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MIC4724YMME PDF预览

MIC4724YMME

更新时间: 2024-09-25 10:56:59
品牌 Logo 应用领域
麦瑞 - MICREL 稳压器开关光电二极管输出元件
页数 文件大小 规格书
19页 663K
描述
3A 2MHz Integrated Switch Buck Regulator with 6Vmax Input

MIC4724YMME 数据手册

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MIC4724  
3A 2MHz Integrated Switch  
Buck Regulator with 6Vmax Input  
General Description  
Features  
The Micrel MIC4724 is a high efficiency PWM buck (step-  
down) regulator that provides up to 3A of output current.  
The MIC4724 operates at 2.0MHz and has proprietary  
internal compensation that allows a closed loop bandwidth  
of over 200KHz.  
3.0 to 6.0V supply voltage  
2.0MHz PWM mode  
Output current to 3A  
Up to 94% efficiency  
100% maximum duty cycle  
The low on-resistance internal p-channel MOSFET of the  
MIC4724 allows efficiencies over 92%, reduces external  
components count and eliminates the need for an  
expensive current sense resistor.  
Adjustable output voltage option down to 1V  
Ultra-fast transient response  
Ultra-small external components  
Stable with a 1µH inductor and a 4.7µF output  
capacitor  
Fully integrated 3A MOSFET switch  
Micropower shutdown  
Thermal shutdown and current limit protection  
Pb-free 10-pin ePAD MSOP package  
–40°C to +125°C junction temperature range  
The MIC4724 operates from 3.0V to 6.0V input and the  
output can be adjusted down to 1V. The devices can  
operate with a maximum duty cycle of 100% for use in low-  
dropout conditions.  
The MIC4724 is available in 10-pin ePAD MSOP package  
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  
FPGA/DSP/ASIC applications  
General point of load  
Broadband communications  
DVD/TV recorders  
Point of sale  
Printers/Scanners  
Set top boxes  
Computing peripherals  
Video cards  
___________________________________________________________________________________________________________  
Typical Application  
3.3V  
Efficiency  
OUT  
96  
94  
92  
90  
88  
86  
84  
82  
80  
78  
76  
4.5V  
IN  
5V  
IN  
5.5V  
IN  
3A 2MHz Buck Regulator  
0
0.5  
1
1.5  
2
2.5  
3
OUTPUT CURRENT (A)  
MLF and MicroLeadFrame are registered trademarks of 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  
M9999-062408-A  
June 2008  

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