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LP3999ITLX-2.8/NOPB PDF预览

LP3999ITLX-2.8/NOPB

更新时间： 2024-11-24 11:09:39
品牌 Logo 应用领域
德州仪器 - TI 输出元件稳压器调节器
页数 文件大小 规格书
19页 594K
描述
具有使能功能的 150mA、低噪声、低压降稳压器 | YZR | 5 | -40 to 125

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LP3999ITLX-2.8/NOPB 数据手册

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LP3999  
www.ti.com  
SNVS207E –JUNE 2003–REVISED MAY 2013  
LP3999 Low Noise 150mA Voltage Regulator for RF/Analog Applications  
Check for Samples: LP3999  
1
FEATURES  
APPLICATIONS  
2
•
•
•
•
•
•
5 pin DSBGA Package  
•
•
•
•
•
•
GSM Portable Phones  
Stable with Ceramic Capacitor  
Logic Controlled Enable  
CDMA Cellular Handsets  
Wideband CDMA Cellular Handsets  
Bluetooth Devices  
Fast Turn-on  
Thermal-overload and short-circuit protection  
Portable Information Appliances  
Handheld MP3 Devices  
−40 to +125°C junction temperature range for  
operation  
DESCRIPTION  
KEY SPECIFICATIONS  
The LP3999 regulator is designed to meet the  
requirements of portable wireless battery-powered  
applications and will provide an accurate output  
voltage with low noise and low quiescent current.  
Ideally suited for powering RF/Analog devices this  
device will also be used to meet more general circuit  
requirements.  
•
•
•
2.5V to 6.0V Input Range  
Accurate Output Voltage; ±75mV / 2%  
60 mV Typical Dropout with 150 mA Load. Vout  
> 2.5V  
•
Virtually Zero Quiescent Current when  
Disabled  
For battery powered applications the low dropout and  
low ground current provided by the device allows the  
lifetime of the battery to be maximized.The inclusion  
of an Enable(disable) control can be used by the  
system to further extend the battery lifetime by  
reducing the power consumption to virtually zero.  
Should the application require a device with an active  
disable function please refer to device LP3995.  
•
•
•
•
10 μVrms Output Noise Over 10Hz to 100kHz  
Stable with a 1 μF Output Capacitor  
Ensured 150 mA Output Current  
Fast Turn-on Time; 140 μs (Typ.)  
The LP3999 also features internal protection against  
short-circuit  
conditions.  
currents  
and  
over-temperature  
Typical Application Circuit  
LP3999  
C3  
V
V
IN  
IN  
C1  
A3  
V
1.0 mF  
OUT  
1.0 uF  
A1  
Enable Control,  
Active high  
C
Load  
BYPASS  
V
EN  
GND  
B2  
10 nF  
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
All trademarks are the property of their respective owners.  
2
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2003–2013, Texas Instruments Incorporated  
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