The LT1763IS8#PBF with LDO voltage regulators 500mA, low noise, low dropout micropower regulator in SO-8 manufactured by Analog Devices is a low noise linear regulator with a very low quiescent current (350uA max), designed for battery powered applications that require very low current draw. Its drop-out voltage of 250mV at 500mA enables the generation of low noise power supplies from a single cell alkaline battery. It features 1% precision output voltage tolerance, and excellent line and load transient response. The LT1763IS8 also has a low output voltage ripple and low supply current to keep high frequency noise to a minimum. Moreover, short circuit protection, thermal shutdown, and current limiting combine to provide an extremely rugged device. This part is suitable for portable applications such as cellular phones and portable instrumentation.