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MP2149GJ PDF预览

MP2149GJ

更新时间: 2024-11-15 01:16:07
品牌 Logo 应用领域
芯源 - MPS /
页数 文件大小 规格书
13页 451K
描述
6V, 1A, Low Quiescent Current Dual, SYNC Buck Regulator

MP2149GJ 数据手册

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MP2149  
6V, 1A, Low Quiescent Current  
Dual, SYNC Buck Regulator  
The Future of Analog IC Technology  
DESCRIPTION  
FEATURES  
The MP2149 is an internally-compensated,  
1MHz fixed-frequency, dual PWM, synchronous,  
step-down regulator. The MP2149 operates  
from a 2.7V-to-6V input, generates an output  
voltage as low as 0.608V, and has a 45µA  
quiescent current that makes it ideal for  
powering portable equipment that runs on a  
single cell lithium-ion (Li+) battery.  
Dual 1A-Output Current  
>93% Peak Efficiency  
>80% Light-Load Efficiency  
Wide 2.7V-to-6V Operating Input Range  
100mand 40mInternal Power MOSFET  
1MHz Fixed Switching Frequency  
Adjustable Output from 0.608V to VIN  
180° Phase-Shifted Operation  
100% Duty-Cycle Operation  
The MP2149 integrates dual 100mhigh-side  
switches and 40msynchronous rectifiers for  
high efficiency without an external Schottky  
diode. Peak-current mode control and internal  
compensation limits the minimum number of  
readily-available external components.  
45µA Quiescent Current  
Cycle-by-Cycle Over-Current Protection  
Short-Circuit Protection with Hiccup Mode  
Thermal Shutdown  
Available in an 8-pin TSOT23-8 Package  
Fault-condition protections include cycle-by-cycle  
current limiting and thermal shutdown.  
APPLICATIONS  
Small/Handhold Devices  
DVD Drivers  
Portable Instruments  
Smartphones and Feature Phones  
Battery-Powered Devices  
The MP2149 is available in an 8-pin TSOT23-8  
package.  
All MPS parts are lead-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  
VIN  
5V  
100  
90  
C
22µF  
IN  
IN  
80  
EN1  
EN2  
EN1  
EN2  
L2  
L1  
1.5uH  
70  
VOUT1  
1.8V  
1.5uH  
VOUT2  
1.2V  
SW1  
SW2  
60  
MP2149  
GND  
COUT 2  
22µF  
COUT1  
22µF  
R1  
806kO  
R3  
806kO  
50  
FB1  
FB2  
40  
30  
R2  
412kO  
R4  
825kO  
0.01  
0.1  
1
MP2149 Rev.1.01  
5/31/2013  
www.MonolithicPower.com  
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.  
© 2013 MPS. All Rights Reserved.  
1

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