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MP8125

更新时间： 2024-11-22 02:56:39
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芯源 - MPS /
页数 文件大小 规格书
13页 341K
描述
550mA, 8-14V Input, LNB Power Supply and Control Voltage Regulator

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MP8125 数据手册

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MP8125  
550mA, 8-14V Input, LNB Power Supply  
and Control Voltage Regulator  
The Future of Analog IC Technology  
DESCRIPTION  
FEATURES  
The MP8125 is a voltage regulator designed to  
provide efficient, low noise power to the  
Satellite receiver’s RF LNB (Low Noise Block)  
converter via coaxial cable through a DiSEqC  
1.x compatible link that receives instructions  
from a dedicated controller.  
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DiSEqC 1.x Compatibility  
Up to 550mA Output Current  
8V to 14V Input Voltage  
Boost Converter with Internal Switch  
Low Noise LDO Output  
Built-in 22kHz Tone Signal Generator  
Programmable Current Limit  
1V Line Drop Compensation  
Adjustable Soft-start Time  
POK Indicator  
The MP8125 integrates a current mode boost  
regulator followed by a tracking linear regulator.  
The boost regulator provides a clean and quiet  
power source that will not contaminate the low  
noise RF signal down converted to the receiver.  
The tracking linear regulator protects the output  
against overload or short.  
Short Circuit Protection  
Over Temperature Protection  
TSSOP16 Exposed Pad and 24-pin QFN (4  
x 4mm) Packages  
The MP8125 provides a number of features  
described in the European EUTELSAT  
specification (DiSEqC) including: voltage  
selection of horizontal or vertical polarization  
directions of LNB and a selectable VOUT  
compensation for voltage drop on the long  
coaxial cable. In accordance with DiSEqC  
standard, a tone signal of 22kHz is generated  
by an internal oscillator and can be activated or  
deactivated onto output by EXTM pin.  
APPLICATIONS  
•
LNB Power Supply and Control for Satellite  
Set Top Boxes  
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.  
The MP8125 is available in thermally enhanced  
TSSOP16 and 24-pin QFN (4 x 4mm) packages.  
TYPICAL APPLICATION  
MP8125 Rev. 1.11  
5/9/2013  
www.MonolithicPower.com  
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.  
© 2013 MPS. All Rights Reserved.  
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