General Description
●The LM2596 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 available in fixed output voltages of 3.3V, 5V, 12V, and an adjustable output version.
●Requiring a minimum number of external components, these regulators are simple to use and include internal frequency compensation†, and a fixed-frequency oscillator.
●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 components
●Excellent line and load regulation specifications
●150 kHz fixed frequency internal oscillator
●TTL shutdown capability
●Low power standby mode, IQtypically 80 µA
●High efficiency
●Uses readily available standard inductors
●Thermal shutdown and current limit protection
●Applications
●Simple high-efficiency step-down (buck) regulator
●On-card switching regulators
●Positive to negative converter
