ADP3430 datasheet(1/26 Pages) ONSEMI

Part #	ADP3430

Description	2??to 3?뭁hase Synchronous Buck Controller

PDF	26 Pages

Scroll/Zoom	100%

Manufacturer	ONSEMI [ON Semiconductor]

Direct Link	http://www.onsemi.com

Logo

1 / 26 page

July, 2009 − Rev. 2

1

Publication Order Number:

ADP3430/D

ADP3430

8−Bit, Programmable

2− to 3−Phase Synchronous

Buck Controller

The ADP3430 is a highly efficient, multi−phase, synchronous buck

switching regulator controller optimized for converting a 12 V main

supply voltage into the core supply voltage of high performance Intel

processors. It uses an internal 8−bit DAC to read a Voltage

Identification (VID) code directly from the processor, to set the output

voltage between 0.5 V and 1.6 V.

This device uses a multi−mode control architecture to drive the

logic−level PWM outputs. The switching frequency can be

programmed according to VR size and efficiency. The chip can

provide 2− or 3−phase operation, allowing for the construction of up to

four complementary buck switching stages.

The ADP3430 also includes programmable no load offset and load

line slope setting function that adjusts the output voltage as a function

of the load current, optimally positioning it for a system transient. The

ADP3430 also provides accurate and reliable short−circuit protection,

adjustable current limit, and a delayed power−good output that

accommodates On−The−Fly (OTF) output voltage changes requested

by the CPU.

Features

• Selectable 2− or 3−Phase Operation at Up to 1 MHz Per Phase

• ±8 mV Worst−Case Differential Sensing Error

• Logic−Level PWM Outputs for Interface to External High

Power Drivers

• Fast−Enhanced PWM FlexModet for Excellent Load

Transient Performance

• TRDET to Improve Load Release

• Active Current Balancing Between All Output Phases

• Built−In Power−Good/Crowbar Blanking Supports Dynamic

VID Code Changes

• Digitally Programmable 0.5 V to 1.6 V Output Supports

VR11.1 Specification

• Programmable Overcurrent Protection with Programmable

Latchoff Delay

• This is a Pb−Free Device

Typical Applications

• Desktop PC Power Supplies for:

♦ DDR Memory

♦ VRM Modules

http://onsemi.com

PIN ASSIGNMENT

Device

Package

Shipping†

ORDERING INFORMATION

ADP3430JCPZ−RL LFCSP40

(Pb−Free)

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.

MARKING

DIAGRAM

Package Name

LFCSP40

CASE Number

932AC

ADP3430 = Device Code

#

= Pb−Free Package

YY

= Date Code

ZZ

= Assembly Lot Number

CC

= Country of Origin

ADP3430

#_YYYYYY

ZZZZZZZZ

CCCCC

PIN 1

INDICATOR

1

EN

2

PWRGD

3

FBRTN

4

FB

5

COMP

6

SS

7

DELAY

8

TRDET

9

VRHOT

10

TTSNS

23

SW3

24

SW2

25

SW1

26

ODN

27

NC

28

PWM3

29

PWM2

30

PWM1

22

NC

21

IMON

TOP VIEW

ADP3430

Similar Part No. - ADP3430

Manufacturer	Part #	Datasheet	Description
Analog Devices	ADP3401	281Kb / 12P	GSM Power Management System REV.0
	ADP3401ARU	281Kb / 12P	GSM Power Management System REV.0
	ADP3401	285Kb / 12P	GSM Power Management System REV. 0
	ADP3402	277Kb / 12P	GSM Power Management System REV.0
	ADP3402ARU	277Kb / 12P	GSM Power Management System REV.0

More results

Similar Description - ADP3430

Manufacturer	Part #	Datasheet	Description
ON Semiconductor	CS5421	298Kb / 14P	Dual Out?뭥f?뭁hase Synchronous Buck Controller with Remote Sense July, 2006 ??Rev. 10
	CS5422	369Kb / 17P	Dual Out?뭥f?뭁hase Synchronous Buck Controller with Current Limit July, 2006 ??Rev. 7
	NCP5306	872Kb / 24P	Three?뭁hase VRM 9.0 Buck Controller July, 2006 ??Rev. 3
	NCP5422A	163Kb / 16P	Dual Out?뭥f?뭁hase Synchronous Buck Controller with Current Limit April, 2006 ??Rev. 7
Analog Devices	ADP3193A	1,007Kb / 32P	8-Bit, Programmable, 2- to 3-Phase, Synchronous Buck Controller 5/07-Revision 0
ON Semiconductor	ADP3193A	577Kb / 29P	8-Bit, Programmable, 2- to 3-Phase, Synchronous Buck Controller February 2008 ??Rev. 1
	NCP81174	154Kb / 18P	4/3/2-Phase Synchronous Buck Controller March, 2015 ??Rev. 5
	CS5307	880Kb / 24P	Four?뭁hase VRM 9.0 Buck Controller July, 2006 ??Rev. 9
	NCP81174	148Kb / 18P	4/3/2-Phase Synchronous Buck Controller March, 2015 ??Rev. 5
	NCP81174N	207Kb / 18P	4/3/2-Phase Synchronous Buck Controller March, 2016 ??Rev. 0

More results

ADP3430 Datasheet(PDF) 1 Page - ON Semiconductor

ADP3430 Datasheet(HTML) 1 Page - ON Semiconductor

Similar Part No. - ADP3430

Similar Description - ADP3430

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26

Datasheet Download

Link URL