The TPS78330DDCR is an ultra-low quiescent current LDO voltage regulator manufactured by Texas Instruments. It is a 150mA regulator with an extremely low quiescent current of 0.5 uA. It is designed to provide a stable voltage output (1.2 V to 5.5 V) and has fast transient response with a maximum line regulation of 0.1%. It has low noise, low dropout voltage, and a high PSRR, making it an ideal choice for applications where power conservation and stable power delivery are paramount. It also offers excellent surge protection, an integrated ESD protection, and is capable of operation over a wide temperature range (-40°C to 125°C). This part is designed to provide high power efficiency, reliability, and performance in battery powered, automotive, industrial, and communications systems.