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MP2144 参数 Datasheet PDF下载

MP2144图片预览
型号: MP2144
PDF下载: 下载PDF文件 查看货源
内容描述: 2A , 5.5V , 1.2MHz的, 40A的智商, COT同步降压切换器 [2A, 5.5V, 1.2MHz, 40A IQ, COT Synchronous Step Down Switcher]
分类和应用:
文件页数/大小: 14 页 / 363 K
品牌: MPS [ MONOLITHIC POWER SYSTEMS ]
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MP2144 – 2A, 5.5V, 1.2MHz. 40μA IQ, SYNCHRONOUS STEP-DOWN SWITCHER  
ELECTRICAL CHARACTERISTICS (5)  
VIN = 5V, TA = 25°C, unless otherwise noted.  
Parameter  
Symbol Condition  
Min  
-1.5%  
-2%  
Typ  
Max Units  
2.5V VIN 5.5V  
TA=-40oC to +85oC  
VFB = 0.63V  
0.600 +1.5%  
Feedback Voltage  
VFB  
V/%  
+2%  
Feedback Current  
IFB  
10  
90  
60  
nA  
mΩ  
mΩ  
PFET Switch ON Resistance  
NFET Switch ON Resistance  
RDSON_P  
RDSON_N  
V
EN = 0V, VIN = 5V  
Switch Leakage  
0.1  
2
μA  
VSW = 0V and 5V  
PFET Current Limit  
3.3  
3.8  
100  
200  
277  
A
NFET Switch Sinking Current  
INSW  
tON  
VOUT=1.2V, VFB=0.7V  
VIN=5V, VOUT=1.2V  
μA  
ON Time  
nS  
VIN=3.6V, VOUT=1.2V  
VIN=5V, VOUT=1.2V, IOUT=1A  
TA=-40oC to +85oC  
-20%  
-25%  
1200 +20% kHz  
1200 +25% kHz  
Switching frequency  
fs  
Minimum OFF Time  
Soft-Start Time  
tMIN-OFF  
tSS-ON  
50  
1.3  
1
ns  
ms  
ms  
Soft-Stop Time  
tSS-OFF  
Power-Good Upper Trip  
Threshold  
FB voltage with respect to  
the regulation  
PGH  
+10%  
%
Power-Good Lower Trip  
Threshold  
PGL  
PGD  
VPG-L  
VPG-H  
RPG  
-10%  
110  
%
μs  
V
Power-Good Delay  
Power-Good Sink Current  
Capability  
Sink 1mA  
0.4  
Power Good Logic High Voltage  
VIN=5V, VFB=0.6V  
4.9  
2.0  
V
Power Good Internal Pull-Up  
Resistor  
500  
2.2  
kΩ  
Under-Voltage Lockout Threshold  
Rising  
2.4  
0.4  
V
Under-Voltage Lockout Threshold  
Hysteresis  
150  
mV  
EN Input Logic Low Voltage  
EN Input Logic High Voltage  
V
1.2  
V
VEN=2V  
VEN=0V  
VEN=0V  
2
μA  
μA  
μA  
EN Input Current  
0.1  
0.1  
Supply Current (Shutdown)  
Supply Current (Quiescent)  
VEN=2V, VFB=0.63V,  
VIN=3.6V  
40  
μA  
Thermal Shutdown  
Thermal Hysteresis  
150  
30  
°C  
°C  
Notes:  
5) Guaranteed by design.  
MP2144 Rev. 1.03  
12/20/2012  
www.MonolithicPower.com  
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.  
© 2012 MPS. All Rights Reserved.  
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