The YX5563 is a high-voltage，step-down，switching regu- lator. It integrates a high-side， high-voltage， power MOSFET with a current limit of 3.5A， typically. The wide 6V to 100V input range accommodates a variety of step-down applications， making it ideal for automotive， industry， and lighting appli- cations. Hysteretic voltage-mode control is employed for very fast response. YX5563 proprietary feedback control scheme minimizes the number of required external components. The switching Frequency can be up to 1MHz，allowing for small component size. Thermal shutdown and short-circuit protection （SCP）provide reliable and fault-tolerant operations. A 170uA quiescent current allows the YX5563 to be used in batery-pow- ered applications. The YX5563 is available in a ESOP8 package with an exposed pad.
