ADP3209D ON Semiconductor, ADP3209D Datasheet

ADP3209D

Manufacturer Part Number

ADP3209D

Description

Adp3209d 5-bit, Programmable, Single-phase, Synchronous Buck Controller

Manufacturer

ON Semiconductor

Datasheet

1.ADP3209D.pdf (27 pages)

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ADP3209D

5-Bit, Programmable,

Single-Phase, Synchronous

Buck Controller

buck switching regulator controller. With its integrated drivers, the

ADP3209D is optimized for converting the notebook battery voltage

to render the supply voltage required by high performance Intel

chipsets. An internal 5−bit DAC is used to read a VID code directly

from the chipset and to set the GMCH core voltage to a value within

the range of 0.4 V to 1.25 V.

programmable switching frequency that can be optimized for

efficiency depending on the output current requirement. In addition,

the ADP3209D 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 a load transient. The

ADP3209D also provides accurate and reliable current overload

protection and a delayed power−good output. The IC supports

On−The−Fly (OTF) output voltage changes requested by the chipset.

temperature range of 0°C to 100°C and is available in a 32−lead

LFCSP.

Features

•

Applications

•

March, 2010 − Rev. 0

The ADP3209D is a highly efficient, single−phase, synchronous

The ADP3209D uses a multi−mode architecture. It provides

The ADP3209D is specified over the extended commercial

Specifications

Overtemperature

Load Operation

Additional Design Flexibility

(VID) OTF Transients

Single−Chip Solution

Fully Compatible with the Intel® GMCH Chipset Voltage Regulator

Integrated MOSFET Drivers

Input Voltage Range of 3.3 V to 22 V

±8 mV Worst−Case Differentially Sensed Core Voltage Error

Automatic Power−Saving Modes Maximize Efficiency During Light

Soft Transient Control Reduces Inrush Current and Audio Noise

Independent Current Limit and Load Line Setting Inputs for

Built−In Power−Good Masking Supports Voltage Identification

5−Bit, Digitally Programmable DAC with 0.4 V to 1.25 V Output

Short−Circuit Protection with Latchoff Delay

Output Current Monitor

32−Lead LFCSP

This is a Pb−Free Device

Notebook Power Supplies for Next−Generation Intel Chipsets

See detailed ordering and shipping information in the package

dimensions section on page 26 of this data sheet.

FBRTN

COMP

CREF

IMON

IREF

RPM

ORDERING INFORMATION

YYWW = Date Code

MARKING DIAGRAM

http://onsemi.com

PIN ASSIGNMENT

AWLYYWWG

= Assembly Location

= Wafer Lot

= Pb−Free Package

ADP3209D

(top view)

Publication Order Number:

CASE 932AE

LFCSP32

ADP3209D/D

VCC

BST

DRVH

PVCC

DRVL

PGND

GND

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