APE1723-HF-3

Advanced Power Electronics Corp. APE1723-HF-3 200kHz, 1A PWM Buck DC/DC Converter Features Adjustable Output Voltage: From 0.745V to 24V Fixed switching frequency of 200kHz Thermal-shutdown and current-limit protection. ON/OFF shutdown control input. Short Circuit Protection (SCP). Operating voltage up to 26V. Output load current up to 1A. Low-power standby mode. Built-in switching transistor on chip. SO-8 or 5-Lead SOT-23 packages RoHS-compliant, halogen-free. Description The APE1723 series are monolithic ICs designed as a step-down DC/DC converter, and have the ability to drive a 1A load without an external transistor, saving board space. The external shutdown function can be controlled with logic level signals to put the device into standby mode. The internal compensation provides feedback control for good line and load regulation without external components. Thermal shutdown is provided to prevent damage from over-temperature operation, and current limiting is available to protect the output switch. If the APE1723’s VFB is taken below 0.5V, the switching frequency will be reduced. The APE1723 operates at a fixed switching frequency of 200kHz allowing smaller sized filter components. Other features include a guaranteed ±3% tolerance on output voltage under specified input voltage and output load conditions. The APE1723 is available in a SOT-23-5 or SO-8 package. Typical Application VIN=12V L1 U1 APE1723 5 VIN SW 1 (Refer to table 1) D1 B140A 4 C4 0.1uF EN ON/OFF FB 3 2...