FSP3124

www.DataSheet4U.com 150KHZ 3A PWM BUCK DC/DC CONVERTER FSP3124 „ 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 FSP3124 series are monolithic IC that design for a step-down DC/DC converter, and own the ability of driving a 3A load without additional transistor component. Due to reducing the number of external component, the board space can be saved easily. The external shutdown function can be controlled by logic level and then come into standby mode. The internal compensation makes feedback control have good line and load regulation without external design. Regarding protected function, thermal shutdown is to prevent over temperature operating from damage, 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 reduced. The FSP3124 series operates at a switching frequency of 150 KHz thus allowing smaller sized filter c...