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MIC5252-1.8BM5 PDF预览

MIC5252-1.8BM5

更新时间: 2024-11-22 22:35:35
品牌 Logo 应用领域
麦瑞 - MICREL /
页数 文件大小 规格书
9页 88K
描述
150MA HIGH PSRR LOW NOISE UCAP CMOS LDO

MIC5252-1.8BM5 数据手册

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MIC5252  
150mA High PSRR, Low Noise µCap CMOS LDO  
General Description  
Features  
The MIC5252 is an efficient, precise CMOS voltage regulator  
optimized for ultra-low-noise applications. It offers 1% initial  
accuracy, extremely-low dropout voltage (135mV at 150mA)  
and low ground current (typically 90µA). The MIC5252 pro-  
vides a very-low-noise output, ideal for RF applications  
where a clean voltage source is required. The MIC5252 has  
a high PSRR even at low supply voltages, critical for battery  
operated electronics. A noise bypass pin is also available for  
further reduction of output noise.  
Input voltage range: 2.7V to 6.0V  
PSRR = 50dB @ V + 0.3V  
O
Ultra-low output noise: 30µV(rms)  
Stability with ceramic output capacitors  
Ultra-low dropout: 135mV @ 150mA  
High output accuracy:  
1.0% initial accuracy  
2.0% over temperature  
Low quiescent current: 90µA  
Tight load and line regulation  
TTL-Logic-controlled enable input  
• “Zerooff-mode current  
Designed specifically for handheld and battery-powered de-  
vices, the MIC5252 provides a TTL-logic-compatible enable  
pin.Whendisabled,powerconsumptiondropsnearlytozero.  
Thermal shutdown and current limit protection  
The MIC5252 also works with low-ESR ceramic capacitors,  
reducing the amount of board space necessary for power  
applications, critical in handheld wireless devices.  
Applications  
Key features include current limit, thermal shutdown, faster  
transient response, and an active clamp to speed up device  
turn-off. The MIC5252 is available in the 6-pin 2mm × 2mm  
MLF™ package and the IttyBitty® SOT-23-5 package in a  
wide range of output voltages.  
Cellular phones and pagers  
Cellular accessories  
Battery-powered equipment  
Laptop, notebook, and palmtop computers  
Consumer/personal electronics  
Typical Application  
VOUT  
COUT  
VIN  
MIC5252-x.xBML  
MIC5252-x.xBM5  
VIN  
VOUT  
ENABLE  
SHUTDOWN  
C
IN = 1.0µF  
Ceramic  
1
2
3
5
6
5
4
1
2
3
EN  
CBYP  
(optional)  
COUT = 1.0µF  
Ceramic  
4
Enable  
Shutdown  
EN  
EN (pin 3) may be  
connected directly  
to IN (pin 1).  
C
BYP = 0.01µF  
Ultra-Low-Noise Regulator Application  
IttyBitty is a registered trademark of Micrel, Inc.  
MicroLeadFrame and MLF are trademarks of Amkor Technology.  
Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 944-0970 • http://www.micrel.com  
M0394-121003  
December 2003  
1

MIC5252-1.8BM5 替代型号

型号 品牌 替代类型 描述 数据表
TPS78218DDCR TI

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具有使能功能和 -40°C 至 +125°C 工作温度范围的 150mA、毫微级 IQ、低

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