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TL5209-25

更新时间： 2024-11-29 03:59:19
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德州仪器 - TI 稳压器
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22页 371K
描述
500-mA LOW-NOISE LOW-DROPOUT VOLTAGE REGULATOR WITH SHUTDOWN

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TL5209  
500-mA LOW-NOISE LOW-DROPOUT VOLTAGE REGULATOR  
WITH SHUTDOWN  
www.ti.com  
SLVS581–SEPTEMBER 2006  
FEATURES  
•
Adjustable and Fixed Voltages of 1.8 V, 2.5 V,  
3 V, 3.3 V, and 5 V  
•
•
•
•
Current Limiting and Thermal Protection  
Stable With Minimum Load of 1 mA  
Reverse-Battery Protection  
Applications  
•
•
•
1%/2% Accuracy (25°C/Full Range)  
500-mV (Max) Dropout at Full Load of 500 mA  
Extremely Tight Regulation Over Temperature  
Range  
– Portable Applications (PDAs, Laptops,  
Cell Phones)  
– 0.1%/V (Max) Line Regulation  
– 0.7% (Max) Load Regulation  
– Consumer Electronics  
– Post-Regulation for SMPS  
•
•
•
Ultra-Low Noise Capability (300 nV/√Hz Typ)  
Shutdown Current of 3 µA (Max)  
Low Temperature Coefficient  
•
Available in Convenient Surface-Mount  
Packages: SOT-223, SOIC-8, and TO-263  
FIXED VOLTAGE . . . DCY (SOT-223) PACKAGE  
(TOP VIEW)  
ADJUSTABLE VOLTAGE . . . D PACKAGE  
(TOP VIEW)  
FIXED VOLTAGE . . . D PACKAGE  
(TOP VIEW)  
GND  
GND  
GND  
GND  
GND  
1
2
3
4
8
7
6
5
EN  
IN  
GND  
GND  
GND  
GND  
1
2
3
4
8
7
6
5
EN  
IN  
OUT  
ADJ/BYP  
OUT  
BYP  
1
2
3
FIXED VOLTAGE . . . KTT (TO-263) PACKAGE  
(TOP VIEW)  
ADJUSTABLE VOLTAGE . . . KTT (TO-263) PACKAGE  
(TOP VIEW)  
5
5
4
3
ADJ/BYP  
OUT  
GND  
IN  
BYP  
OUT  
GND  
IN  
4
3
2
2
1
1
EN  
EN  
DESCRIPTION/ORDERING INFORMATION  
The TL5209 is an efficient PNP low-dropout (LDO) regulator that is well suited for portable applications. It has  
significantly lower quiescent current than previously was available from traditional PNP regulators and allows for  
a shutdown current (SOIC-8 and TO-263) of only 0.05 µA (typical). The TL5209 also has very good dropout  
voltage characteristics, requiring a maximum dropout of 60 mV at light loads and 500 mV at full load. In addition,  
the LDO also has 1% output voltage accuracy and extremely tight line and load regulation that is hard to match  
by its CMOS counterparts.  
For noise-sensitive applications, the TL5209 allows for low-noise capability via an external bypass capacitor  
connected to the BYPASS pin (SOIC-8 and TO-263), which reduces the output noise of the regulator. Other  
features include current limiting, thermal shutdown, reverse-battery protection, and low temperature coefficient.  
The TL5209 is available in adjustable output and fixed-output versions of 1.8 V, 2.5 V, 3 V, 3.3 V, and 5 V.  
Offered in surface-mount packages of SOT-223, SOIC, and TO-263, the TL5209 is characterized for operation  
over the virtual junction temperature ranges of –40°C to 125°C.  
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.  
PRODUCTION DATA information is current as of publication date.  
Copyright © 2006, Texas Instruments Incorporated  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
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