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.