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MIC23031

更新时间： 2024-11-15 14:55:47
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美国微芯 - MICROCHIP /
页数 文件大小 规格书
26页 3602K
描述
The MIC23031 is a high efficiency 4MHz 400mA synchronous buck regulator with HyperLight Load? mo

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MIC23031 数据手册

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MIC23031  
®
4 MHz PWM 400 mA Buck Regulator with HyperLight Load  
Features  
General Description  
• Input Voltage: 2.7V to 5.5V  
The MIC23031 is a high-efficiency, 4 MHz, 400 mA  
synchronous buck regulator with HyperLight Load®  
mode. HyperLight Load provides very high efficiency at  
light loads and ultra-fast transient response that is  
perfectly suited for supplying processor core voltages.  
An additional benefit of this proprietary architecture is  
the very low output ripple voltage throughout the entire  
load range with the use of small output capacitors. The  
tiny 1.6 mm x 1.6 mm TDFN package saves precious  
board space and requires only three external  
components.  
• 400 mA Output Current  
• Up to 93% Efficiency and 88% at 1 mA  
• 21 µA Typical Quiescent Current  
• 4 MHz PWM Operation in Continuous Mode  
• Ultra-Fast Transient Response  
• Low Voltage Output Ripple  
- 20 mVPP Ripple in HyperLight Load® Mode  
- 3 mV Output Voltage Ripple in Full PWM  
Mode  
The MIC23031 is designed for use with a very small  
inductor, down to 0.47 µH, and an output capacitor as  
small as 2.2 µF that enables a sub 1 mm height.  
• 0.01 µA Shutdown Current  
• MIC23031 Fixed and Adjustable Output Voltage  
Options Available  
The MIC23031 has a very low quiescent current of  
21 µA and achieves as high as 88% efficiency at 1 mA.  
At higher loads, the MIC23031 provides a constant  
switching frequency around 4 MHz while achieving  
peak efficiencies up to 93%.  
• 1.6 mm x 1.6 mm 6-Lead TDFN Package  
• –40°C to +125°C Junction Temperature Range  
Applications  
• Mobile Handsets  
The MIC23031 is available in a 6-pin 1.6 mm x 1.6 mm  
TDFN package with an operating junction temperature  
range of –40°C to +125°C.  
• Portable Media/MP3 Players  
• Portable Navigation Devices (GPS)  
• WiFi/WiMax/WiBro Modules  
• Digital Cameras  
• Wireless LAN Cards  
• USB-Powered Devices  
• Portable Applications  
Typical Application Circuit  
Efficiency VOUT = 2.5V  
2021 Microchip Technology Inc.  
DS20006538A-page 1  
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