Integrated Circuits (ICs)

LM2596T-3.3/NOPB

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SIMPLE SWITCHER® 4.5V TO 40V, 3A LOW COMPONENT COUNT STEP-DOWN REGULATOR

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Search across all available documentation for this part.

DocumentsAN-1197 Selecting Inductors for Buck Converters (Rev. B)Advantages of leaded packages in robust industrial designs +19

Integrated Circuits (ICs)

LM2596T-3.3/NOPB

Active

Texas Instruments

SIMPLE SWITCHER® 4.5V TO 40V, 3A LOW COMPONENT COUNT STEP-DOWN REGULATOR

Deep-Dive with AI

DocumentsAN-1197 Selecting Inductors for Buck Converters (Rev. B)Advantages of leaded packages in robust industrial designs +19

Specifications Series Pricing Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	LM2596T-3.3/NOPB

Current - Output	3 A
Function	Step-Down
Mounting Type	Through Hole
Number of Outputs	1
Operating Temperature [Max]	125 ¯C
Operating Temperature [Min]	-40 °C
Output Configuration	Positive
Output Type	1.81 mOhm
Package / Case	TO-220-5 Formed Leads
Supplier Device Package	TO-220-5
Synchronous Rectifier	False
Topology	Buck
Voltage - Input (Min) [Min]	4.5 V
Voltage - Output (Min/Fixed)	3.3 V

LM2596 Series

SIMPLE SWITCHER® 4.5V to 40V, 3A Low Component Count Step-Down Regulator

Part	Voltage - Input (Min) [Min]	Voltage - Output (Min/Fixed)	Number of Outputs	Package / Case	Mounting Type	Topology	Operating Temperature [Min]	Operating Temperature [Max]	Supplier Device Package	Output Configuration	Function	Output Type	Current - Output	Voltage - Output (Max)	Output Type
Texas Instruments LM2596T-5.0/LF03	4.5 V	5 V	1	TO-220-5 Formed Leads	Through Hole	Buck	-40 °C	125 ¯C	TO-220-5	Positive	Step-Down	1.81 mOhm	3 A
Texas Instruments LM2596SX-5.0/NOPB	4.5 V	5 V	1	D2PAK (5 Leads + Tab) TO-263-6 TO-263BA	Surface Mount	Buck	-40 °C	125 ¯C	TO-263 (DDPAK-5)	Positive	Step-Down	1.81 mOhm	3 A
Texas Instruments LM2596SX-3.3/NOPB	4.5 V	3.3 V	1	D2PAK (5 Leads + Tab) TO-263-6 TO-263BA	Surface Mount	Buck	-40 °C	125 ¯C	TO-263 (DDPAK-5)	Positive	Step-Down	1.81 mOhm	3 A
Texas Instruments LM2596T-12/LF03	4.5 V	12 V	1	TO-220-5 Formed Leads	Through Hole	Buck	-40 °C	125 ¯C	TO-220-5	Positive	Step-Down	1.81 mOhm	3 A
Texas Instruments LM2596T-3.3	4.5 V	3.3 V	1	TO-220-5 Formed Leads	Through Hole	Buck	-40 °C	125 ¯C	TO-220-5	Positive	Step-Down	1.81 mOhm	3 A
Texas Instruments LM2596T-3.3/LF03	4.5 V	3.3 V	1	TO-220-5 Formed Leads	Through Hole	Buck	-40 °C	125 ¯C	TO-220-5	Positive	Step-Down	1.81 mOhm	3 A
Texas Instruments LM2596SX-ADJ/NOPB	4.5 V	1.2 V	1	D2PAK (5 Leads + Tab) TO-263-6 TO-263BA	Surface Mount	Buck	-40 °C	125 ¯C	TO-263 (DDPAK-5)	Positive	Step-Down		3 A	37 V	Adjustable
Texas Instruments LM2596T-ADJ/LB05	4.5 V	1.2 V	1	TO-220-5 Formed Leads	Through Hole	Buck	-40 °C	125 ¯C	TO-220-5	Positive	Step-Down		3 A	37 V	Adjustable
Texas Instruments LM2596S-ADJ/NOPB	4.5 V	1.2 V	1	D2PAK (5 Leads + Tab) TO-263-6 TO-263BA	Surface Mount	Buck	-40 °C	125 ¯C	TO-263 (DDPAK-5)	Positive	Step-Down		3 A	37 V	Adjustable
Texas Instruments LM2596T-3.3/NOPB	4.5 V	3.3 V	1	TO-220-5 Formed Leads	Through Hole	Buck	-40 °C	125 ¯C	TO-220-5	Positive	Step-Down	1.81 mOhm	3 A

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Tube	1	$ 5.83
		10	$ 5.24
		45	$ 4.95
		135	$ 4.29
		270	$ 4.07
		540	$ 3.65
		1035	$ 3.08
		2520	$ 2.93
Texas Instruments	TUBE	1	$ 4.01
		100	$ 3.27
		250	$ 2.57
		1000	$ 2.18

Description

General part information

LM2596 Series

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 3-A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3 V, 5 V, 12 V, 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.

The LM2596 series operates at a switching frequency of 150 kHz, thus allowing smaller sized filter components than what can be required with lower frequency switching regulators. Available in a standard 5-pin TO-220 package with several different lead bend options, and a 5-pin TO-263 surface mount package.

Documents

Technical documentation and resources

LM2596T-3.3/NOPB

Deep-Dive with AI

LM2596T-3.3/NOPB

Deep-Dive with AI

Technical Specifications

LM2596 Series

Pricing

Description

LM2596 Series

Documents

AN-1197 Selecting Inductors for Buck Converters (Rev. B)

Advantages of leaded packages in robust industrial designs

Buck Converters Provide a Battery Charger and System Power

AN-2162 Simple Success With Conducted EMI From DC-DC Converters (Rev. C)

AN-1520 A Guide to Board Layout for Best Thermal Resistance for Exposed Packages (Rev. B)

Semiconductor and IC Package Thermal Metrics (Rev. D)

How to increase system reliability and simplify design using DC/DC converters

AN-1246 Stresses in Wide Input DC-DC Converters (Rev. C)

AN-1081 Low-Cost Low-Parts-Count DC/DC Converter With Multiple Outputs (Rev. B)

LM2596 SIMPLE SWITCHER® Power Converter 150-kHz 3-A Step-Down Voltage Regulator datasheet (Rev. G)

Simple Techniques Minimize Cross-Coupling in Distributed Power Systems

AN-2155 Layout Tips for EMI Reduction in DC/ DC Converters (Rev. A)

AN-1229 SIMPLE SWITCHER PCB Layout Guidelines (Rev. C)

AN-1149 Layout Guidelines for Switching Power Supplies (Rev. C)

AN-1566 Techniques for Thermal Analysis of Switching Power Supply Designs (Rev. A)

Input and Output Capacitor Selection

Low EMI Layout Made SIMPLE With LM43600/1/2/3 and LM46000/1/2 (Rev. A)

AN-1082 Adjust or Synchronize LM2586/88 Switching Frequency (Rev. B)

AN-643 EMI/RFI Board Design (Rev. B)

The importance of accurate switching frequency and current limit when selecting bu

AN-1889 How to Measure the Loop Transfer Function of Power Supplies (Rev. A)

LM2596 Series