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MIC2937A-5.0WU-TR PDF预览

MIC2937A-5.0WU-TR

更新时间： 2024-11-23 06:16:03
品牌 Logo 应用领域
美国微芯 - MICROCHIP /
页数 文件大小 规格书
12页 252K
描述
5V FIXED POSITIVE LDO REGULATOR, 0.75V DROPOUT, PSSO3

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中文翻译

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MIC2937A-5.0WU-TR 数据手册

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MIC2937A/29371/29372  
750mA Low-Dropout Voltage Regulator  
General Description  
Features  
•
•
•
•
•
•
•
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High output voltage accuracy  
The MIC2937Afamily are “bulletproof” efficient voltage regu-  
lators with very low dropout voltage (typically 40mV at light  
loads and 300mV at 500mA), and very low quiescent current  
(160µA typical). The quiescent current of the MIC2937A in-  
creases only slightly in dropout, thus prolonging battery life.  
Key MIC2937A features include protection against reversed  
battery,fold-backcurrentlimiting,andautomotive“loaddump”  
protection (60V positive transient).  
Guaranteed 750mA output  
Low quiescent current  
Low dropout voltage  
Extremely tight load and line regulation  
Very low temperature coefficient  
Current and thermal limiting  
Input can withstand –20V reverse battery and +60V posi-  
tive transients  
The MIC2937 is available in several configurations. The  
MIC2937A-xx devices are three pin fixed voltage regulators  
with 3.3V, 5V, and 12V outputs available. The MIC29371 is  
a fixed regulator offering logic compatible ON/OFF switching  
input and an error flag output. This flag may also be used as  
a power-on reset signal. A logic-compatible shutdown input  
is provided on the adjustable MIC29372, which enables the  
regulator to be switched on and off.  
•
•
•
•
Error flag warns of output dropout  
Logic-controlled electronic shutdown  
Output programmable from 1.24V to 26V(MIC29372)  
Available in TO-220, TO-263, TO-220-5, and TO-263-5  
packages.  
Applications  
•
•
•
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•
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•
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Battery Powered Equipment  
Cellular Telephones  
Laptop, Notebook, and Palmtop Computers  
PCMCIA VCC and VPP Regulation/Switching  
Bar Code Scanners  
Automotive Electronics  
SMPS Post-Regulator/ DC to DC Modules  
High Efficiency Linear Power Supplies  
Pin Configuration  
1
2 3 4 5  
1 2 3  
INPUT GROUND OUTPUT  
TO-263-5 Package  
TO-263 Package  
(MIC29371/29372BU/WU)  
(MIC2937A-xxBU/WU)  
Five Lead Package Pin Functions:  
MIC29371 MIC29372  
1
2 3 4 5  
1 2 3  
1) Error  
Adjust  
INPUT GROUND OUTPUT  
2) Input  
3) Ground  
4) Output  
Shutdown  
Ground  
Input  
TO-220 Package  
(MIC2937A-xxBT/WT)  
TO-220-5 Package  
(MIC29371/29372BT/WT)  
5) Shutdown Output  
The TAB is Ground on the TO-220 and TO-263 packages.  
Micrel, Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com  
May 2006  
1
MIC2937A/29371/29372  
1234567...12

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