Integrated Circuits (ICs)

LM2576T-15/LF03

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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.

DocumentsAN-2155 Layout Tips for EMI Reduction in DC/ DC Converters (Rev. A)The importance of accurate switching frequency and current limit when selecting bu +21

Integrated Circuits (ICs)

LM2576T-15/LF03

Active

Texas Instruments

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

Deep-Dive with AI

DocumentsAN-2155 Layout Tips for EMI Reduction in DC/ DC Converters (Rev. A)The importance of accurate switching frequency and current limit when selecting bu +21

Specifications Series Pricing Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	LM2576T-15/LF03

Current - Output	3 A
Frequency - Switching	52 kHz
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 V
Voltage - Output (Min/Fixed)	15 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	$ 3.58
		10	$ 3.22
		45	$ 3.04
		135	$ 2.64
		270	$ 2.50
		540	$ 2.24
		1035	$ 1.89
		2520	$ 1.80
		5040	$ 1.73
Texas Instruments	TUBE	1	$ 2.71
		100	$ 2.37
		250	$ 1.66
		1000	$ 1.34

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

LM2576T-15/LF03

Deep-Dive with AI

LM2576T-15/LF03

Deep-Dive with AI

Technical Specifications

LM2576HV Series

Pricing

Description

LM2576HV Series

Documents

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

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

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

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

Battery Charging

Buck Converters Provide a Battery Charger and System Power

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

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

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

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

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

Switching regulator fundamentals (Rev. C)

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

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

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

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

Input and Output Capacitor Selection

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

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

Advantages of leaded packages in robust industrial designs

Semiconductor and IC Package Thermal Metrics (Rev. D)

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

TO-220 Leadbend Options

LM2576HV Series