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MIC5305-3.3BML PDF预览

MIC5305-3.3BML

更新时间: 2024-11-30 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
12页 191K
描述
150mA UCap Ultra-Low Dropout LDO Regulator

MIC5305-3.3BML 数据手册

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MIC5305  
150mA µCap Ultra-Low Dropout LDO Regulator  
General Description  
Features  
The MIC5305 is a high-performance, 150mA LDO regulator,  
offering extremely high PSRR and very low noise while  
consuming low ground current.  
• Ultra-low dropout voltage of 60mV @ 150mA  
Input voltage range: 2.25 to 5.5V  
Stable with ceramic output capacitor  
150mA guaranteed output current  
Low output noise 20µVrms  
Ideal for battery-operated applications, the MIC5305 fea-  
tures 1% accuracy, extremely low-dropout voltage (60mV @  
150mA), and low ground current at light load (typically 90µA).  
Equipped with a logic-compatible enable pin, the MIC5305  
can be put into a zero-off-mode current state, drawing no  
current when disabled.  
• Low quiescent current of 90µA total  
• High PSRR, up to 85dB @1kHz  
Less than 30µs turn-on time w/C  
High output accuracy:  
= 0.01µF  
BYP  
±1.0% initial accuracy  
The MIC5305 is a µCap design operating with very small  
ceramic output capacitors for stability, thereby reducing  
required board space and component cost.  
±2.0% over temperature  
Thermal shutdown protection  
Current limit protection  
Tiny 2mm × 2mm MLF-6 package  
Thin SOT-23-5 package  
TheMIC5305isavailableinfixed-outputvoltagesandadjust-  
able output voltages in the super-compact 2mm × 2mm  
MLF™-6 leadless package and thin SOT-23-5 package.  
Applications  
Cellular phones  
PDAs  
Fiber optic modules  
Portable electronics  
Notebook PCs  
Additional voltage options are available. Contact Micrel  
marketing.  
All support documentation can be found on Micrel’s web  
site at www.micrel.com.  
Audio Codec power supplies  
Typical Application  
Dropout Voltage  
70  
60  
50  
40  
30  
20  
10  
0
MIC5305  
3.0V  
VIN  
2.85V@150mA  
VOUT  
VIN VOUT  
1µF  
EN  
BYP  
GND  
0.1µF  
1µF  
0
20 40 60 80 100 120 140  
OUTPUT CURRENT (mA)  
PSRR  
(Bypass Pin Cap = 0.1µF)  
100  
90  
80  
70  
60  
50  
40  
30  
20  
10  
0
150mA  
50mA  
100µA  
0.1  
1
10  
100  
1k  
FREQUENCY (kHz)  
MicroLeadFrame and MLF are trademarks of Amkor Technology.  
Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 474-1000 • fax + 1 (408) 474-1000 • http://www.micrel.com  
M9999-081704  
August 2004  
1

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