The NX2154 NX2154A
controller IC is a synchronous Buck controller IC designed for step down DC to DC con- verter applications. It is optimized to convert bus volt- ages from 2V to 40V to outputs as low as 0.8V voltage. The NX2154 NX2154A
operates at fixed 300kHz. The NX2154 NX2154A
employs fixed loss-less current limiting by sensing the Rdson of synchronous MOSFET followed by hiccup feature.NX2154A has higher current limit threshold than NX2154. Feedback under voltage also triggers hiccup. Other features of the device are: 5V Gate
drive, Adaptive deadband control, Internal digital soft start, Vcc undervoltage lock out and shutdown capability via the comp pin.