The LM2596 /LM2596HV 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 compensationt, and a fixed-frequ
ency oscillator.
The LM2596 /LM2596HV series operates at a switching frequency of150 kHz thus allowing smaller sized filter compontents 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-lesd TO-262 surface mount package.
Features:
3.3V, 5V, 12V, and adjustable output versions
Adjustable version output voltage range, 1.2V to 37V (57V for HV version)
±4% max over line and load conditions
Available in TO-220 and TO-263,TO-220B packages
Guaranteed 3A output load current
Input voltage range up to 60V
Requires only 4 external components
Excellent line and load regulation specifications
150 kHz 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
For complete product specifications, please refer to:

DataSheet