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MIC5203

更新时间： 2024-11-16 22:54:51
品牌 Logo 应用领域
麦瑞 - MICREL 稳压器
页数 文件大小 规格书
7页 84K
描述
レCap⑩ 80mA Low-Dropout Voltage Regulator

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中文翻译

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MIC5203 数据手册

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MIC5203  
µCap™ 80mA Low-Dropout Voltage Regulator  
General Description  
Features  
The MIC5203 is a µCap™ 80mA linear voltage regulator with  
very low dropout voltage (typically 20mV at light loads and  
300mV at 80mA) and very low ground current (225µA at  
20mA output), offering better than 3% initial accuracy with a  
logic-compatible enable input.  
• Tiny 4-lead and 5-lead surface-mount packages  
• Wide Selection of output voltages  
• Guaranteed 80mA output  
• Low quiescent current  
• Low dropout voltage  
• Tight load and line regulation  
• Low temperature coefficient  
• Current and thermal limiting  
• Reversed input polarity protection  
• Zero off-mode current  
The µCap™ regulator design is optimized to work with low-  
value, low-cost ceramic capacitors. The outputs typically  
require only 0.47µF of output capacitance for stability.  
Designedespeciallyforhand-held,battery-powereddevices,  
theMIC5203canbecontrolledbyaCMOSorTTLcompatible  
logicsignal.Whendisabled,powerconsumptiondropsnearly  
to zero. If on-off control is not required, the enable pin may be  
tied to the input for 3-terminal operation. The ground current  
of the MIC5203 increases only slightly in dropout, further  
prolongingbatterylife. KeyMIC5203featuresincludecurrent  
limiting, overtemperature shutdown, and protection against  
reversed battery.  
• Logic-controlled shutdown  
• Stability with low-ESR ceramic capacitors  
3
Applications  
• Cellular telephones  
• Laptop, notebook, and palmtop computers  
• Battery-powered equipment  
• Bar code scanners  
• SMPS post-regulator/dc-to-dc modules  
• High-efficiency linear power supplies  
The MIC5203 is available in 2.8V, 3.0V, 3.3V, 3.6V, 3.8V,  
4.0V, 4.5V, 4.75V, and 5.0V fixed voltages. Other voltages  
are available; contact Micrel for details.  
Typical Applications  
Ordering Information  
Part Number  
Marking Voltage  
Junction Temp. Range  
–40°C to +125°C  
–40°C to +125°C  
–40°C to +125°C  
–40°C to +125°C  
–40°C to +125°C  
–40°C to +125°C  
–40°C to +125°C  
–40°C to +125°C  
–40°C to +125°C  
–40°C to +125°C  
–40°C to +125°C  
–40°C to +125°C  
–40°C to +125°C  
–40°C to +125°C  
–40°C to +125°C  
–40°C to +125°C  
–40°C to +125°C  
Package  
SOT-143  
SOT-143  
SOT-143  
SOT-143  
SOT-143  
SOT-143  
SOT-143  
SOT-143  
SOT-23-5  
SOT-23-5  
SOT-23-5  
SOT-23-5  
SOT-23-5  
SOT-23-5  
SOT-23-5  
SOT-23-5  
SOT-23-5  
Enable  
Shutdown  
MIC5203-3.0BM4  
MIC5203-3.3BM4  
MIC5203-3.6BM4  
MIC5203-3.8BM4  
MIC5203-4.0BM4  
MIC5203-4.5BM4  
MIC5203-4.7BM4  
MIC5203-5.0BM4  
MIC5203-2.8BM5  
MIC5203-3.0BM5  
MIC5203-3.3BM5  
MIC5203-3.6BM5  
MIC5203-3.8BM5  
MIC5203-4.0BM5  
MIC5203-4.5BM5  
MIC5203-4.7BM5  
MIC5203-5.0BM5  
LA30  
LA33  
LA36  
LA38  
LA40  
LA45  
LA47  
LA50  
LA28  
LK30  
LK33  
LK36  
LK38  
LK40  
LK45  
LK47  
LK50  
3.0V  
3.3V  
3.6V  
3.8V  
4.0V  
4.5V  
4.75V  
5.0V  
2.8V  
3.0V  
3.3V  
3.6V  
3.8V  
4.0V  
4.5V  
4.75V  
5.0V  
LAxx  
VOUT  
0.47µF  
SOT-143 Version  
1
2
3
5
4
VOUT  
0.47µF  
Enable  
Shutdown  
SOT-23-5 Version  
Other voltages available. Contact Micrel for details.  
December 1998  
3-141  
1234567

中文翻译

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