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MP4566

更新时间： 2024-02-17 19:09:11
品牌 Logo 应用领域
芯源 - MPS 转换器
页数 文件大小 规格书
14页 358K
描述
36V, 1MHz, 0.6A Step-Down Converter With 35μA Quiescent Current

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MP4566 数据手册

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MP4566  
36V, 1MHz, 0.6A  
Step-Down Converter  
With 35μA Quiescent Current  
The Future of Analog IC Technology  
DESCRIPTION  
FEATURES  
The MP4566 is a high frequency (1MHz) step-  
down switching regulator with integrated  
internal high-side high voltage power MOSFET.  
It provides single 0.6A (or less) highly efficient  
output with current mode control for fast loop  
response.  
•
•
•
•
•
•
•
•
•
35μA Quiescent Current  
Low Shutdown Mode Current: <2μA  
Wide 4.5V to 36V Operating Input Range  
450mΩ Internal Power MOSFET  
Fixed 1MHz Switching Frequency  
Internally compensated  
Stable with Ceramic Output Capacitors  
Internal Soft-Start  
Precision Current Limit Without Current  
Sensing Resistor  
High Light Load Efficiency up to 77% at  
1mA  
+1.0V FB Reference Voltage  
Output Adjustable from +1.0V to 0.8xVIN  
2mmx3mm QFN8 Package  
The wide 4.5V to 36V input range  
accommodates  
a
variety of step-down  
applications in automotive input environment.  
The very low shutdown mode quiescent current  
allows use in battery-powered applications.  
•
High power conversion efficiency over a wide  
load range is achieved by scaling down the  
switching frequency at light load condition to  
reduce the switching and gate driving losses.  
•
•
•
Frequency fold-back helps prevent inductor  
current runaway during start-up. Thermal  
shutdown provides reliable, fault-tolerant  
operation.  
APPLICATIONS  
•
•
•
•
•
•
Adapter-Based/Handheld Applications  
Notebook/Netbook PCs  
Automotive Systems  
Industrial Power Systems  
Distributed Power Systems  
Battery Powered Systems  
The MP4566 is available in a 2mmx3mm QFN8  
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  
C3  
V
=3.3V  
OUT  
L1  
VOUT  
3.3V/0.6A  
2
100  
90  
80  
70  
60  
50  
40  
30  
20  
3
BST  
VIN  
SW  
4
5
VIN  
4.5V to 36V  
C2  
D1  
R2  
C1  
MP4566  
BIAS  
R3  
R1  
V
=6V  
IN  
1
7
V
=12V  
IN  
C4  
OFF ON  
EN  
V
=24V  
IN  
FB  
GND  
6
V
=36V  
IN  
C5  
39pF  
0.0001 0.001  
0.01  
0.1  
1
LOAD CURRENT (A)  
MP4566 Rev. 1.01  
9/22/2011  
ww.MonolithicPower.com  
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.  
© 2011 MPS. All Rights Reserved.  
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