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MP4473

更新时间： 2024-02-13 03:03:13
品牌 Logo 应用领域
芯源 - MPS /
页数 文件大小 规格书
21页 752K
描述
High-Efficiency, Fast-Transient, 3.5A, 36V Synchronous, Step-Down Converter

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MP4473 数据手册

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MP4473  
High-Efficiency, Fast-Transient, 3.5A, 36V  
Synchronous, Step-Down Converter  
The Future of Analog IC Technology  
DESCRIPTION  
FEATURES  
The MP4473 is a fully integrated, high-  
frequency, synchronous, rectified, step-down,  
switch-mode converter. It offers a compact  
solution to achieve a 3.5A, continuous-output  
current over a wide input-supply range with  
excellent load and line regulation. It provides  
fast, transient response and good stability for  
wide input-supply and load range. The MP4473  
operates at high efficiency over a wide-output-  
current load range.  
•
•
Wide 4.5V-to-36V Operating Input Range  
Guaranteed 3.5A, Continuous Output  
Current  
Internal 40mΩ High-Side, 20mΩ Low-Side  
Power MOSFETs  
Proprietary Switching-Loss-Reduction  
Technology  
1% Reference Voltage  
•
•
•
•
•
•
•
•
•
Programmable Soft-Start Time  
Low Drop-Out Mode  
MP4473 has full protection features including,  
short-circuit protection (SCP), over-current  
protection (OCP), under-voltage protection  
(UVP), and thermal shutdown (TSD).  
200kHz-to-1MHz Switching Frequency  
SCP, OCP, UVP, and Thermal Shutdown  
Output Adjustable from 0.8V to 0.9×VIN  
Available in a 3mmx4mm, 20-pin, QFN  
Package  
The MP4473 requires minimal, readily available,  
standard, external components, and is available  
in a compact 3mmx4mm, 20-pin, QFN package.  
APPLICATIONS  
•
•
•
•
•
•
Notebook Systems and I/O Power  
Automotive Systems  
Networking Systems  
Industrial Supplies  
Optical Communications 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 Quality Assurance.  
“MPS” and “The Future of Analog IC Technology” are Registered Trademarks  
of Monolithic Power Systems, Inc.  
TYPICAL APPLICATION  
8,19,21,22,23  
100  
90  
7
VIN  
IN  
BST  
C3  
0.1  
C1  
10  
V
OUT 3.3V  
L1  
MP4473  
80  
70  
60  
50  
40  
30  
20  
2
SW  
FREQ  
VCC  
9,10,17,18,24,25  
C4  
R4  
20  
R5  
499k  
R3  
63.4k  
R1  
31.6k  
C5  
1
620k  
390pF  
6
5
PGOOD  
EN  
3
EN  
FB  
SS  
4
PGND  
AGND  
1
11-16  
C6  
33nF  
10  
0
0.01  
0.1  
1
10  
MP4473 Rev. 1.0  
12/15/2014  
www.MonolithicPower.com  
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.  
© 2014 MPS. All Rights Reserved.  
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