Datasheet > NCP5203/D

NCP5203/D

更新时间： 2024-09-26 23:53:27

品牌	Logo	应用领域
其他 - ETC		双倍数据速率控制器
页数	文件大小	规格书
10页	67K
描述
2-in-1 DDR Power Controller

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NCP5203/D 数据手册

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

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, under−voltage

monitoring of 5VDUAL, over protection current (OCP), and thermal

shutdown. The IC is packaged in 18−lead QFN.

http://onsemi.com

MARKING

DIAGRAM

NCP5203

18−LEAD QFN, 5 x 6 mm

MN SUFFIX

AWLYYWW

CASE 505

Features

• Supports DDR I and DDR II

= Assembly Location

• Incorporates VDDQ, VTT Regulators

• Operates from Single 5 V Supply

• VTT Regulator includes Integrated Power FETs Sourcing/Sinking

up to 2.0 A

WL = Wafer Lot

YY = Year

WW = Work Week

• All External Power MOSFETs are N−Channel

• Adjustable VDDQ

PIN CONNECTIONS

• 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

VDDQEN

VTTEN

PGOOD

REFSNS

FBVTT

AGND

COMP

FBDDQ

VDDQ

VTT

PGND

BST

BGDDQ

TGDDQ

5VDUAL

SWDDQ

OCDDQ

• Housed in QFN−18

Typical Applications

• DDR Memory Supply and Termination Voltage

• Active Termination Busses (SSTL−2, SSTL−3)

ORDERING INFORMATION

Device

Package

Shipping†

NCP5203MNR2 18−LeadQFN 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

Semiconductor Components Industries, LLC, 2003

Publication Order Number:

October, 2003 − Rev. 0

NCP5203/D

12 3 4 5 6 7...10

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NCP5208_06	ONSEMI	获取价格	DDR−I/II Termination Regulator
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NCP5208DR2G	ONSEMI	获取价格	DDR−I/II Termination Regulator
NCP5209/D	ETC	获取价格	4-In-1 PWM Buck and Tri-Linear DDR Power Controller
NCP5209MN	ONSEMI	获取价格	2.4A SWITCHING CONTROLLER, 550kHz SWITCHING FREQ-MAX, PDSO20, 5 X 6 MM, PLASTIC, QFN-20
NCP5209MNR2	ONSEMI	获取价格	2.4A SWITCHING CONTROLLER, 550kHz SWITCHING FREQ-MAX, PDSO20, 5 X 6 MM, PLASTIC, QFN-20