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MIC23150-55YMTTR PDF预览

MIC23150-55YMTTR

更新时间： 2024-11-14 13:11:31
品牌 Logo 应用领域
麦瑞 - MICREL 稳压器开关光电二极管
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15页 878K
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MIC23150-55YMTTR 数据手册

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MIC23150  
4MHz PWM 2A Buck Regulator with  
HyperLight Load™  
General Description  
Features  
• Input voltage: 2.7V to 5.5V  
• 2A output current  
• Up to 93% peak efficiency  
• 87% typical efficiency at 1mA  
• 23µA typical quiescent current  
• 4MHz PWM operation in continuous mode  
• Ultra fast transient response  
HyperLight Load™  
The MIC23150 is a high efficiency 4MHz 2A 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 2mm x 2mm Thin MLF®  
package saves precious board space and requires only  
three external components.  
• Low ripple output voltage  
− 14mVpp ripple in HyperLight Load™ mode  
− 5mV output voltage ripple in full PWM mode  
• Fully integrated MOSFET switches  
The MIC23150 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 total solution size, less than 1mm  
height.  
• 0.01µA shutdown current  
• Thermal shutdown and current limit protection  
• Output Voltage as low as 0.95V  
The MIC23150 has a very low quiescent current of 23µA  
and achieves a peak efficiency of 93% in continuous  
conduction mode. In discontinuous conduction mode, the  
MIC23150 can achieve 87% efficiency at 1mA.  
• 8-pin 2mm x 2mm Thin MLF®  
• –40°C to +125°C junction temperature range  
Applications  
• Mobile handsets  
The MIC23150 is available in 8-pin 2mm x 2mm 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  
• Solid State Drives/Memory  
• Wireless LAN cards  
• Portable applications  
____________________________________________________________________________________________________________  
Typical Application  
U1 MIC23150  
Efficiency  
= 1.8V  
V
L1  
OUT  
100  
90  
80  
70  
60  
50  
40  
VIN  
EN  
VOUT  
C2  
V
= 3.0V  
V
= 3.6V  
V
= 2.7V  
IN  
IN  
IN  
VIN  
SW  
C1  
2mm×2mm  
ThinMLF  
SNS  
EN  
AGND  
PGND  
L = 1.0µH  
= 4.7µF  
C
GND  
OUT  
100  
GND  
1
10  
1000 10000  
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  
M9999-102309-B  
October 2009  
1234567...15

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