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MP2183

更新时间： 2024-11-15 17:01:27
品牌 Logo 应用领域
芯源 - MPS 软启动
页数 文件大小 规格书
18页 1085K
描述
带软启动和电源正常指示功能的 3A 同步降压变换器

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中文翻译

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MP2183 数据手册

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MP2183  
3A, Synchronous Step-Down  
Converter with SS & PG  
DESCRIPTION  
FEATURES  
The MP2183 is a monolithic, step-down, switch-  
mode converter with built-in internal power  
MOSFETs. It achieves 3A continuous output  
current from a 2.5V to 5.5V input voltage with  
excellent load and line regulation. The output  
voltage can be regulated to as low as 0.6V.  
Low IQ: 21μA  
1.2MHz Switching Frequency  
EN for Power Sequencing  
1% FB Accuracy  
Wide 2.5V to 5.5V Operating Input Range  
Output Adjustable from 0.6V  
Up to 3A Output Current  
65mΩ and 35mΩ Internal Power MOSFET  
Switches  
100% Duty On  
Output Discharge  
VO OVP  
External Soft-Start Control  
Short-Circuit Protection with Hiccup Mode  
Power Good  
The constant-on-time control scheme provides  
fast transient response and eases loop  
stabilization. Fault protections include cycle-by-  
cycle current limiting and thermal shutdown.  
The MP2183 is available in an ultra-small  
SOT583 package and requires a minimal  
number of readily available, standard external  
components.  
The MP2183 is ideal for a wide range of  
applications including high-performance DSPs,  
wireless power, portable and mobile devices,  
and other low-power systems.  
Available in a SOT583 Package  
APPLICATIONS  
Wireless/Networking Cards  
Portable Instruments  
Battery-Powered Devices  
Low-Voltage I/O System Power  
Multi-Function Printer  
All MPS parts are lead-free and adhere to the RoHS directive. For MPS green  
status, visit the MPS website under Quality Assurance. “MPS”, the MPS  
logo, and “Simple, Easy Solutions” are registered trademarks of Monolithic  
Power Systems, Inc. or its subsidiaries.  
TYPICAL APPLICATION  
Efficiency vs. Output Current  
L = 1µH (DCR = 27mΩ)  
L1  
1μH  
VIN  
5V  
VOUT  
1.2V/3A  
SW  
100  
VIN  
OUT  
C2  
22μF  
C1  
10μF  
95  
90  
85  
R1  
100kΩ  
MP2183  
GND  
EN  
SS  
FB  
EN  
SS  
R2  
100kΩ  
Vin=2.5V,Vo=1.2V  
80  
PG  
C3  
2.2nF  
Vin=3.6V,Vo=1.2V  
75  
Vin=5V,Vo=1.2V  
70  
0.001  
0.01  
0.1  
1
10  
OUTPUT CURRENT (A)  
MP2183 Rev. 1.0  
5/9/2019  
www.MonolithicPower.com  
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.  
© 2019 MPS. All Rights Reserved.  
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