参数资料
型号: NCP5203MNR2G
厂商: ON Semiconductor
文件页数: 1/10页
文件大小: 0K
描述: IC CTRLR PWR DDR DUAL 5X6 18-DFN
产品变化通告: Product Discontinuation 01/Oct/2008
标准包装: 2,500
应用: 控制器,DDR
输入电压: 4.5 V ~ 5.5 V
输出数: 2
工作温度: 0°C ~ 70°C
安装类型: 表面贴装
封装/外壳: 18-VFDFN 裸露焊盘
供应商设备封装: 18-DFN(5x6)
包装: 带卷 (TR)
其它名称: NCP5203MNR2GOS
NCP5203
2?in?1 DDR Power
Controller
The NCP5203 2?in?1 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
http://onsemi.com
MARKING
DIAGRAM
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?start, undervoltage
monitoring of 5VDUAL, over protection current (OCP), and thermal
shutdown. The IC is packaged in 18?lead QFN.
18
1
18?LEAD QFN, 5 x 6 mm
MN SUFFIX
1
NCP5203
AWLYYWW
CASE 505
Features
?
?
?
?
Supports DDR I and DDR II
Incorporates VDDQ, VTT Regulators
Operates from Single 5 V Supply
VTT Regulator includes Integrated Power FETs Sourcing/Sinking
A
WL
YY
WW
= Assembly Location
= Wafer Lot
= Year
= Work Week
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up to 2.0 A
All External Power MOSFETs are N?Channel
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?Start Protection for VDDQ
Undervoltage Monitor of 5VDUAL
Short?Circuit Protection for VDDQ and VTT
Thermal Shutdown
Housed in QFN?18
Pb?Free Package is Available*
VDDQEN
VTTEN
PGOOD
REFSNS
FBVTT
AGND
SS
COMP
FBDDQ
PIN CONNECTIONS
1 18
2 17
3 16
4 15
5 14
6 13
7 12
8 11
9 10
VDDQ
VTT
PGND
BST
BGDDQ
TGDDQ
5VDUAL
SWDDQ
OCDDQ
Typical Applications
? DDR Memory Supply and Termination Voltage
? Active Termination Busses (SSTL?2, SSTL?3)
ORDERING INFORMATION
Device Package Shipping ?
NCP5203MNR2
NCP5203MNR2G
QFN
QFN
2500 Tape & Reel
2500 Tape & Reel
(Pb?Free)
?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
*For additional information on our Pb?Free strategy and soldering details, please
download the ON Semiconductor Soldering and Mounting Techniques Reference
Manual, SOLDERRM/D.
? Semiconductor Components Industries, LLC, 2005
January, 2005 ? Rev. 1
1
Publication Order Number:
NCP5203/D
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