TL5209 Datasheet, PDF (1/22 Pages) Texas Instruments – 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
SLVS581 – SEPTEMBER 2006
FEATURES
• Adjustable and Fixed Voltages of 1.8 V, 2.5 V,
3 V, 3.3 V, and 5 V
• 1%/2% Accuracy (25°C/Full Range)
• 500-mV (Max) Dropout at Full Load of 500 mA
• Extremely Tight Regulation Over Temperature
Range
– 0.1%/V (Max) Line Regulation
– 0.7% (Max) Load Regulation
• Ultra-Low Noise Capability (300 nV/√Hz Typ)
• Shutdown Current of 3 µA (Max)
• Low Temperature Coefficient
• Current Limiting and Thermal Protection
• Stable With Minimum Load of 1 mA
• Reverse-Battery Protection
• Applications
– Portable Applications (PDAs, Laptops,
Cell Phones)
– Consumer Electronics
– Post-Regulation for SMPS
• Available in Convenient Surface-Mount
Packages: SOT-223, SOIC-8, and TO-263
FIXED VOLTAGE . . . D PACKAGE
(TOP VIEW)
EN 1
IN 2
OUT 3
BYP 4
8 GND
7 GND
6 GND
5 GND
ADJUSTABLE VOLTAGE . . . D PACKAGE
(TOP VIEW)
EN 1
IN 2
OUT 3
ADJ/BYP 4
8 GND
7 GND
6 GND
5 GND
FIXED VOLTAGE . . . DCY (SOT-223) PACKAGE
(TOP VIEW)
GND
1
2
3
FIXED VOLTAGE . . . KTT (TO-263) PACKAGE
(TOP VIEW)
5
BYP
4
OUT
3
GND
2
IN
1
EN
ADJUSTABLE VOLTAGE . . . KTT (TO-263) PACKAGE
(TOP VIEW)
5
ADJ/BYP
4
OUT
3
GND
2
IN
1
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.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2006, Texas Instruments Incorporated