LM2596 Series

Buck Regulator, Switching, 3.0 A

Catalog

Buck Regulator, Switching, 3.0 A

Part	Package / Case	Supplier Device Package	Operating Temperature [Min]	Operating Temperature [Max]	Topology	Voltage - Output (Max)	Voltage - Output (Min/Fixed)	Output Configuration	Current - Output	Number of Outputs	Output Type	Function	Mounting Type	Voltage - Input (Min) [Min]	Voltage - Input [Min]	Voltage - Input [Max]	Voltage - Output	Outputs and Type	Outputs and Type	Supplied Contents	Main Purpose	Board Type	Utilized IC / Part	Regulator Topology
ON Semiconductor LM2596TVADJG	TO-220-5 Formed Leads	TO-220-5	-40 °C	125 ¯C	Boost Buck Buck-Boost	37 V	1.23 V	Positive or Negative	3 A	1	Adjustable	Step-Down Step-Up Step-Up/Step-Down	Through Hole	4.5 V
ON Semiconductor LM2596ATPBCKGEVB									3 A						4.5 V	40 V	5 V	Non-Isolated	1	Board(s)	DC/DC Step Down	Fully Populated	LM2596	Buck
ON Semiconductor LM2596TADJG	TO-220-5	TO-220-5	-40 °C	125 ¯C	Boost Buck Buck-Boost	37 V	1.23 V	Positive or Negative	3 A	1	Adjustable	Step-Down Step-Up Step-Up/Step-Down	Through Hole	4.5 V
ON Semiconductor LM2596ADPBCKGEVB									3 A						4.5 V	40 V	5 V	Non-Isolated	1	Board(s)	DC/DC Step Down	Fully Populated	LM2596	Buck
ON Semiconductor LM2596DSADJG	D2PAK (5 Leads + Tab) TO-263-6 TO-263BA	D2PAK-5	-40 °C	125 ¯C	Boost Buck Buck-Boost	37 V	1.23 V	Positive or Negative	3 A	1	Adjustable	Step-Down Step-Up Step-Up/Step-Down	Surface Mount	4.5 V

Catalog

Buck Regulator, Switching, 3.0 A

Key Features

• Adjustable output voltage range, 1.2V to 37V +/-4% max over line and load conditions

• Available in TO-220 and D2PAK packages

• Guaranteed 3A output load current

• Input voltage range up to 40V

• Excellent line and load regulation specifications

• 150 kHz fixed frequency internal oscillator

• TTL shutdown capability

• Low power standby mode, Iq typically 80 µA

• Uses readily available standard inductors

• Thermal shutdown and current limit

Description

The LM2596 series of Buck Switching 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.Requiring a minimum number of external components, these Buck Switching Regulators are simple to use and include internal frequency compensation, and a fixed-frequency oscillator.The LM2596 series operates at a switching frequency of 150 kHz thus allowing smaller sized filter components 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 D2PAK surface mount package.A standard series of inductors are available from several different manufacturers optimized for use with the LM2596 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 temperature shutdown for complete protection under fault conditions. See LM2595 for 1.0A and LM2594 for 0.5A.