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NB6381

更新时间： 2024-11-29 12:47:51
品牌 Logo 应用领域
芯源 - MPS 转换器
页数 文件大小 规格书
19页 747K
描述
High Efficiency, Fast Transient, 8A, 28V Synchronous Step-down Converter in a Tiny QFN20 (3x4mm) Package

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NB6381 数据手册

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NB6381  
High Efficiency, Fast Transient, 8A, 28V  
Synchronous Step-down Converter  
in a Tiny QFN20 (3x4mm) Package  
The Future of Analog IC Technology  
DESCRIPTION  
FEATURES  
The NB6381 is a fully integrated, high  
frequency synchronous rectified step-down  
switch mode converter. It offers a very compact  
solution to achieve 8A continuous output  
current over a wide input supply range with  
excellent load and line regulation. The NB6381  
operates at high efficiency over a wide output  
current load range.  
•
•
•
Wide 4.5V to 28V Operating Input Range  
8A Output Current  
Internal 30mΩ High-Side, 12mΩ Low-Side  
Power MOSFETs  
Proprietary Switching Loss Reduction  
Technique  
1% Reference Voltage  
Programmable Soft Start Time  
Soft Shutdown  
200kHz to 1MHz Switching Frequency  
SCP, OCP, OVP, UVP Protection and  
Thermal Shutdown  
•
•
•
•
•
•
Constant-On-Time  
(COT)  
control  
mode  
provides fast transient response and eases loop  
stabilization.  
Full protection features include SCP, OCP, OVP,  
UVP and thermal shutdown.  
•
•
Output Adjustable from 0.8V to 13V  
Available in a QFN20 (3x4mm) Package  
The NB6381 requires a minimum number of  
readily available standard external components  
and is available in a space-saving QFN20  
(3x4mm) package.  
APPLICATIONS  
•
•
•
•
Notebook Systems and I/O Power  
Networking Systems  
Optical Communication Systems  
Distributed Power and POL Systems  
All MPS parts are lead-free and adhere to the RoHS directive. For MPS green  
status, please visit MPS website under Products, Quality Assurance page.  
. “MPS” and “The Future of Analog IC Technology” are Registered Trademarks  
of Monolithic Power Systems, Inc.  
TYPICAL APPLICATION  
8,19  
7
IN  
BST  
VIN  
R7  
NB6381 SW  
9,10,17,18  
2
FREQ  
VOUT 1.05V  
20  
VCC  
C4  
220pF  
PGOOD  
EN  
3
5
EN  
FB  
AGND PGND  
SS  
4
1
11-16  
CSS  
33nF  
NB6381 Rev. 1.15  
4/18/2012  
www.MonolithicPower.com  
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.  
© 2012 MPS. All Rights Reserved.  
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