BUY LM2577SX-ADJ https://www.utsource.net/itm/p/11769259.html

Description: The LM2577SX-ADJ is a monolithic integrated circuit specifically designed to provide all the active functions for a step-up (boost) switching regulator, capable of driving a 3A load with excellent line and load regulation. Features: Input voltage range: 3V to 40V Output voltage range: 1.23V to 37V Output current: 3A High efficiency: up to 95% Low quiescent current: 10mA Thermal shutdown protection Current limit protection Soft-start Internal compensation Low profile (TO-263 package) Applications: Battery-powered systems Portable equipment DC/DC converters LED drivers Power supplies Telecom systems (For reference only)