Datasheet > NCP5228

NCP5228

更新时间： 2024-09-28 12:04:59

品牌	Logo	应用领域
安森美 - ONSEMI		控制器
页数	文件大小	规格书
11页	190K
描述
Synchronous Buck Controller with Auto Power Saving

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中文翻译

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NCP5228 数据手册

NCP5228

Advance Information

Synchronous Buck Controller

with Auto Power Saving

Mode and Built-In LDO

http://onsemi.com

MARKING

NCP5228 is a dual synchronous buck controller that is optimized for

converting the battery voltage or adaptor voltage into multiple power

rails required in desktop and notebook system. NCP5228 consists of

two buck switching controllers with fixed 5.0 V output on channel 2,

3.3 V on channel 1 and two on−board LDOs with three outputs: 5 V /

60 mA and 3.3 V or 12 V / 10 mA. NCP5228 supports high efficiency,

fast transient response and provides power good signals. ON

Semiconductor proprietary adaptive−ripple control enables seamless

transition from CCM to DCM, where converter runs at reduced

switching frequency with much higher efficiency at light load. The

part operates with supply voltage ranging from 5.5 V to 28 V.

NCP5228 is available in a 28−pin QFN package.

DIAGRAM

NCP5228

ALYWG

28 PIN QFN, 4x4

MN SUFFIX

CASE 485AR

NCP5228 = Specific Device Code

= Assembly Location

= Wafer Lot

= Year

= Work Week

= Pb−Free Package

Features

(Note: Microdot may be in either location)

• Wide Input Voltage Range: from 5.5 V to 28 V

• Built−in 5 V / 60 mA LDO

• Built−in selectable 3.3 V or 12 V / 10 mA LDO

PIN CONNECTIONS

• Three Selectable Fixed Frequency 300 KHz, 400 KHz or 600 KHz

• 180 Interleaved Operation Between the Two Channels in

Continue−Conduction−Mode (CCM)

• Selected Power−Saving Mode/Forced PWM Mode

• Transient−Response−Enhancement (TRE) Control

• Input Supply Voltage Feed Forward Control

• Resistive or Lossless Inductor’s DCR Current Sensing

• Over−Temperature Protection

GH2

BST2

SWN2

GL2

PGND2

CSP2

CSN2

GH1

BST1

SWN1

GL1/FSET

PGND1

CSP1

GND

• Internal Fixed 13 ms Soft−Start

• Fixed Output Voltages 5 V and 3.3 V

• Power Good Outputs for Both Channels

• Built−in Adaptive Gate Drivers

CSN1

• Output Discharge Operation

• Built−in Over−Voltage, Under−Voltage Protection

• Accurate Over−Current Protection

• Thermal Shutdown

(Top View)

• This is a Pb−Free Device

ORDERING INFORMATION

Applications

†

Device

NCP5228MNTWG

Package

Shipping

• Desktop / Notebook Computers

• System Power Supplies

• I/O Power Supplies

QFN−28

(Pb−Free)

4,000 /

Tape & Reel

†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 new product. Specifications and information

herein are subject to change without notice.

Publication Order Number:

October, 2013 − Rev. P6

NCP5228/D

12 3 4 5 6 7...11

中文翻译

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与NCP5228相关器件

型号	品牌	获取价格	描述	数据表
NCP5228MNTWG	ONSEMI	获取价格	Synchronous Buck Controller with Auto Power Saving
NCP5230	ONSEMI	获取价格	Precise Low Voltage Synchronous Buck
NCP5230MNTWG	ONSEMI	获取价格	Precise Low Voltage Synchronous Buck
NCP5252	ONSEMI	获取价格	2.0 A, 1.0 MHz Integrated Synchronous Buck Regulator with Light Load Efficiency
NCP5252MNTXG	ONSEMI	获取价格	2.0 A, 1.0 MHz Integrated Synchronous Buck Regulator with Light Load Efficiency
NCP5269	ONSEMI	获取价格	Synchronous Buck Controller with Auto Power Controller with Auto Power Inputs for System A
NCP5269A	ONSEMI	获取价格	Synchronous Buck MOSFET Drivers
NCP5269AMNTWG	ONSEMI	获取价格	Synchronous Buck MOSFET Drivers
NCP5269MNTWG	ONSEMI	获取价格	System Agent Controller with 2-bit VID
NCP5304	ONSEMI	获取价格	High Voltage, High and Low Side Driver

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