NCP5380AMNR2G datasheet(1/28 Pages) ONSEMI

Part #	NCP5380AMNR2G

Description	7-Bit, Programmable, Single-Phase, Synchronous Buck Switching Regulator Controller

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Manufacturer	ONSEMI [ON Semiconductor]

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April, 2011 − Rev. 3

1

Publication Order Number:

NCP5380/D

NCP5380, NCP5380A

7-Bit, Programmable,

Single-Phase, Synchronous

Buck Switching Regulator

Controller

General Description

The NCP5380/A is a highly efficient, single−phase, synchronous

buck switching regulator controller. With its integrated drivers, the

NCP5380/A is optimized for converting the silver box voltage to the

supply voltage required by high performance Intel chipsets. An

internal 7−bit DAC is used to read a VID code directly from the

chipset.

The NCP5380/A uses a multimode architecture. It provides

programmable switching frequency that can be optimized for

efficiency depending on the output current requirement. In addition,

the NCP5380/A 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

NCP5380/A 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.

The NCP5380 is specified over the temperature range of 0

°C to

85

°C, while the NCP5380A extends the temperature range to −40°C to

100

°C. The NCP5380/A is available in a 32−lead QFN.

Features

• Single−chip Solution

• Fully Compatible with the Intel VR11 CPU Chipset Voltage

Regulator Specifications

• Integrated MOSFET Drivers

• ±8 mV Worst−case Differentially Sensed Core Voltage Error over

Temperature

• Automatic Power−saving Modes Maximize Efficiency During Light

Load Operation

• Soft Transient Control Reduces Inrush Current and Audio Noise

• Independent Current Limit and Load Line Setting Inputs for

Additional Design Flexibility

• Built−in Power−good Masking Supports Voltage Identification (VID)

OTF Transients

• 7−bit, Digitally Programmable DAC

• Short−circuit Protection with Programmable Latchoff Delay

• Current Monitor Output Signal

• 32−lead QFN

• This is a Pb−Free Device

Applications

• Desktop Power Supplies for Next−generation Intel Chipsets

http://onsemi.com

MARKING

DIAGRAM

Device

Package

Shipping†

ORDERING INFORMATION

†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.

QFN32, 5x5

CASE 488AM

MN SUFFIX

NCP5380MNR2G

QFN−32

(Pb−Free)

5000 / Tape & Reel

32

1

NCP5380

AWLYYWWG

G

1

NCP5380 = Specific Device Code

A

= Assembly Location

WL

= Wafer Lot

YY

= Year

WW

= Work Week

G

= Pb Free Package

VCC

BST

DRVH

SW

PVCC

DRVL

PGND

GND

PWRGD

IMON

N/C

FBRTN

FB

COMP

GND

ILIM

NCP5380

(Top View)

PIN CONFIGURATION

1

(Note: Microdot may be in either location)

NCP5380AMNR2G

QFN−32

(Pb−Free)

5000 / Tape & Reel

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