TD2576

T  echcode®       3A 52KHz PWM Buck DC/DC Converter DATASHEET TD2576 General Description  Features    The TD2576 is a series of easy to use fixed and adjustable step-down (buck) switch-mode voltage regulators. These devices are available in fixed output voltage of 3.3V, 5V, and an adjustable output version. Both versions are capable of driving a 3A load with excellent line and load regulation. Requiring a minimum number of external components, these regulators are simple to use and include internal frequency compensation, and a fixed-frequency oscillator. The output voltage is guaranteed to ±3% tolerance under specified input voltage and output load conditions. The oscillator frequency is guaranteed to ±15%. External shutdown is included, featuring typically 80 µA standby current. Self protection features include a two stage frequency reducing current limit for the output switch and an over temperature shutdown for complete protection under fault conditions. The TD2576 is available in TO-220B-5L TO220-5L and TO-263-5L packages.   z 3.3V, 5V and adjustable output versions z Output adjustable from 1.23v to 43V z Fixed 52KHz frequency internal oscillator z Guaranteed 3A output load current z Input voltage range up to 45V z Low power standby mode, IQ typically 80 µA z TTL shutdown capability z Excellent line and load regulation z Requires only 4 external components z High efficiency z Thermal shutdown and current limit protection z Available in TO-220B/TO220 and TO-263 pa...