Datasheet > NCP5220A

NCP5220A

更新时间： 2024-11-24 01:23:47

品牌	Logo	应用领域
安森美 - ONSEMI		/
页数	文件大小	规格书
18页	172K
描述
3âinâ1 PWM Dual Buck and Linear Power Controller

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NCP5220A 数据手册

NCP5220A

3−in−1 PWM Dual Buck and

Linear Power Controller

The NCP5220A 3−in−1 PWM 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.

http://onsemi.com

This IC contains two synchronous PWM buck controllers 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 half of the

reference voltage with sourcing and sinking current.

DFN−20

MN SUFFIX

CASE 505AB

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.

MARKING DIAGRAM

N5220A

AWLYYWW G

Features

• Incorporates Synchronous PWM Buck Controllers for VDDQ and

VMCH

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

• All External Power MOSFETs are N−Channel

• Adjustable VDDQ and VMCH by External Dividers

• VTT Tracks at Half the Reference Voltage

• 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

• Undervoltage Monitor of Supply Voltages

• Overcurrent Protections for DDQ and VTT Regulators

• VTT Regulators Soft−Start Current Protection

N5220A = Device Code

= Assembly Location

= Wafer Lot

= Year

= Work Week

= Pb−Free Package

(Note: Microdot may be in either location)

PIN CONNECTIONS

COMP

SW_DDQ

BG_DDQ

TG_DDQ

BOOT

FBDDQ

PGND

VTT

• Fully Complies with ACPI Power Sequencing Specifications

• Short Circuit Protection Prevents Damage to Power Supply Due to

Reverse DIMM Insertion

5VDUAL

COMP_1P5

SLP_S3

VDDQ

AGND

FBVTT

• Thermal Shutdown

TG_1P5

SLP_S5

FB1P5

BG_1P5

• 5x6 DFN−20 Package

GND_1P5

• Pb−Free Package is Available*

NOTE: Pin 21 is the thermal pad

on the bottom of the device.

Typical Applications

• DDR I and DDR II Memory and MCH Power Supply

ORDERING INFORMATION

†

Device

Package

Shipping

NCP5220AMNR2

NCP5220AMNR2G

DFN−20 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 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.

Semiconductor Components Industries, LLC, 2005

Publication Order Number:

December, 2005 − Rev. 4

NCP5220A/D

12 3 4 5 6 7...18

中文翻译

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与NCP5220A相关器件

型号	品牌	获取价格	描述	数据表
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
NCP5230	ONSEMI	获取价格	Precise Low Voltage Synchronous Buck

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