In summary, Linear Technology’s LTC3895 is a high performance step-down switching regulator DC/DC controller that drives an all N-channel synchronous power MOSFET stage that can operate from input voltages up to 140V, with a 150V abs max rating. A constant frequency current mode architecture allows a phase-lockable frequency of up to 850kHz. The gate drive voltage can be programmed from 5V to 10V to allow the use of logic or standard-level MOSFETs to maximize efficiency. The low 40μA no-load quiescent current helps extend operating run time in battery-powered systems. The output voltage can be adjusted between 0.8V to 60V using external resistors or pin-programmed for a fixed 5V or 3.3V. An internal charge pump allows for 100% duty cycle operation a useful feature for switching surge stopping applications and when being powered from a battery during discharge.