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FT531

更新时间： 2024-10-28 12:55:35
品牌 Logo 应用领域
其他 - ETC /
页数 文件大小 规格书
23页 271K
描述
Ultra Low Noise, High PSRR, 250mA LDO

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FT531 数据手册

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Fremont Micro Devices  
Ultra Low Noise, High PSRR, 250mA LDO  
FT531xx  
DESCRIPTION  
FEATURES  
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Ultra-Low Noise for RF Application  
The FT531xx is designed for portable RF and  
wireless applications with demanding performance  
and space requirements. The FT531xx performance is  
optimized for battery powered systems to deliver  
ultra low noise and low quiescent current. Regulator  
ground current increases only slightly in dropout,  
further prolonging the battery life.  
Ultra-Fast Response in Line/Load Transient  
Quick Start-Up (Typically 100uS)  
Low Quiescent Current: 36uA  
Less than 0.1uA Standby Current When  
Shutdown  
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Low Dropout Voltage: 120mV @ 100mA  
Wide Operating Voltage Ranges : 2.5V to 6V  
TTL-Logic-Controlled Shutdown Input  
Low Temperature Coefficient  
The FT531xx also works with low-ESR ceramic  
capacitors, reducing the amount of board space  
necessary for power applications, critical in  
hand-held wireless devices. The FT531xx consumes  
less than 0.1uA in shutdown mode and has fast  
turn-on time less than 100uS. The other features  
include low dropout voltage, high output accuracy,  
current limiting protection, and high ripple rejection  
ratio. The FT531xx is available in the 5-lead of  
SOT-23-5(L), SC-70 and the 3-lead of SOT-23-3(L),  
SOT-89-3(L), SOT-23 packages.  
Current Limiting Protection  
Only 1uF Output Capacitor Required  
High Power Supply Rejection Ratio  
ROHS Compliant and 100% Lead (Pb)-Free  
Custom Voltage Available  
Custom Options for CE Logic and Build-in  
Pull-up/down Available  
APPLLICATIONS  
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CDMA/GSM Cellular Handsets  
Battery-Powered Equipment  
Laptop, Palmtops, Notebook Computers  
Hand-Held Instruments  
PCMCIA Cards  
Portable Information Appliances  
www.fremontmicro.com  
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DS531-A8  
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