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MIC23030-CYMT

更新时间： 2024-11-14 10:57:19
品牌 Logo 应用领域
麦瑞 - MICREL 稳压器开关光电二极管
页数 文件大小 规格书
17页 690K
描述
8MHz PWM 400mA Buck Regulator with HyperLight Load

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MIC23030-CYMT 数据手册

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MIC23030  
8MHz PWM 400mA Buck Regulator with  
HyperLight Load™  
General Description  
Features  
• Input voltage: 2.7V to 5.5V  
• 400mA output current  
• Up to 91% efficiency and 83% at 1mA  
• 21µA typical quiescent current  
• 8MHz PWM operation in continuous mode  
• Ultra fast transient response  
HyperLight Load™  
The MIC23030 is a high efficiency 8MHz 400mA  
synchronous buck regulator with HyperLight Load™ mode.  
HyperLight Load™ provides very high efficiency at light  
loads and ultra-fast transient response which is perfectly  
suited for supplying processor core voltages.  
An  
additional benefit of this proprietary architecture is very low  
output ripple voltage throughout the entire load range with  
the use of small output capacitors. The tiny 1.6mm x  
1.6mm Thin MLF® package saves precious board space  
and requires only three external components.  
• Low voltage output ripple  
− 14mVpp ripple in HyperLight Load™ mode  
− 5mV output voltage ripple in full PWM mode  
• Fully integrated MOSFET switches  
The MIC23030 is designed for use with a very small  
inductor, down to 0.47µH, and an output capacitor as small  
as 2.2 µF that enables a sub-1mm height.  
• 0.01µA shutdown current  
• Thermal shutdown and current limit protection  
• Fixed and adjustable output voltage options available  
• 6-pin 1.6mm x 1.6mm Thin MLF®  
The MIC23030 has a very low quiescent current of 21µA  
and achieves as high as 83% efficiency at 1mA. At higher  
loads, the MIC23030 provides a constant switching  
frequency around 8MHz while achieving peak efficiencies  
up to 91%.  
• –40°C to +125°C junction temperature range  
Applications  
• Mobile handsets  
The MIC23030 is available in a 6-pin 1.6mm x 1.6mm Thin  
MLF® package with an operating junction temperature  
range from –40°C to +125°C.  
Datasheets and support documentation can be found on  
Micrel’s web site at: www.micrel.com.  
• Portable media/MP3 players  
• Portable navigation devices (GPS)  
• WiFi/WiMax/WiBro modules  
• Digital Cameras  
• Wireless LAN cards  
• USB powered devices  
• Portable applications  
____________________________________________________________________________________________________________  
Typical Application  
Efficiency VOUT = 2.5V  
100  
90  
U1 MIC23030  
VIN  
VIN = 3.0V  
2.7V to 5.5V  
VOUT  
1
4
2
3
SW  
VIN  
EN  
L1  
C1  
VIN = 3.6V  
80  
EN  
C2  
SNS  
70 VIN = 4.2V  
AGND  
PGND  
L = 0.47µH  
60  
50  
5
6
COUT = 4.7µF  
GND  
GND  
1
10  
100  
1000  
OUTPUT CURRENT (mA)  
HyperLight Load is a trademark of Micrel, Inc.  
MLF and MicroLeadFrame are registered trademark Amkor Technology Inc.  
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com  
M9999-082608-B  
August 2008  
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