In summary, the LTC3863, operating over a 3.5V to 60V input supply range, is designed to protect against high voltage transients, to operate continuously during automotive cold crank and cover a broad range of input sources and battery chemistries. This device helps increase the run-time in battery-powered applications with its low 70μA quiescent current in standby mode with the output enabled in Burst Mode® operation. The LTC3863’s output voltage can be set from -0.4V to -150V or lower at up to 3A typical; making it well suited for 12V or 24V automotive, heavy equipment, industrial control, robotic and telecom applications. The LTC3863 drives an external P-channel MOSFET, operates with a selectable fixed frequency between 50kHz and 850kHz and is synchronizable to an external clock from 75kHz to 750kHz. Its current-mode architecture provides easy loop compensation, fast transient response, cycle-by-cycle over current protection and excellent line regulation. Output current sensing is accomplished by measuring the voltage drop across a sense resistor. Additional features include programmable soft start or tracking, overvoltage protection, overcurrent and short-circuit protection, a power good output signal and FMEA (failure mode and effects analysis) verified for adjacent pin opens and shorts.