© Semiconductor Components Industries, LLC, 2008

March, 2008 − Rev. P0

1

Publication Order Number:

ADP4100/D

ADP4100

Product Preview

Programmable Multi-Phase

Synchronous Buck

Converter

The ADP4100 is an integrated power control IC for VR11.1

applications. The ADP4100 can be programmed for 1−, 2−, 3−, 4−, 5−

or 6−phase operation, allowing for the construction of up to six

complementary buck switching stages. The ADP4100 supports PSI,

which is a power state indicator and can be used to reduce number of

operating phases at light loads.

The ADP4100 is optimized for converting a 12 V main supply into

the core supply voltage required by high performance Intel processors.

It uses an internal 8−bit DAC to read the voltage identification (VID)

code directly from the processor, which is used to set the output

voltage between 0.375 V and 1.6 V.

Features

Typical Applications

This document contains information on a product under development. ON Semiconductor

reserves the right to change or discontinue this product without notice.

MARKING

DIAGRAM

http://onsemi.com

PIN ASSIGNMENT

LFCSP48

CASE 932AD

Device*

Package

ORDERING INFORMATION

ADP4100JCPZ−REEL LFCSP48 2500/Tape & Reel

†For information on tape and reel specifications,

including part orientation and tape sizes, please

refer to our Tape and Reel Packaging Specifications

Brochure, BRD8011/D.

IREF

LLSET

IMON

1

2

3

4

GND 6

7

8

9

10

11

12

NC

NC

NC

TTSENSE

VRHOT

PWM2

PWM3

PWM4

SW3

SW4

SW5

SW6

35

PWM1

36

34

33

32

31

30

29

28

27

26

25

ADP4100

TOP VIEW

(Not to Scale)

PIN 1

INDICATOR

PSI_SET

PWM5

PWM6

SW2

SW1

NC

EN 5

ADP4100

JCPZ

#YYWW

XXXXX

CCCCC

ADP4100JCPZ−RL7 LFCSP48 750/Tape & Reel

xx

= Device Code

#

= Pb−Free Package

YYWW = Date Code

XXX

= Assembly Lot

CCC

= Country of Origin

*The “Z’ suffix indicates Pb−Free package.