Integrated Circuits (ICs)

LM2576S-3.3/NOPB

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

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Search across all available documentation for this part.

DocumentsThe importance of accurate switching frequency and current limit when selecting bu Semiconductor and IC Package Thermal Metrics (Rev. D)+20

Integrated Circuits (ICs)

LM2576S-3.3/NOPB

Active

Texas Instruments

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

Deep-Dive with AI

DocumentsThe importance of accurate switching frequency and current limit when selecting bu Semiconductor and IC Package Thermal Metrics (Rev. D)+20

Specifications Series Pricing Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	LM2576S-3.3/NOPB

Current - Output	3 A
Frequency - Switching	52 kHz
Function	Step-Down
Mounting Type	Surface Mount
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-263-6, TO-263BA, D2PAK (5 Leads + Tab)
Supplier Device Package	TO-263 (DDPAK-5)
Synchronous Rectifier	False
Topology	Buck
Voltage - Input (Min) [Min]	4 V
Voltage - Output (Min/Fixed)	3.3 V

LM2576HV Series

SIMPLE SWITCHER® 4V to 60V, 3A Low Component Count Step-Down Regulator

Part	Function	Package / Case	Output Type	Operating Temperature [Min]	Operating Temperature [Max]	Voltage - Output (Min/Fixed)	Number of Outputs	Voltage - Input (Min) [Min]	Output Configuration	Voltage - Input (Max) [Max]	Current - Output	Frequency - Switching	Topology	Mounting Type	Supplier Device Package	Voltage - Output (Max)	Output Type
Texas Instruments LM2576HVSX-12	Step-Down	D2PAK (5 Leads + Tab) TO-263-6 TO-263BA	1.81 mOhm	-40 °C	125 ¯C	12 V	1	4 V	Positive	60 V	3 A	52 kHz	Buck	Surface Mount	TO-263 (DDPAK-5)
Texas Instruments LM2576HVT-15	Step-Down	TO-220-5	1.81 mOhm	-40 °C	125 ¯C	15 V	1	4 V	Positive	60 V	3 A	52 kHz	Buck	Through Hole	TO-220-5
Texas Instruments LM2576HVT-ADJ	Step-Down	TO-220-5		-40 °C	125 ¯C	1.23 V	1	4 V	Positive	60 V	3 A	52 kHz	Buck	Through Hole	TO-220-5	57 V	Adjustable
Texas Instruments LM2576HVT-3.3/NOPB	Step-Down	TO-220-5	1.81 mOhm	-40 °C	125 ¯C	3.3 V	1	4 V	Positive	60 V	3 A	52 kHz	Buck	Through Hole	TO-220-5
Texas Instruments LM2576HVT-5.0/NOPB	Step-Down	TO-220-5	1.81 mOhm	-40 °C	125 ¯C	5 V	1	4 V	Positive	60 V	3 A	52 kHz	Buck	Through Hole	TO-220-5
Texas Instruments LM2576HVSX-15	Step-Down	D2PAK (5 Leads + Tab) TO-263-6 TO-263BA	1.81 mOhm	-40 °C	125 ¯C	15 V	1	4 V	Positive	60 V	3 A	52 kHz	Buck	Surface Mount	TO-263 (DDPAK-5)
Texas Instruments LM2576T-ADJ/LF02	Step-Down	TO-220-5 Formed Leads		-40 °C	125 ¯C	1.23 V	1	4 V	Positive		3 A	52 kHz	Buck	Through Hole	TO-220-5	37 V	Adjustable
Texas Instruments LM2576S-3.3/NOPB	Step-Down	D2PAK (5 Leads + Tab) TO-263-6 TO-263BA	1.81 mOhm	-40 °C	125 ¯C	3.3 V	1	4 V	Positive		3 A	52 kHz	Buck	Surface Mount	TO-263 (DDPAK-5)
Texas Instruments LM2576T-15/LF03	Step-Down	TO-220-5 Formed Leads	1.81 mOhm	-40 °C	125 ¯C	15 V	1	4 V	Positive		3 A	52 kHz	Buck	Through Hole	TO-220-5
Texas Instruments LM2576HVS-ADJ/NOPB	Step-Down	D2PAK (5 Leads + Tab) TO-263-6 TO-263BA		-40 °C	125 ¯C	1.23 V	1	4 V	Positive	60 V	3 A	52 kHz	Buck	Surface Mount	TO-263 (DDPAK-5)	57 V	Adjustable

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	$ 4.66
		10	$ 4.18
		45	$ 3.96
		135	$ 3.43
		270	$ 3.25
		540	$ 2.92
		1035	$ 2.46
		2520	$ 2.34
Newark	Each	1	$ 5.79
		10	$ 5.45
		25	$ 5.15
		90	$ 4.92
		135	$ 4.72
		270	$ 4.48
		540	$ 4.41
Texas Instruments	TUBE	1	$ 3.52
		100	$ 3.08
		250	$ 2.16
		1000	$ 1.74

Description

General part information

LM2576HV Series

The LM2576 series of regulators are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator, capable of driving 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, 15 V, and an adjustable output version.

Requiring a minimum number of external components, these regulators are simple to use and include fault protection and a fixed-frequency oscillator.

The LM2576 series offers a high-efficiency replacement for popular three-terminal linear regulators. It substantially reduces the size of the heat sink, and in some cases no heat sink is required.

Documents

Technical documentation and resources

LM2576S-3.3/NOPB

Deep-Dive with AI

LM2576S-3.3/NOPB

Deep-Dive with AI

Technical Specifications

LM2576HV Series

Pricing

Description

LM2576HV Series

Documents

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

Semiconductor and IC Package Thermal Metrics (Rev. D)

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

AN-776 20-W SIMPLE SWITCHER Forward Converter (Rev. A)

Input and Output Capacitor Selection

High-Efficiency 3A Battery Chargers Use LM2576 Regulators (Rev. B)

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

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

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

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

Advantages of leaded packages in robust industrial designs

Battery Charging

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

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

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

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

Buck Converters Provide a Battery Charger and System Power

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

Switching regulator fundamentals (Rev. C)

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

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

LM2576xx Series SIMPLE SWITCHER Power Converter 3-A Step-Down Voltage Regulator datasheet (Rev. G)

LM2576HV Series