AP1518 Datasheet | Anachip

Features - Adjustable version output voltage range, 0.8V to 18V+4% - 300KHz +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 - TO220-5L and TO263-5L Pb-Free packages - Low power standby mode - Built-in switching transistor on chip - General Description The AP1518 series are monolithic IC designed for a step-down DC/DC converter, and own the ability of driving a 3A load without external transistor. Due to reducing the number of external ponent, the board space can be saved easily. The external shutdown function can be controlled by logic level and then e into standby mode. The internal pensation 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 to prevent 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 AP1518 series operate at a switching frequency of 300KHz thus allowing smaller sized filter ponents than what would be needed with lower frequency switching regulators. Other features include a guaranteed +4% tolerance on output voltage under specified input voltage and output load conditions, and +15% on the oscillator frequency. The packages are available in a standard 5-lead TO-220 package or a 5-lead TO-263. - Applications - Simple High-efficiency step-down regulator - On-card switching regulators - Positive to negative converter - Pin Assignments ( Top View ) 5 SD 4 FB 3 Gnd 2 Output 1 VIN - Pin Descriptions Name VIN Output GND FB SD Description Operating voltage input Switching output Ground Output voltage feedback control ON /OFF Shutdown Metal Tab GND TO263-5L ( Top View ) 5 SD 4 FB 3 Gnd 2 Output 1 VIN TO220-5L This datasheet...