The TPS62125 is a high efficiency synchronous step down converter optimized for low and ultra low power applications providing up to 300mA output current. The wide input voltage range of 3V to 17V supports four cell alkaline and 1 to 4 cell Li-Ion batteries in series configuration as well as 9V to 15V powered applications. The device includes a precise low power enable comparator which can be used as an input supply voltage supervisor (SVS) to address system specific power up and down requirements.