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MP2115DQ

更新时间： 2024-11-14 12:06:07
品牌 Logo 应用领域
芯源 - MPS 转换器
页数 文件大小 规格书
11页 461K
描述
2A Synchronous Step-Down Converter with Programmable Input Current Limit

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MP2115DQ 数据手册

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MP2115  
2A Synchronous Step-Down Converter  
with Programmable Input Current Limit  
The Future of Analog IC Technology  
DESCRIPTION  
FEATURES  
The MP2115 is a high frequency, current mode,  
PWM step-down converter with integrated input  
current limit switch. The step-down converter  
integrates a main switch and a synchronous  
rectifier for high efficiency without an external  
Schottky diode. The input average current limit  
can be externally programmed. It is ideal for  
powering portable equipment that is powered  
by an USB port. The MP2115 can supply 2A of  
load current from a 2.8V to 6V input voltage.  
The output voltage can be regulated as low as  
0.6V.  
•
•
High Efficiency: Up to 92%  
Programmable Switching Frequency from  
0.7MHz-2MHz  
Programmable Input Current Limit  
2A Available Load Current  
2.8V to 6V Input Voltage Range  
Output Voltage as Low as 0.6V  
Current Mode Control  
Power Good Indicator  
Short Circuit Protection  
Thermal Fault Protection  
<0.1µA Shutdown Current  
Space Saving 3mm x 3mm QFN10 Package  
•
•
•
•
•
•
•
•
•
•
The MP2115 is available in a space-saving  
10-pin QFN package.  
APPLICATIONS  
•
•
•
•
•
•
•
USB Powered Devices  
Cellular and Smart Phones  
Microprocessors and DSP Core Supplies  
PDAs  
MP3 Players  
Digital Still and Video Cameras  
Portable Instruments  
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  
R4  
Efficiency  
USB Input  
VIN  
PG  
V
=3.8V, Freq=1.5MHz  
100k  
OUT  
R3  
100  
90  
EN  
V
=5.0V  
100k  
IN  
U1  
PG  
1
9
7
V
=5.5V  
VIN  
EN  
IN  
3.8V/2A  
C5  
VOUT  
VSYS  
SW  
80  
MP2115DQ  
R1  
51k  
8
4
VSYS  
AGND  
220pF  
3
FB  
70  
R2  
9.53k  
6TPE470MI x 3  
60  
50  
R5  
24.9k  
R6  
86.6k  
0.0 0.1 0.2 0.3 0.4 0.5 0.6  
LOADCURRENT ( A )  
MP2115 Rev. 1.0  
2/28/2011  
www.MonolithicPower.com  
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.  
© 2011 MPS. All Rights Reserved.  
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