The S-1167B50-M5T1U is an Low Dropout (LDO) Regulator manufactured by Seiko and designed in a SOT-23-5 configuration and is RoHS compliant. The part features an operating temperature range of -40°C to +125°C, as well as a low quiescent current of 15uA (typical). The output voltage is adjustable between 2.25V to 5.0V, and the input voltage can range from 2.7V to 12V. The maximum output current is also up to 500mA. The load regulation is also quite good, with a rated accuracy of ±2.0% (typical). The LDO also offers protection against short circuits, current limit, thermal shutdown, and high-point current limit.