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MP28256 PDF预览

MP28256

更新时间: 2024-01-21 23:10:03
品牌 Logo 应用领域
芯源 - MPS /
页数 文件大小 规格书
13页 360K
描述
21V, 3A 500kHz Synchronous Step-Down Coverter

MP28256 技术参数

是否Rohs认证: 符合生命周期:Not Recommended
包装说明:HVSON,Reach Compliance Code:compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.72其他特性:OUTPUT VOLTAGE FROM 0.6V TO 18V
模拟集成电路 - 其他类型:SWITCHING REGULATOR控制模式:CURRENT-MODE
控制技术:PULSE WIDTH MODULATION最大输入电压:21 V
最小输入电压:4.5 V标称输入电压:12 V
JESD-30 代码:R-PDSO-N14JESD-609代码:e3
长度:4 mm湿度敏感等级:1
功能数量:1端子数量:14
最高工作温度:85 °C最低工作温度:-20 °C
封装主体材料:PLASTIC/EPOXY封装代码:HVSON
封装形状:RECTANGULAR封装形式:SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE
峰值回流温度(摄氏度):260座面最大高度:1 mm
表面贴装:YES切换器配置:BUCK
最大切换频率:500 kHz温度等级:OTHER
端子面层:Matte Tin (Sn)端子形式:NO LEAD
端子节距:0.5 mm端子位置:DUAL
处于峰值回流温度下的最长时间:40宽度:3 mm
Base Number Matches:1

MP28256 数据手册

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MP28256  
21V, 3A 500kHz Synchronous  
Step-Down Coverter  
The Future of Analog IC Technology  
DESCRIPTION  
FEATURES  
The MP28256 is a synchronous rectified step-  
down switch mode converter with built in  
internal power MOSFETs. It offers a very  
compact solution to achieve 3A continuous  
output current over a wide input supply range  
with excellent load and line regulation. The  
MP28256 has synchronous mode operation for  
higher efficiency over output current load range.  
Wide 4.5V to 21V Operating Input Range  
0.6V internal reference with 2% accuracy  
3A Output Current  
Low Rds(ON) Internal Power MOSFETs  
Fixed 500kHz Switching Frequency  
Frequency SYNC from 300kHz to 2MHz  
External Clock  
External Soft Start  
Current mode operation provides fast transient  
response and eases loop stabilization. Full  
protection features include OCP and thermal  
shut down.  
OCP and Thermal Shutdown  
Separate EN and SYNC pins  
Available in a QFN14 (3x4mm) Package.  
APPLICATIONS  
The MP28256 requires a minimum number of  
readily available standard external components  
and is available in a space saving QFN14  
(3x4mm) package.  
DSL Modems  
Cable Modems  
Set Top Boxes  
For MPS green status, please visit MPS website under Quality Assurance.  
“MPS” and “The Future of Analog IC Technology” are Registered Trademarks of  
Monolithic Power Systems, Inc.  
TYPICAL APPLICATION  
Efficiency vs. Load Current  
VOUT=1.2V  
100  
90  
80  
70  
60  
50  
40  
30  
20  
10  
0
VIN=4.5V  
VIN=12V  
VIN=21V  
0
0.5  
1
1.5  
2
2.5  
3
3.5  
LOAD CURRENT (A)  
MP28256 Rev. 1.0  
11/3/2011  
www.MonolithicPower.com  
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.  
© 2011 MPS. All Rights Reserved.  
1

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