© 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
• Supports Both VR11 and VR11.1 Specifications
• Digitally Programmable 0.375 V to 1.6 V Output
• Selectable 1−, 2−, 3−, 4−, 5− or 6−Phase Operation
• Fast−Enhanced PWM FlexModet
• TRDET to Improve Load Release
• Active Current Balancing Between All Output Phases
• Supports On−The−Fly (OTF) VID Code Changes
• Supports PSI − Power Saving Mode
• Short Circuit Protection with Latchoff Delay
• This is a Pb−Free Device
Typical Applications
• Servers
• Desktop PC’s
• POLs (Memory)
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 Shipping
†
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.
13
14
15
16
17
18
19
20
21
22
23
24
FBRTN
COMP
FB
CSREF
CSSUM
CSCOMP
IREF
LLSET
IMON
ODN
OD1
48
47
46
45
44
43
42
41
40
39
38
37
VCC3
PSI
VID0
VID1
VID2
VID3
VID4
VID5
1
2
3
4
GND 6
7
8
9
10
11
12
NC
NC
NC
TTSENSE
VRHOT
ILIMFS
RT
RAMPADJ
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
PWRGD
PSI_SET
VID7
VCC
VID6
TRDET
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.
