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MP9473

更新时间： 2024-02-12 17:26:02
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芯源 - MPS /
页数 文件大小 规格书
21页 2623K
描述
High-Efficiency, Fast-Transient, 3.5A, 36V Synchronous, Step-Down Converter

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MP9473 数据手册

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MP9473  
High-Efficiency, Fast-Transient, 3.5A, 36V  
Synchronous, Step-Down Converter  
The Future of Analog IC Technology  
DESCRIPTION  
FEATURES  
The MP9473 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 MP9473  
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  
Technology  
Switching-Loss-Reduction  
1% Reference Voltage  
Programmable Soft-Start Time  
Low Drop-Out Mode  
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  
MP9473 has full protection features including,  
short-circuit protection (SCP), over-current  
protection (OCP), under-voltage protection  
(UVP), and thermal shutdown (TSD).  
The MP9473 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, halogen 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  
0.1μF  
C1  
V
OUT 3.3V  
L1  
10μF  
MP9473  
80  
70  
60  
50  
40  
30  
20  
2
SW  
5.6μH  
FREQ  
VCC  
9,10,17,18,24,25  
3
C4  
R4  
20  
R5  
499kΩ  
R3  
63.4kΩ  
R1  
C2  
2x22μF  
C5  
31.6kΩ  
620kΩ 390pF  
1μF  
6
5
PGOOD  
EN  
EN  
FB  
R2  
10kΩ  
SS  
4
PGND  
AGND  
1
11-16  
C6  
33nF  
10  
0
0.01  
0.1  
1
10  
MP9473 Rev. 1.1  
8/1/2016  
www.MonolithicPower.com  
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.  
© 2016 MPS. All Rights Reserved.  
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