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MIC5231

更新时间： 2024-11-24 14:54:59
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美国微芯 - MICROCHIP /
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7页 185K
描述
The MIC5231 μCap low-dropout voltage regulator is intended for low-output-current biasing applic

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MIC5231  
Micropower µCap LDO Regulator  
General Description  
Features  
The MIC5231 µCap low dropout voltage regulator is  
intended for low output current biasing applications. It  
features extremely low ground current, not greater than  
4µA under all load and temperature conditions, making it  
efficient and ideal for keep-alive applications in devices  
such as notebook computers.  
• Extremely low quiescent current—only 0.65µA  
• No output capacitor requirement  
• Stable with ceramic or tantalum capacitors  
• IttyBitty® SOT-23-5 surface-mount package  
• 10mA output drive  
• Low 150mV at 10mA dropout voltage  
• Tight load and line regulation  
• Low temperature coefficient  
The MIC5231 offers better than 2% initial accuracy and  
low dropout (typically 150mV at 10mA output current). An  
output capacitor is not required for stable operation,  
decreasing cost and board space. Tiny ceramic chip  
capacitors may be used to improve transient response.  
• Logic-level enable input  
The MIC5231 also features a control pin which allows the  
regulator to be shut down when not required. Its shutdown-  
state draws zero current, benefiting battery-powered appli-  
cations.  
Applications  
• Real-time clocks  
• SRAM backup  
• Cellular telephones  
• Laptop, notebook and palmtop computers  
• Battery-powered equipment  
• Bar code scanners  
The MIC5231 is available in fixed output voltages of 2.75V,  
3.0V, 3.3V and 5V in the small SOT-23-5 IttyBitty®  
package. Contact Micrel for other voltage options.  
Data sheets and support documentation can be found on  
Micrel’s web site at: www.micrel.com.  
• SMPS post-regulator and DC-to-DC modules  
_________________________________________________________________________________________________________  
Typical Application  
MIC5231-5.0YM5  
V
6V  
IN  
VOUT  
5V  
IN OUT  
EN  
GND  
5V Linear Regulator Application  
IttyBitty is a registered trademark of Micrel, 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  
M9999-110408-B  
November 2008  
1234567

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