The TMI3256B is a high efficiency 600kHz,  Constant on-Time (COT) control mode  synchronous step-down DC-DC converter capable  of delivering up to 6A current. TMI3256B integrates  main switch and synchronous switch with very low  RDS(ON) to minimize the conduction loss. Low output  voltage ripple and small external inductor and  capacitor size are achieved with 600kHz switching  frequency. It adopts the COT architecture to  achieve fast transient responses for high voltage step down applications. The TMI3256B requires a minimum number of  readily available standard external components  and is available in a 6-pin DFN2x2-6 RoHS  compliant package.