Texas Instruments LMR16006 SIMPLE SWITCHER® Buck Regulators are a PWM DC/DC buck (step-down) regulator with a wide input range of 4V to 60V. It is suitable for a wide range of applications from industrial to automotive for power conditioning from an unregulated source. The regulator's standby current is 28µA in ECO mode, which is suitable for battery operating systems. An ultra low 1µA shutdown current can further prolong battery life. Operating frequency is fixed at 0.7MHz (X version) and 2.1MHz (Y version) allowing the use of small external components while still being able to have low output ripple voltage. Soft-start and compensation circuits are implemented internally, which allows the device to be used with minimized external components.