The TMI39610 synchronous buck converter is  designed to regulate over a wide input voltage  range, minimizing the need for external surge  suppression components. A minimum controllable  on-time of 50ns facilitates large step-down  conversion ratios, enabling the direct step-down  from 48V to 72V nominal input voltage to lowvoltage rails for reducing system complexity and  solution cost. The TMI39610 operates during input  voltage dips as low as 6 V, making it an excellent  choice for wide input supply range industrial and  high cell count battery pack applications. With integrated high-side and low-side MOSFETs,  the TMI39610 delivers up to 1A of output current. A  constant on-time (COT) control architecture  provides nearly constant switching frequency with  excellent load and line transient response.  Additional features of the TMI39610 include ultralow quiescent IQ and PFM operation mode for high  light-load efficiency, innovative peak and valley  overcurrent protection, integrated VCC bias supply  and bootstrap diode, precision enable and input  UVLO, and thermal shutdown protection with  automatic recovery. An open drain PG indicator  provides sequencing, fault reporting, and output  voltage monitoring.