Specification	LM2597MX-12/NOPB

Current - Output	500 mA
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	8-SOIC
Package / Case [x]	0.154 in
Package / Case [y]	3.9 mm
Supplier Device Package	8-SOIC
Synchronous Rectifier	False
Topology	Buck
Voltage - Input (Min) [Min]	4.5 V
Voltage - Output (Min/Fixed)	12 V

LM2597HV Series

SIMPLE SWITCHER Power Converter 150 kHz 0.5A Step-Down Voltage Regulator, with Features

Part	Output Configuration	Number of Outputs	Current - Output	Mounting Type	Voltage - Output (Min/Fixed)	Function	Voltage - Input (Max) [Max]	Topology	Voltage - Input (Min) [Min]	Supplier Device Package	Output Type	Package / Case	Package / Case	Package / Case	Operating Temperature [Min]	Operating Temperature [Max]	Package / Case [y]	Package / Case [x]	Output Type	Voltage - Output (Max)
Texas Instruments LM2597HVN-5.0	Positive	1	500 mA	Through Hole	5 V	Step-Down	60 V	Buck	4.5 V	8-PDIP	1.81 mOhm	0.3 in	8-DIP	7.62 mm	-40 °C	125 ¯C
Texas Instruments LM2597HVN-5.0/NOPB	Positive	1	500 mA	Through Hole	5 V	Step-Down	60 V	Buck	4.5 V	8-PDIP	1.81 mOhm	0.3 in	8-DIP	7.62 mm	-40 °C	125 ¯C
Texas Instruments LM2597HVM-5.0/NOPB	Positive	1	500 mA	Surface Mount	5 V	Step-Down	60 V	Buck	4.5 V	8-SOIC	1.81 mOhm		8-SOIC		-40 °C	125 ¯C	3.9 mm	0.154 in
Texas Instruments LM2597MX-ADJ/NOPB	Positive	1	500 mA	Surface Mount	1.2 V	Step-Down		Buck	4.5 V	8-SOIC			8-SOIC		-40 °C	125 ¯C	3.9 mm	0.154 in	Adjustable	37 V
Texas Instruments LM2597HVN-ADJ/NOPB	Positive	1	500 mA	Through Hole	1.2 V	Step-Down	60 V	Buck	4.5 V	8-PDIP		0.3 in	8-DIP	7.62 mm	-40 °C	125 ¯C			Adjustable	57 V
Texas Instruments LM2597HVN-3.3/NOPB	Positive	1	500 mA	Through Hole	3.3 V	Step-Down	60 V	Buck	4.5 V	8-PDIP	1.81 mOhm	0.3 in	8-DIP	7.62 mm	-40 °C	125 ¯C
Texas Instruments LM2597N-3.3	Positive	1	500 mA	Through Hole	3.3 V	Step-Down		Buck	4.5 V	8-PDIP	1.81 mOhm	0.3 in	8-DIP	7.62 mm	-40 °C	125 ¯C
Texas Instruments LM2597HVMX-ADJ	Positive	1	500 mA	Surface Mount	1.2 V	Step-Down	60 V	Buck	4.5 V	8-SOIC			8-SOIC		-40 °C	125 ¯C	3.9 mm	0.154 in	Adjustable	57 V
Texas Instruments LM2597HVM-5.0	Positive	1	500 mA	Surface Mount	5 V	Step-Down	60 V	Buck	4.5 V	8-SOIC	1.81 mOhm		8-SOIC		-40 °C	125 ¯C	3.9 mm	0.154 in
Texas Instruments LM2597MX-12/NOPB	Positive	1	500 mA	Surface Mount	12 V	Step-Down		Buck	4.5 V	8-SOIC	1.81 mOhm		8-SOIC		-40 °C	125 ¯C	3.9 mm	0.154 in

Pricing

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

Distributor	Package	Quantity	$

Digikey	Cut Tape (CT)	1	$ 4.42
	Digi-Reel®	1	$ 4.42
	Tape & Reel (TR)	2500	$ 2.22
LCSC	Piece	1	$ 5.43
		200	$ 2.10
		500	$ 2.03
		1000	$ 1.99
Texas Instruments	LARGE T&R	1	$ 3.33
		100	$ 2.92
		250	$ 2.05
		1000	$ 1.65

Description

General part information

LM2597HV Series

The LM2597xx 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, and an adjustable output version, and are packaged in an 8-pin PDIP and an 8-pin surface-mount package.

This series of switching regulators is similar to the LM2594 series, with additional supervisory and performance features added.

Requiring a minimum number of external components, these regulators are simple to use and include internal frequency compensation, improved line and load specifications, fixed-frequency oscillator,Shutdown/Soft-start, error flag delay, and error flag output.

Documents

Technical documentation and resources

LM2597MX-12/NOPB

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LM2597MX-12/NOPB

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Technical Specifications

LM2597HV Series

Pricing

Description

LM2597HV Series

Documents

Datasheet

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

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

Simple Techniques Minimize Cross-Coupling in Distributed Power Systems

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

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

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

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

Input and Output Capacitor Selection

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

Semiconductor and IC Package Thermal Metrics (Rev. D)

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)

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

Advantages of leaded packages in robust industrial designs

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

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

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

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

LM2597HV Series