1 Features
1• Adjustable Output Voltage
• 1%/2% Accuracy (25°C/Full Range)
• 500-mV (Maximum) Dropout at Full Load of
500 mA
• Tight Regulation Overtemperature Range
– 0.1%/V (Maximum) Line Regulation
– 0.7% (Maximum) Load Regulation
• Ultra Low-Noise Capability (300 nV/√Hz Typical)
• Shutdown Current of 3 μA (Maximum)
• Low Temperature Coefficient
• Current Limiting and Thermal Protection
• Stable With Minimum Load of 1 mA
• Reverse-Battery Protection reverse•
Applications
– Portable Applications (PDAs, Laptops,
Cell Phones)
– Consumer Electronics
– Post-Regulation for SMPS
• Available in Convenient SOIC-8 Surface-Mount
Package

2 Applications
• Set-Top Boxes
• PCs and Notebooks
• EPOS
• Building Automation

3 Description
The TL5209 device is 500-mA low-dropout (LDO)
regulator that is well suited for portable applications. It has a lower quiescent current than most traditional
PNP regulators and allows for a shutdown current of
0.05 μA (typical). The TL5209 also has very good
dropout voltage characteristics, requiring a maximum
dropout of 10 mV at light loads and 500 mV at full load. In addition, the LDO also has a 1% output
voltage accuracy and very tight line and load
regulation that is comparable to its CMOS
counterparts.
For noise-sensitive applications, the TL5209 allows
for low-noise capability through an external bypass capacitor connected to the BYP pin, 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 with adjustable output.
Offered in an SOIC-8 surface-mount package, the
TL5209 is characterized for operation over the virtual junction temperature ranges of –40°C to 125°C.