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MP28119EG-1.0 PDF预览

MP28119EG-1.0

更新时间： 2024-09-23 01:07:43
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芯源 - MPS /
页数 文件大小 规格书
12页 287K
描述
Ultra-small 1.7MHz, 600mA, Low-Voltage Synchronous Step-Down Converter

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MP28119EG-1.0 数据手册

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MP28119  
Ultra-small  
1.7MHz, 600mA, Low-Voltage  
Synchronous Step-Down Converter  
The Future of Analog IC Technology  
DESCRIPTION  
FEATURES  
The MP28119 is a 1.7MHz constant frequency,  
current mode, ultra-small PWM step-down  
converter. The device integrates a main switch  
and a synchronous rectifier for high efficiency  
and eliminates the needs for an external  
schottky diode. It is ideal for powering portable  
equipment that runs from a single cell Lithium-  
Ion (Li+) battery. The MP28119 can supply  
600mA of load current from a 2.5V to 6V input  
voltage.  
High Efficiency: Up to 89%  
1.7MHz Constant Switching Frequency  
600mA Available Load Current  
2.5V to 6V Input Voltage Range  
100% Duty Cycle in Dropout  
Current Mode Control  
Short Circuit Protection  
Thermal Fault Protection  
Output Discharge Function  
<0.1μA Shutdown Current  
1.0V and 1.2V Fixed Out-put Versions  
Ultra-Small 2x2 QFN Package  
The output voltages of the MP28119EG-1.0 and  
MP28119EG-1.2 are fixed at 1.0V and 1.2V  
respectively.  
The MP28119 can also run at 100% duty cycle  
for low dropout applications.  
The MP28119 has an output discharge function  
that controls the discharging of the output  
capacitor.  
APPLICATIONS  
Cellular and Smart Phones  
Microprocessors and DSP Core Supplies  
PDAs  
MP3 Players  
Digital Still and Video Cameras  
Portable Instruments  
The MP28119 is available in an ultra-small 2x2  
QFN package.  
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  
Efficiency vs. Load Current  
VOUT=1V, L=2.2uH  
100  
7
4
1
5
OUTPUT  
Vin=3.3V  
IN  
SW  
90  
80  
70  
60  
50  
40  
30  
20  
10  
0
MP28119EG-1.0  
EN  
OUT  
OFF ON  
Vin=5V  
GND  
6,8  
10  
100  
LOAD CURRENT(mA)  
1000  
MP28119 Rev.0.91  
11/23/2011  
www.MonolithicPower.com  
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.  
© 2011 MPS. All Rights Reserved.  
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