The STMicroelectronics low drop and low noise voltage regulator, it is fixed output voltage regulator. The ultra low drop voltage and the low quiescent current make them particularly suitable for low noise, low power applications, and in battery powered systems. In sleep mode quiescent current is less than 1 μA when INHIBIT pin is pulled low. Shutdown logic control function is available on pin 3 (TTL compatible).

Internal current and thermal limit
Low output noise voltage 30 μVrms
Logic controlled electronic shutdown