Datasheet Summary
High-Efficiency, Fast-Response, 40V Input, 3A Synchronous Step-Down Regulator
General Description
The SY21153A high-efficiency synchronous stepdown DC/DC converter operates using a peakcurrent-mode control architecture and can deliver 3A load current over a wide input voltage range from 4.5V to 40V. It integrates a main switch and a synchronous switch with low RDS(ON) to minimize conduction loss.
The switching frequency is adjustable from 500kHz to 2.5MHz using an external resistor. The SY21153A also Features very low 19µA quiescent current to achieve high efficiency under light load, and internal soft-start to limit inrush current during power-on.
The SY21153A is available in a...