+

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ADP3167 General Description

The ADP3160 and ADP3167 are highly efﬁcient, dual output, synchronous buck switching regulator controllers optimized for converting a 5 V or 12 V main supply into the core supply voltage required by high-performance processors, such as Pentium 4 and Athlon. The ADP3160 uses an internal 5-bit DAC to read a voltage identiﬁcation (VID) code directly from the processor that is used to set the output voltage between 1.1 V and 1.85 V. The devices use a current-mode PWM architecture to drive two logiclevel outputs at a programmable switching frequency that can be optimized for VRM size and efﬁciency. The output signals are 180 degrees out of phase, allowing for the construction of two complementary buck switching stages. These two stages share the dc output current to reduce overall output voltage ripple. An active current balancing function ensures that both phases carry equal portions of the total load current, even under large transient loads, to minimize the size of the inductors. The ADP3160 control loop has been optimized for conversion from 12 V, while the ADP3167 is designed for conversion from a 5 V supply.

The ADP3160 and ADP3167 also use a unique supplemental regulation technique called active voltage positioning 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-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. They also provide accurate and reliable short circuit protection and adjustable current limiting. The ADP3160 is speciﬁed over the commercial temperature range of 0 to 70 and is available in a 16-lead narrow body SOIC package.

ADP3167 Maximum Ratings

VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 V to +15 V
CS+, CS . . . . . . . . . . . . . . . . . . . . . . 0.3 V to VCC + 0.3 V
All Other Inputs and Outputs . . . . . . . . . . . 0.3 V to +10 V
Operating Ambient Temperature Range . . . . . . . 0 to 70
Operating Junction Temperature . . . . . . . . . . . . . . . . 125
Storage Temperature Range . . . . . . . . . . . 65 to +150
Two-Layer Board . . . . . . . . . . . . . . . . . . . . . . . . . . 125/W
Four-Layer Board . . . . . . . . . . . . . . . . . . . . . . . . . . 81/W
Lead Temperature (Soldering, 10 sec) . . . . . . . . . . . 300
Vapor Phase (60 sec) . . . . . . . . . . . . . . . . . . . . . . . . . 215
Infrared (15 sec) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220

ADP3167 Features

ADOPT™ Optimal Positioning Technology for Superior Load Transient Response and Fewest Output Capacitors
Complies with VRM 9.0 with Lowest System Cost
Active Current Balancing between Both Output Phases
5-Bit Digitally Programmable 1.1 V to 1.85 V Output
Dual Logic-Level PWM Outputs for Interface to External High Power Drivers
Total Output Accuracy 0.8% over Temperature
Current-Mode Operation
Short Circuit Protection
Power Good Output
Overvoltage Protection Crowbar Protects
Microprocessors with No Additional
External Components

ADP3167 Typical Application

Desktop PC Power Supplies for:
Intel Pentium® 4 Processors
AMD Athlon™ Processors
VRM Modules

ADP3167 Connection Diagram

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