LSP3124

␡ൣᐲࡋᆷ⅓⭥ᆀᴹ‫ޜ‬ਨ TEL:0755Ͳ82923906 FAX˖0755-61640813 Http://www.chuangyuxin.com Liteon Semiconductor Corporation LSP3124 150KHZ 3A PWM Buck DC/DC Converter „ z z z z z z z z z z z FEATURES Output voltage: 3.3V, 5.0V, 12V, and adjustable output version Adjustable version output voltage range:1.23V to 18V±4% 150KHz±15% fixed switching frequency Voltage mode non-synchronous PWM control Thermal-shutdown and current-limit protection ON/OFF shutdown control input Operating voltage can be up to 22V Output load current: 3A Low power standby mode Built-in switching transistor on chip TO252-5L packages „ GENERAL DESCRIPTION „ z z z APPLICATIONS Simple High-efficiency step-down regulator On-card switching regulators Positive to negative converter The LSP3124 series are monolithic IC that design for a step-down DC/DC converter, and own the ability of driving a 3 A load without additio nal transistor component. Due to reducing th e numb er o f e xternal component, the board s pace can be saved easily. The external shutdown function can be controlled by logic le vel a nd then come in to s tandby mod e. T he internal compensation mak es feedback control have good line and load regulation without external design. Regarding protected function, thermal shutdown is to prevent over tempera ture operating from damag e, and current limit is against over current operating of the output switch. If current limit function occurred and VFB is down to 0.5V below , the switching frequency will be re...