Datasheet > NCP5209/D

NCP5209/D

更新时间： 2024-11-25 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
12页	87K
描述
4-In-1 PWM Buck and Tri-Linear DDR Power Controller

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NCP5209/D 数据手册

NCP5209

Product Preview

4−In−1 PWM Buck and

Tri−Linear DDR Power

Controller

http://onsemi.com

MARKING

The NCP5209 4−In−1 PWM Buck and Tri−Linear Power Controller

is a complete ACPI compliant power solution for MCH and DDR

memory. This IC combines the high efficiency of a PWM controller

for the VDDQ supply with the simplicity of linear regulator for the

VTT termination voltage as well as the MCH core supply voltage.

This IC contains a synchronous PWM buck controller for driving

two external NFETs to form the DDR memory supply voltage

(VDDQ). The DDR memory termination regulator (VTT) is designed

to track at the half of reference voltage while sourcing and sinking

current. The two linear regulator controllers driving two external

NFETs are cascaded to produce the MCH core voltage (VMCH).

Protective features include, soft−start circuitry, under−voltage

monitoring of 5VDUAL, 5VATX and 12VATX, and thermal

shutdown. The IC is packaged in a QFN−20.

DIAGRAM

NCP5209

AWLYYWW

20−LEAD QFN

MN SUFFIX

CASE 505AB

NCP5209= Specific Device Code

= Assembly Location

= Wafer Lot

= Year

= Work Week

Features

• Synchronous PWM Buck Controller for VDDQ

• Integrated Power FETs with VTT Regulator Source/Sink up to 2.0 A

• Two Linear Regulator Drivers for VMCH

• All External Power MOSFETs are N−Channel

• Adjustable VDDQ and VMCH by External Dividers

• VTT Tracks at Half the Reference Voltage or can be Adjusted

Externally

PIN CONNECTIONS

COMP

SW_DDQ

BG_DDQ

TG_TDQ

BOOT

FBDDQ

PGND

VTT

5VDUAL

OCDDQ

BUF_Cut

DRV_2P4

FB2P4

VDDQ

• Fixed Switching Frequency of 250 kHz for DDQ Regulator in

Normal Mode Doubled switching frequency (500 kHz) for DDQ

Regulator in Standby Mode

AGND

FBVTT

DDQ_REF

FB1P5

DRV_1P5

• Soft−Start Protection for all Regulators

• Under−Voltage Monitoring of Supply Voltages

• Over−Current Protection for DDQ and VTT Regulators

• Fully Complies with ACPI Power Sequencing Specifications

• Protects against Reverse DIMM Insertion

• Thermal Shutdown

NOTE: Pin 21 is the thermal pad

on the bottom of the device.

ORDERING INFORMATION

Device

NCP5209MN

Package

Shipping†

Rail

• Housed in QFN−20

20−Lead QFN*

Applications

NCP5209MNR2 20−Lead QFN* Tape and Reel

*5 x 6 mm

• DDR I and DDR II Memory and MCH Power Supply

†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, 2003

Publication Order Number:

December, 2003 − Rev. P1

NCP5209/D

12 3 4 5 6 7...12

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与NCP5209/D相关器件

型号	品牌	获取价格	描述	数据表
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
NCP5210	ONSEMI	获取价格	3-in-1 PWM Dual Buck and Linear DDR Power Controller
NCP5210/D	ETC	获取价格	3-In-1 PWM Dual Buck and Linear DDR Power Controller
NCP5210MN	ONSEMI	获取价格	DUAL SWITCHING CONTROLLER, 550kHz SWITCHING FREQ-MAX, PDSO20, 6 X 5 MM, PLASTIC, QFN-20
NCP5210MNR2	ONSEMI	获取价格	3-in-1 PWM Dual Buck and Linear DDR Power Controller
NCP5210MNR2G	ONSEMI	获取价格	3-in-1 PWM Dual Buck and Linear DDR Power Controller
NCP5211	ONSEMI	获取价格	Low Voltage Synchronous Buck Controller
NCP5211A	ONSEMI	获取价格	Low Voltage Synchronous Buck Controller
NCP5211A/D	ETC	获取价格	Low Voltage Synchronous Buck Controller

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