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LP3990TLX-1.8 PDF预览

LP3990TLX-1.8

更新时间： 2024-11-23 12:09:55
品牌 Logo 应用领域
德州仪器 - TI 稳压器
页数 文件大小 规格书
24页 979K
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LP3990 150mA Linear Voltage Regulator for Digital Applications

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LP3990TLX-1.8 数据手册

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LP3990  
www.ti.com  
SNVS251I –MAY 2004–REVISED MAY 2013  
LP3990 150mA Linear Voltage Regulator for Digital Applications  
Check for Samples: LP3990  
1
FEATURES  
APPLICATIONS  
2
•
•
•
•
•
1% Voltage Accuracy at Room Temperature  
Stable with Ceramic Capacitor  
•
•
Cellular Handsets  
Hand-Held Information Appliances  
Logic Controlled Enable  
DESCRIPTION  
No Noise Bypass Capacitor Required  
Thermal-Overload and Short-Circuit Protection  
The LP3990 regulator is designed to meet the  
requirements of portable, battery-powered systems  
providing an accurate output voltage, low noise, and  
low quiescent current. The LP3990 will provide a  
0.8V output from the low input voltage of 2V at up to  
150mA load current. When switched into shutdown  
mode via a logic signal at the enable pin, the power  
consumption is reduced to virtually zero.  
KEY SPECIFICATIONS  
•
•
•
•
•
•
•
•
•
Input Voltage Range, 2.0 to 6.0V  
Output Voltage Range, 0.8 to 3.3V  
Output Current, 150mA  
Output Stable - Capacitors, 1.0µF  
Virtually Zero IQ (Disabled), <10nA  
Very Low IQ (Enabled), 43µA  
Low Output Noise, 150µVRMS  
PSRR, 55dB at 1kHz  
The LP3990 is designed to be stable with space  
saving ceramic capacitors as small as 1.0µF.  
Performance is specified for a -40°C to 125°C  
junction temperature range.  
For output voltages other than 0.8V, 1.2, 1.35V, 1.5V,  
1.8V, 2.5V, 2.8V, or 3.3V please contact your local  
NSC sales office.  
Fast Start Up, 105µs  
PACKAGE  
All available in Lead Free option.  
•
•
•
4-Pin DSBGA, 1 mm x 1.3 mm  
6-pin WQFN (SOT-23 Footprint)  
SOT-23  
For other package options contact your Texas Instruments sales  
office.  
Typical Application Circuit  
LP3990  
V
V
IN  
IN  
6
V
OUT  
1.0 mF  
V
OUT  
1
1.0 mF  
V
V
EN  
EN  
5
GND  
2
(WQFN pin connections shown)  
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 © 2004–2013, Texas Instruments Incorporated  
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LP3990TLX-1.8 替代型号

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LP3990TL-1.8/NOPB TI

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