ADP3208C データシートの表示（PDF） - ON Semiconductor

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ADP3208C

7-Bit, Programmable, Dual-Phase, Mobile, CPU, Synchronous Buck Controller

ON Semiconductor 

ADP3208C

7-Bit, Programmable,

Dual-Phase, Mobile, CPU,

Synchronous Buck

Controller

The ADP3208C is a highly efficient, multiphase, synchronous buck

switching regulator controller. With its integrated drivers, the

ADP3208C is optimized for converting the notebook battery voltage

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into the core supply voltage required by high performance Intel

processors. An internal 7−bit DAC is used to read a VID code directly

from the processor and to set the CPU core voltage to a value within

the range of 0.3 V to 1.5 V. The phase relationship of the output signals

ensures interleaved 2−phase operation.

The ADP3208C uses a multi−mode architecture run at a

LFCSP48

CASE 932AD

MARKING DIAGRAM

programmable switching frequency and optimized for efficiency

depending on the output current requirement. The ADP3208C

switches between single− and dual−phase operation to maximize

efficiency with all load conditions. The chip includes a programmable

load line slope function to adjust the output voltage as a function of the

load current so that the core voltage is always optimally positioned for

ADP3208C

AWLYYWWG

a load transient. The ADP3208C also provides accurate and reliable

short−circuit protection, adjustable current limiting, and a delayed

power−good output. The IC supports On−The−Fly (OTF) output

voltage changes requested by the CPU.

The ADP3208C is specified over the extended commercial

temperature range of −10°C to 100°C and is available in a 48−lead

LFCSP.

Features

A

= Assembly Location

WL = Wafer Lot

YYWW = Date Code

G

= Pb−Free Package

ORDERING INFORMATION

See detailed ordering and shipping information in the package

dimensions section on page 36 of this data sheet.

• Single−Chip Solution

• Fully Compatible with the Intel® IMVP−6+t

• Short−Circuit Protection with Latchoff Delay

• Clock Enable Output Delays the CPU Clock Until the

Specifications

• Integrated MOSFET Drivers

• Input Voltage Range of 3.3 V to 22 V

• Selectable 1− or 2−Phase Operation with Up to 1 MHz

per Phase Switching Frequency

• Guaranteed ±8 mV Worst−Case Differentially Sensed

Core Voltage Error Overtemperature

• Automatic Power−Saving Mode Maximizes Efficiency

Core Voltage is Stable

• Output Load Current Monitor

• This is a Pb−Free Device

Applications

• Notebook Power Supplies for Next Generation

Intel® Processors

with Light Load During Deeper Sleep Operation

• Soft Transient Control Reduces Inrush Current and

Audio Noise

• Active Current Balancing Between Output Phases

• Independent Current Limit and Load Line Setting

Inputs for Additional Design Flexibility

• Built−In Power−Good Blanking Supports Voltage

Identification (VID) OTF Transients

• 7−Bit, Digitally Programmable DAC with 0.3 V to

1.5 V Output

© Semiconductor Components Industries, LLC, 2010

1

February, 2010 − Rev. 0

Publication Order Number:

ADP3208D/D

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