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MP2125

更新时间： 2024-11-14 12:36:47
品牌 Logo 应用领域
芯源 - MPS 转换器
页数 文件大小 规格书
10页 295K
描述
Dual 1.5A, 1.2MHz Synchronous Step-Down Converter

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MP2125 数据手册

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MP2125  
Dual 1.5A, 1.2MHz  
Synchronous Step-Down Converter  
The Future of Analog IC Technology  
DESCRIPTION  
FEATURES  
•
•
•
•
•
2.7V-6V Input Operation Range  
Each Output Adjustable from 0.8V to VIN  
1uA Shutdown Current  
Up to 92% Efficiency  
100% Duty Cycle for Low Dropout  
Applications  
The MP2125 is a fully integrated dual PWM  
step-down converter with built-in internal power  
MOSFETs. It is ideal for powering portable  
equipment that runs from a single cell Lithium-  
Ion (Li+) Battery, with an input range from 2.7V  
to 6V. The MP2125 can provide up to 1.5A of  
load current with output voltage as low as 0.8V  
for each output. It can also operate at 100%  
duty cycle for low dropout applications.  
•
•
Fixed 1.2MHz Frequency  
Stable with Low ESR Output Ceramic  
Capacitors  
•
•
•
•
Cycle-by-Cycle Over Current Protection  
Thermal Shutdown  
Short Circuit Protection  
Available in 14-pin 3mmx4mm QFN  
package  
With peak current mode control and internal  
compensation, the MP2125 is stable with  
ceramic capacitors and small inductors.  
Fault condition protection includes cycle-by-  
cycle current limiting and thermal shutdown.  
APPLICATIONS  
MP2125 is available in the small 14-pin  
3mmx4mm QFN package.  
•
•
•
•
•
•
Solid State Disk  
DVD+/-RW Drivers  
Smart Phones  
PDAs  
Digital Cameras  
Portable Instruments  
“MPS” and “The Future of Analog IC Technology” are Registered Trademarks of  
Monolithic Power Systems, Inc.  
TYPICAL APPLICATION  
Efficiency Curve  
Vin1  
2.7V-6V  
100  
EN1  
12  
13  
2
14  
3
PVIN1  
VIN1  
GND1  
N/C  
EN1  
90  
80  
70  
60  
50  
40  
30  
20  
10  
0
Vout1  
1.8V/1.5A  
L1  
SW1  
R1  
R2  
C1  
1
Vin=6V  
C3  
FB1  
N/C  
Vin=3V  
Rt  
Vin=5V  
MP2125  
11  
7
4
Vin2  
2.7V-6V  
EN2  
5
PVIN2  
VIN2  
EN2  
SW2  
Vout2  
1.8V/1.5A  
L2  
6
10  
8
R3  
R4  
C2  
9
C4  
GND2  
FB2  
Rt  
0
0.3  
0.6  
0.9  
1.2  
1.5  
OUTPUT CURRENT (A)  
MP2125 Rev. 1.0  
12/24/2013  
www.MonolithicPower.com  
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.  
© 2013 MPS. All Rights Reserved.  
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