Integrated Circuits (ICs)

LM2574HVM-ADJ/NOPB

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SIMPLE SWITCHER 0.5A STEP-DOWN VOLTAGE REGULATOR

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Search across all available documentation for this part.

DocumentsAN-1149 Layout Guidelines for Switching Power Supplies (Rev. C)AN-1566 Techniques for Thermal Analysis of Switching Power Supply Designs (Rev. A)+17

Integrated Circuits (ICs)

LM2574HVM-ADJ/NOPB

Active

Texas Instruments

SIMPLE SWITCHER 0.5A STEP-DOWN VOLTAGE REGULATOR

Deep-Dive with AI

DocumentsAN-1149 Layout Guidelines for Switching Power Supplies (Rev. C)AN-1566 Techniques for Thermal Analysis of Switching Power Supply Designs (Rev. A)+17

Specifications Series Pricing Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	LM2574HVM-ADJ/NOPB

Current - Output	500 mA
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	Adjustable
Package / Case	0.295 in
Package / Case	14-SOIC
Package / Case	7.5 mm
Synchronous Rectifier	False
Topology	Buck
Voltage - Input (Max) [Max]	60 V
Voltage - Input (Min) [Min]	4 V
Voltage - Output (Max)	37 V
Voltage - Output (Min/Fixed)	1.23 V

LM2574HV Series

8V to 40V, 500mA SIMPLE SWITCHER® buck converter with 4 external components

Part	Mounting Type	Number of Outputs	Operating Temperature [Min]	Operating Temperature [Max]	Package / Case	Package / Case	Package / Case	Voltage - Input (Min) [Min]	Output Type	Current - Output	Voltage - Output (Max)	Voltage - Input (Max) [Max]	Function	Output Configuration	Voltage - Output (Min/Fixed)	Frequency - Switching	Topology	Output Type	Supplier Device Package
Texas Instruments LM2574HVMX-ADJ	Surface Mount	1	-40 °C	125 ¯C	0.295 in	14-SOIC	7.5 mm	4 V	Adjustable	500 mA	37 V	60 V	Step-Down	Positive	1.23 V	52 kHz	Buck
Texas Instruments LM2574MX-ADJ	Surface Mount	1	-40 °C	125 ¯C	0.295 in	14-SOIC	7.5 mm	4 V	Adjustable	500 mA	37 V		Step-Down	Positive	1.23 V	52 kHz	Buck
Texas Instruments LM2574HVM-ADJ/NOPB	Surface Mount	1	-40 °C	125 ¯C	0.295 in	14-SOIC	7.5 mm	4 V	Adjustable	500 mA	37 V	60 V	Step-Down	Positive	1.23 V	52 kHz	Buck
Texas Instruments LM2574MX-12	Surface Mount	1	-40 °C	125 ¯C	0.295 in	14-SOIC	7.5 mm	4 V		500 mA			Step-Down	Positive	12 V	52 kHz	Buck	1.81 mOhm
Texas Instruments LM2574MX-12/NOPB	Surface Mount	1	-40 °C	125 ¯C	0.295 in	14-SOIC	7.5 mm	4 V		500 mA			Step-Down	Positive	12 V	52 kHz	Buck	1.81 mOhm
Texas Instruments LM2574HVN-3.3/NOPB	Through Hole	1	-40 °C	125 ¯C	0.3 in	8-DIP	7.62 mm	4 V		500 mA		60 V	Step-Down	Positive	3.3 V	52 kHz	Buck	1.81 mOhm	8-PDIP
Texas Instruments LM2574M-5.0	Surface Mount	1	-40 °C	125 ¯C	0.295 in	14-SOIC	7.5 mm	4 V		500 mA			Step-Down	Positive	5 V	52 kHz	Buck	1.81 mOhm
Texas Instruments LM2574M-12	Surface Mount	1	-40 °C	125 ¯C	0.295 in	14-SOIC	7.5 mm	4 V		500 mA			Step-Down	Positive	12 V	52 kHz	Buck	1.81 mOhm
Texas Instruments LM2574HVN-ADJ	Through Hole	1	-40 °C	125 ¯C	0.3 in	8-DIP	7.62 mm	4 V	Adjustable	500 mA	37 V	60 V	Step-Down	Positive	1.23 V	52 kHz	Buck		8-PDIP
Texas Instruments LM2574N-5.0/NOPB	Through Hole	1	-40 °C	125 ¯C	0.3 in	8-DIP	7.62 mm	4 V		500 mA			Step-Down	Positive	5 V	52 kHz	Buck	1.81 mOhm	8-PDIP

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	$ 3.60
		10	$ 3.23
		50	$ 3.06
		100	$ 2.65
		250	$ 2.51
		500	$ 2.39
Texas Instruments	TUBE	1	$ 3.87
		100	$ 3.39
		250	$ 2.38
		1000	$ 1.91

Description

General part information

LM2574HV Series

The LM2574xx series of regulators are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator, capable of driving a 0.5-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 internal frequency compensation and a fixed-frequency oscillator.

The LM2574xx series offers a high-efficiency replacement for popular three-terminal linear regulators. Because of its high efficiency, the copper traces on the printed-circuit board (PCB) are normally the only heat sinking needed.

Documents

Technical documentation and resources

LM2574HVM-ADJ/NOPB

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LM2574HVM-ADJ/NOPB

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Technical Specifications

LM2574HV Series

Pricing

Description

LM2574HV Series

Documents

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

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

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

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

Semiconductor and IC Package Thermal Metrics (Rev. D)

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

Advantages of leaded packages in robust industrial designs

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

Cap Drop Offline Supply for E-Meters

Cost-Effective Transformerless Offline Supply for Light Load Applications (Rev. A)

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

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

Input and Output Capacitor Selection

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

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

LM2574/LM2574HV SIMPLE SWITCHER® 0.5-A Step-Down Voltage Regulator datasheet (Rev. F)

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

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

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

LM2574HV Series