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NCP81039MNTWG

Description
Switching Controllers SYSTEM AGENT WITH 2-BIT C
Categorysemiconductor    Power management   
File Size180KB,11 Pages
ManufacturerON Semiconductor
Websitehttp://www.onsemi.cn
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NCP81039MNTWG Overview

Switching Controllers SYSTEM AGENT WITH 2-BIT C

NCP81039MNTWG Parametric

Parameter NameAttribute value
Product CategorySwitching Controllers
ManufacturerON Semiconductor
RoHSDetails
PackagingReel
Factory Pack Quantity3000
NCP81039
Product Preview
Synchronous Buck
Controller with Auto Power
Saving Mode and 2-Bit VID
Inputs for System Agent
NCP81039 is a synchronous buck controller that is optimized for
converting the battery voltage or adaptor voltage into power supply
rails required in notebook and desktop system. NCP81039 is designed
for applications requiring dynamically selected slew−rate controlled
output voltages. The soft−start is programmed by a single capacitor.
Voltage identification logic−inputs select four resistor programmed
set−point reference voltages that directly set the output voltage of the
converter between 0.65 V to 1.5 V. NCP81039 supports high
efficiency, fast transient response and provides power good signal. ON
Semiconductor proprietary adaptive−ripple control enables seamless
transition from CCM to DCM, where converter runs at reduced
switching frequency with much higher efficiency. The part operates
with input voltage ranging from 3.3 V to 28 V. NCP81039 is available
in a 20−pin 3 mm x 3 mm QFN package.
Features
http://onsemi.com
MARKING
DIAGRAM
TBD
ALYWG
G
20 PIN QFN, 3x3
MN SUFFIX
CASE 485BC
TBD
A
L
Y
W
G
= Specific Device Code
= Assembly Location
= Wafer Lot
= Year
= Work Week
= Pb−Free Package
(Note: Microdot may be in either location)
Wide Input Voltage Range: from 3.3 V to 28 V
Three Selectable Fixed Frequency 300 KHz, 400 KHz or 600 KHz
2−Bit VID Selects Four Independent Voltages from 0.65 V to 1.5 V
±1.0%
System Accuracy
Differential Remote Output Voltage Sensing
Soft Transient Control Reduces Inrush Current and Audio Noise
Build−in Power−Good Masking Supports Voltage Identification
(VID) On−The−Fly Transients
Simple Resistor Programming Voltage Levels
Programmable Soft−Start through a Single Capacitor
Automatic Power−Saving Mode
Input Supply Voltage Feed Forward Control
Resistive or Lossless Inductor’s DCR Current Sensing
Over−Temperature Protection
Built−in Adaptive Gate Drivers
Output Discharge Operation
Built−in Over−Voltage, Under−Voltage and Over−Current Protection
and Power Good Output
This is a Pb−Free Device
Notebooks, Desktops & Servers
I/O Supplies
System Power Supplies
Graphic Cards
PIN CONNECTIONS
COMP
FB
FBRTN
CSN
CSP
EN
VCC
VID1
VID0
V3
1
AGND
BST
GH
SWN
VCCP
GL/FSET
ORDERING INFORMATION
Device
NCP81039MNTWG
Package
QFN20
(Pb−Free)
Shipping
TBD /
Tape & Reel
Applications
†For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specification
Brochure, BRD8011/D.
This document contains information on a product under development. ON Semiconductor
reserves the right to change or discontinue this product without notice.
©
Semiconductor Components Industries, LLC, 2011
November, 2011
Rev. P0
1
V2
V1
VREF
PG
PGND
(Top View)
Publication Order Number:
NCP81039/D
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