NCP5203
2鈭抜n鈭? DDR Power
Controller
The NCP5203 2鈭抜n鈭? DDR Power Controller is a complete power
solution for an ACPI compliant high current DDR memory system.
This IC combines the efficiency of a PWM controller for the VDDQ
supply with the simplicity of linear regulator for the VTT
termination voltage. The NCP5203 contains a synchronous PWM
buck controller for driving two external NFETs to form the DDR
memory supply voltage (VDDQ). The
$2.0
A user adjustable VTT
terminator regulator has short circuit protection. An internal power
good function monitors both the VDDQ and VTT outputs and signals
if a fault occurs. Protective features include soft鈭抯tart, undervoltage
monitoring of 5VDUAL, over protection current (OCP), and thermal
shutdown. The IC is packaged in 18鈭抣ead QFN.
Features
http://onsemi.com
MARKING
DIAGRAM
18
1
18鈭扡EAD QFN, 5 x 6 mm
MN SUFFIX
CASE 505
1
NCP5203
AWLYYWW
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Supports DDR I and DDR II
Incorporates VDDQ, VTT Regulators
Operates from Single 5 V Supply
VTT Regulator includes Integrated Power FETs Sourcing/Sinking
up to 2.0 A
All External Power MOSFETs are N鈭扖hannel
Adjustable VDDQ
Adjustable VTT
Fixed Switching Frequency of 300 kHz for VDDQ in S0
Fixed Switching Frequency of 600 kHz for VDDQ in S3
Soft鈭扴tart Protection for VDDQ
Undervoltage Monitor of 5VDUAL
Short鈭扖ircuit Protection for VDDQ and VTT
Thermal Shutdown
Housed in QFN鈭?8
Pb鈭扚ree Package is Available*
A
WL
YY
WW
= Assembly Location
= Wafer Lot
= Year
= Work Week
PIN CONNECTIONS
VDDQEN
VTTEN
PGOOD
REFSNS
FBVTT
AGND
SS
COMP
FBDDQ
1
2
3
4
5
6
7
8
9
18
17
16
15
14
13
12
11
10
VDDQ
VTT
PGND
BST
BGDDQ
TGDDQ
5VDUAL
SWDDQ
OCDDQ
Typical Applications
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DDR Memory Supply and Termination Voltage
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Active Termination Busses (SSTL鈭?, SSTL鈭?)
ORDERING INFORMATION
Device
NCP5203MNR2
NCP5203MNR2G
Package
QFN
QFN
(Pb鈭扚ree)
Shipping
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2500 Tape & Reel
2500 Tape & Reel
鈥燜or information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specifications
Brochure, BRD8011/D
*For additional information on our Pb鈭扚ree strategy and soldering details, please
download the ON Semiconductor Soldering and Mounting Techniques Reference
Manual, SOLDERRM/D.
漏
Semiconductor Components Industries, LLC, 2005
1
January, 2005 鈭?Rev. 1
Publication Order Number:
NCP5203/D
NCP5203MNR2G 產(chǎn)品屬性
2,500
集成電路 (IC)
PMIC - 穩(wěn)壓器 - 專用型
-
控制器，DDR
4.5 V ~ 5.5 V
2
-
0°C ~ 70°C
表面貼裝
18-VFDFN 裸露焊盤
18-DFN（5x6）
帶卷 (TR)
NCP5203MNR2GOS
NCP5203MNR2G相關(guān)型號PDF文件下載
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