TL5209

• 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
• Applications
  • Portable Applications (PDAs, Laptops,
    Cell Phones)
  • Consumer Electronics
  • Post-Regulation for SMPS
• Available in Convenient SOIC-8 Surface-Mount
  Package

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.