MSP1250 Datasheet | Unknown Manufacturer

Description The MSP1250 series of regulators are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator, capable of driving a 3A load with excellent line and load regulation. These devices are avail-able in fixed output voltages of 3.3V, 5V, 12V, and an adjust-able output version. Requiring a minimum number of external ponents, these regulators are simple to use and include internal frequency pensation†, and a fixed-frequency oscillator. The MSP1250 series operates at a switching frequency of 150 k Hz thus allowing smaller sized filter ponents than what would be needed with lower frequency switching regulators. Available in a standard 5-lead TO-220 package with several different lead bend options, and a 5-lead TO-263 surface mount package. A standard series of inductors are available from several different manufacturers optimized for use with the MSP1250 series. This feature greatly simplifies the design of switch-mode power supplies. Other features include a guaranteed ±4% tolerance on output voltage under specified input voltage and output load conditions, and ±15% on the oscillator frequency. 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 tem perature shutdown for plete protection under fault conditions. .. Features 3.3V, 5V, 12V, and adjustable output versions Adjustable version output voltage range, 1.2V to 37V±4% max over line and load conditions Available in TO-220 and TO-263 packages Guaranteed 3A output load current Input voltage range up to 40V Requires only 4 external ponents Excellent line and load regulation specifications 150 k Hz fixed frequency internal oscillator TTL shutdown capability Low power standby mode, IQ typically 80 µA High efficiency Uses readily available standard inductors Thermal shutdown and current limit protection Applications Simple...