The LT3470ETS8#TRMPBF is a switching voltage regulator with an output voltage of 300mA and 40V, in a ThinSOT package, manufactured by Analog Devices. It is a micropower step-down regulator, providing efficiency in a very small form factor. The device employs synchronous rectification to minimize losses and reduce quantity of external components. Enabled by a shutdown pin, the regulator can support very low quiescent current in shutdown mode, ideal for battery-powered applications. It has a wide input voltage range from 4.5V to 40V, making it suitable for automotive and industrial applications. Other features include adjustable switching frequency, up to 1.5A peak switch current limit, over 80dB PSRR at 100KHz, thermal foldback meant to protect from over-temperature conditions, integrated circuitry for current-sense and soft-start, so the output power can be regulated to avoid inrush current. The device is RoHS compliant.