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MIC23050-4YML

更新时间： 2024-11-14 04:39:59
品牌 Logo 应用领域
麦瑞 - MICREL 稳压器
页数 文件大小 规格书
13页 460K
描述
4MHz PWM Buck Regulator with HYPER LIGHT LOAD⑩

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MIC23050-4YML 数据手册

 浏览型号MIC23050-4YML的Datasheet PDF文件第2页浏览型号MIC23050-4YML的Datasheet PDF文件第3页浏览型号MIC23050-4YML的Datasheet PDF文件第4页浏览型号MIC23050-4YML的Datasheet PDF文件第5页浏览型号MIC23050-4YML的Datasheet PDF文件第6页浏览型号MIC23050-4YML的Datasheet PDF文件第7页 
MIC23050  
4MHz PWM Buck Regulator  
with HYPER LIGHT LOAD™  
General Description  
Features  
The Micrel MIC23050 is a high efficiency 500mA PWM  
synchronous buck (step-down) regulator featuring Hyper  
Light Load™, a patented switching scheme that offers  
best-in-class light load efficiency and transient  
performance while providing very small external  
components and low output ripple at all loads.  
• Input voltage range: 2.7V to 5.5V  
• Fixed output voltage options from 0.72V to 2.5V  
• Output current guaranteed up to 500mA  
• Ultra fast transient response  
• 20µA typical quiescent current  
• 4MHz in PWM in constant current mode  
• Hyper light load mode  
The MIC23050 also has a very low typical quiescent  
current draw of 20µA and can achieve over 85% efficiency  
even at 1mA. The device allows operation with a tiny  
inductor ranging from 0.47µH to 2.2µH and uses a small  
output capacitor that enables a sub-1mm height.  
• 0.47µH to 2.2µH inductor  
• Low voltage output ripple  
–
–
25mVpp in hyper light load mode  
3mV output voltage ripple in full PWM mode  
In contrast to traditional light load schemes Hyper Light  
Load™ architecture does not need to trade off control  
speed to obtain low standby currents and in doing so the  
device only needs a small output capacitor to absorb the  
load transient as the powered device goes from light load  
to full load.  
• >93% efficiency  
• ~85% at 1mA  
• Fully integrated MOSFET switches  
• Micropower shutdown  
• Thermal shutdown and current limit protection  
• 8-pin 2mm x 2mm MLF®  
At higher loads the MIC23050 provides a constant  
switching frequency of greater than 4MHz while providing  
peak efficiencies greater than 93%.  
• –40°C to +125°C junction temperature range  
The MIC23050 comes in fixed output voltage options from  
0.72V to 2.5V eliminating external feedback components.  
The MIC23050 is available in an 8-pin 2mm x 2mm MLF®  
with a junction operating range from –40°C to +125°C.  
Data sheets and support documentation can be found on  
Micrel’s web site at: www.micrel.com.  
Applications  
• Cellular phones  
• Digital cameras  
• Portable media players  
• Wireless LAN cards  
• WiFi/WiMax/WiBro modules  
• USB Powered Devices  
___________________________________________________________________________________________________________  
Typical Application  
Efficiency V  
= 1.8V  
OUT  
100  
80  
60  
40  
20  
0
V
= 2.7V  
IN  
V
= 3.6V  
IN  
V
= 3.3V  
IN  
V
= 1.8V  
OUT  
L = 1µH  
1
10  
100  
1000  
LOAD (mA)  
Hyper Light Load is a trademark of Micrel, Inc.  
MLF and MicroLeadFrame are registered trademarks of Amkor Technology, Inc.  
Protected by US Patent No. 7064531  
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com  
M9999-072007-B  
July 2007  
1
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MIC23050-4YML 替代型号

型号 品牌 替代类型 描述 数据表
MIC23050-4YMLTR MICREL

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