Specification	LM2597MX-ADJ/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	Adjustable
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 (Max)	37 V
Voltage - Output (Min/Fixed)	1.2 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
		10	$ 3.97
		25	$ 3.75
		100	$ 3.25
		250	$ 3.08
		500	$ 2.77
		1000	$ 2.33
	Digi-Reel®	1	$ 4.42
		10	$ 3.97
		25	$ 3.75
		100	$ 3.25
		250	$ 3.08
		500	$ 2.77
		1000	$ 2.33
	Tape & Reel (TR)	2500	$ 2.22
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-ADJ/NOPB

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LM2597MX-ADJ/NOPB

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Technical Specifications

LM2597HV Series

Pricing

Description

LM2597HV Series

Documents

Datasheet

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

Simple Techniques Minimize Cross-Coupling in Distributed Power Systems

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

Advantages of leaded packages in robust industrial designs

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

Semiconductor and IC Package Thermal Metrics (Rev. D)

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

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

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

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

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

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)

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

Input and Output Capacitor Selection

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)

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

LM2597HV Series