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LP8345CLD-2.5/NOPB PDF预览

LP8345CLD-2.5/NOPB

更新时间： 2024-11-15 15:37:35
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德州仪器 - TI 输出元件调节器
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LP8345CLD-2.5/NOPB 数据手册

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OBSOLETE  
LP8345  
www.ti.com  
SNVS229F –FEBRUARY 2003–REVISED APRIL 2013  
Low Dropout, Low IQ, 500mA CMOS Linear Regulator  
Check for Samples: LP8345  
1
FEATURES  
DESCRIPTION  
The LP8345 low-dropout CMOS linear regulator are  
2
•
•
•
•
•
•
•
•
•
•
±1.5% Typical VOUT Tolerance  
210mV Typical Dropout @ 500mA (VO = 5V)  
Wide Operating Range 2.7V to 10V  
Internal 500mA PMOS Output Transistor  
19µA Typical Quiescent Current  
Thermal Overload Limiting  
available in 5V, 3.3V, 2.5V, 1.8V or adjustable output  
versions. Packaged in our 6ld WSON package and  
3ld DPAK they can deliver up to 500mA output  
current.  
Typical dropout voltage @ 500mA is 210mV for the  
5.0V version, 270mV for the 3.3V version and 335mV  
for the 2.5V version.  
Foldback Current Limiting  
The devices include a zener trimmed bandgap  
voltage reference, foldback current limiting and  
thermal overload limiting.  
Zener Trimmed Bandgap Reference  
Space Saving WSON package  
Temperature Range  
The LP8345 features a PMOS output transistor which  
unlike PNP type low dropout regulators requires no  
base drive current. This allows the device ground  
current to remain less than 50µA over operating  
temperature, supply voltage and irrespective of the  
load current.  
–
–
LP8345C 0°C to 125°C  
LP8345I −40°C to 125°C  
APPLICATIONS  
•
•
•
•
Hard Disk Drives  
Notebook Computers  
Battery Powered Electronics  
Portable Instrumentation  
TYPICAL APPLICATIONS  
Fixed VOUT  
Adjustable VOUT  
3.3V  
1.5V  
V
OUT  
V
IN  
V
V
OUT  
IN  
V
V
IN  
OUT  
1.0µF  
Ceramic  
1.0µF  
Ceramic  
1.0µF  
Ceramic  
1.0µF  
Ceramic  
25k  
V
Sense  
OUT  
(LLP only)  
ADJ  
125k  
GND  
GND  
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  
1234567...12

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