Datasheet > NCP5220

NCP5220

更新时间： 2024-11-26 04:37:55

品牌	Logo	应用领域
安森美 - ONSEMI		控制器
页数	文件大小	规格书
18页	174K
描述
3−in−1 PWM Dual Buck and Linear Power Controller

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NCP5220 数据手册

NCP5220

3−in−1 PWM Dual Buck and

Linear Power Controller

The NCP5220 3−in−1 PWM a Dual Buck and Linear Power

Controller, is a complete power solution for MCH and DDR memory.

This IC combines the efficiency of PWM controllers for the VDDQ

supply and the MCH core supply voltage with the simplicity of linear

regulator for the VTT termination voltage.

This IC contains two synchronous PWM buck controller for driving

four external N−Ch FETs to form the DDR memory supply voltage

(VDDQ) and the MCH regulator. The DDR memory termination

regulator (VTT) is designed to track at the half of reference voltage

with sourcing and sinking current.

http://onsemi.com

MARKING

DIAGRAM

NCP5220

AWLYYWW

Protective features include, soft−start circuitry, undervoltage

monitoring of 5VDUAL, BOOT voltage and thermal shutdown. The

device is housed in a thermal enhanced space−saving DFN−20

package.

DFN−20

MN SUFFIX

CASE 505AB

NCP5220= Specific Device Code

= Assembly Location

= Wafer Lot

= Year

Features

• Pb−Free Package is Available*

= Work Week

• Incorporates Synchronous PWM Buck Controllers for VDDQ and

VMCH

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

PIN CONNECTIONS

• All External Power MOSFETs are N−Channel

COMP

SW_DDQ

BG_DDQ

TG_DDQ

BOOT

• Adjustable VDDQ and VMCH by External Dividers

• VTT Tracks at Half the Reference Voltage

FBDDQ

PGND

VTT

• Fixed Switching Frequency of 250 kHz for VDDQ and VMCH

• Doubled Switching Frequency of 500 kHz for VDDQ Controller in

Standby Mode to Optimize Inductor Current Ripple and Efficiency

• Soft−Start Protection for All Controllers

5VDUAL

COMP_1P5

SLP_S3

VDDQ

AGND

FBVTT

TG_1P5

• Undervoltage Monitor of Supply Voltages

SLP_S5

FB1P5

BG_1P5

• Overcurrent Protections for DDQ and VTT Regulators

• Fully Complies with ACPI Power Sequencing Specifications

GND_1P5

NOTE: Pin 21 is the thermal pad

on the bottom of the device.

• Short Circuit Protection Prevents Damage to Power Supply Due to

Reverse DIMM Insertion

• Thermal Shutdown

• 5x6 DFN−20 Package

ORDERING INFORMATION

Device

Package

Shipping†

Typical Applications

NCP5220MNR2

DFN−20

2500 Tape & Reel

• DDR I and DDR II Memory and MCH Power Supply

NCP5220MNR2G

DFN−20

(Pb−Free)

†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.

*For additional information on our Pb−Free strategy and soldering details, please

download the ON Semiconductor Soldering and Mounting Techniques

Reference Manual, SOLDERRM/D.

Publication Order Number:

November, 2004 − Rev. 4

NCP5220/D

12 3 4 5 6 7...18

中文翻译

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与NCP5220相关器件

型号	品牌	获取价格	描述	数据表
NCP5220A	ONSEMI	获取价格	3âinâ1 PWM Dual Buck and Linear Power Con
NCP5220AMNR2	ONSEMI	获取价格	3âinâ1 PWM Dual Buck and Linear Power Con
NCP5220AMNR2G	ROCHESTER	获取价格	2A SWITCHING CONTROLLER, 566kHz SWITCHING FREQ-MAX, DSO20, 6 X 5 MM, DFN-20
NCP5220AMNR2G	ONSEMI	获取价格	3âinâ1 PWM Dual Buck and Linear Power Con
NCP5220MNR2	ONSEMI	获取价格	3−in−1 PWM Dual Buck and Linear Power Controller
NCP5220MNR2G	ONSEMI	获取价格	3−in−1 PWM Dual Buck and Linear Power Controller
NCP5222	ONSEMI	获取价格	High Performance Dual-Channel / Two-Phase Synchronous Buck Controller for Notebook Power S
NCP5222MNR2G	ONSEMI	获取价格	High Performance Dual-Channel / Two-Phase Synchronous Buck Controller for Notebook Power S
NCP5228	ONSEMI	获取价格	Synchronous Buck Controller with Auto Power Saving
NCP5228MNTWG	ONSEMI	获取价格	Synchronous Buck Controller with Auto Power Saving

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