Integrated Circuits (ICs)

LM2598S-3.3/NOPB

Active

CONV DC-DC 4.5V TO 40V INV/STEP DOWN SINGLE-OUT 3.3V 1A 8-PIN(7+TAB) TO-263 TUBE

Deep-Dive with AI

Search across all available documentation for this part.

DocumentsAN-643 EMI/RFI Board Design (Rev. B)LM2598 SIMPLE SWITCHER® Power Converter 150-kHz 1-A Step-Down Voltage Regulator, With Features datasheet (Rev. D)+17

Integrated Circuits (ICs)

LM2598S-3.3/NOPB

Active

Texas Instruments

CONV DC-DC 4.5V TO 40V INV/STEP DOWN SINGLE-OUT 3.3V 1A 8-PIN(7+TAB) TO-263 TUBE

Deep-Dive with AI

DocumentsAN-643 EMI/RFI Board Design (Rev. B)LM2598 SIMPLE SWITCHER® Power Converter 150-kHz 1-A Step-Down Voltage Regulator, With Features datasheet (Rev. D)+17

Specifications Series Pricing Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	LM2598S-3.3/NOPB

Current - Output	1 A
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	D2PAK (7 Leads + Tab), TO-263-8, TO-263CA
Supplier Device Package	TO-263 (DDPAK-7)
Synchronous Rectifier	False
Topology	Buck
Voltage - Input (Min) [Min]	4.5 V
Voltage - Output (Min/Fixed)	3.3 V

LM2598 Series

4.5V to 40V, 1A SIMPLE SWITCHER® buck converter

Part	Output Configuration	Output Type	Operating Temperature [Min]	Operating Temperature [Max]	Topology	Mounting Type	Number of Outputs	Voltage - Output (Max)	Function	Package / Case	Voltage - Input (Min) [Min]	Current - Output	Supplier Device Package	Voltage - Output (Min/Fixed)	Output Type
Texas Instruments LM2598S-ADJ/NOPB	Positive	Adjustable	-40 °C	125 ¯C	Buck	Surface Mount	1	37 V	Step-Down	D2PAK (7 Leads + Tab) TO-263-8 TO-263CA	4.5 V	1 A	TO-263 (DDPAK-7)	1.2 V
Texas Instruments LM2598SX-5.0	Positive		-40 °C	125 ¯C	Buck	Surface Mount	1		Step-Down	D2PAK (7 Leads + Tab) TO-263-8 TO-263CA	4.5 V	1 A	TO-263 (DDPAK-7)	5 V	1.81 mOhm
Texas Instruments LM2598T-5.0	Positive		-40 °C	125 ¯C	Buck	Through Hole	1		Step-Down	TO-220-7 Formed Leads	4.5 V	1 A	TO-220-7	5 V	1.81 mOhm
Texas Instruments LM2598SX-3.3/NOPB	Positive		-40 °C	125 ¯C	Buck	Surface Mount	1		Step-Down	D2PAK (7 Leads + Tab) TO-263-8 TO-263CA	4.5 V	1 A	TO-263 (DDPAK-7)	3.3 V	1.81 mOhm
Texas Instruments LM2598T-12/NOPB	Positive		-40 °C	125 ¯C	Buck	Through Hole	1		Step-Down	TO-220-7 Formed Leads	4.5 V	1 A	TO-220-7	12 V	1.81 mOhm
Texas Instruments LM2598SX-ADJ	Positive	Adjustable	-40 °C	125 ¯C	Buck	Surface Mount	1	37 V	Step-Down	D2PAK (7 Leads + Tab) TO-263-8 TO-263CA	4.5 V	1 A	TO-263 (DDPAK-7)	1.2 V
Texas Instruments LM2598T-3.3/NOPB	Positive		-40 °C	125 ¯C	Buck	Through Hole	1		Step-Down	TO-220-7 Formed Leads	4.5 V	1 A	TO-220-7	3.3 V	1.81 mOhm
Texas Instruments LM2598S-3.3/NOPB	Positive		-40 °C	125 ¯C	Buck	Surface Mount	1		Step-Down	D2PAK (7 Leads + Tab) TO-263-8 TO-263CA	4.5 V	1 A	TO-263 (DDPAK-7)	3.3 V	1.81 mOhm
Texas Instruments LM2598SX-12/NOPB	Positive		-40 °C	125 ¯C	Buck	Surface Mount	1		Step-Down	D2PAK (7 Leads + Tab) TO-263-8 TO-263CA	4.5 V	1 A	TO-263 (DDPAK-7)	12 V	1.81 mOhm
Texas Instruments LM2598SX-12	Positive		-40 °C	125 ¯C	Buck	Surface Mount	1		Step-Down	D2PAK (7 Leads + Tab) TO-263-8 TO-263CA	4.5 V	1 A	TO-263 (DDPAK-7)	12 V	1.81 mOhm

Pricing

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

Distributor	Package	Quantity	$

Digikey	Bulk	126	$ 2.38
	Tube	1	$ 4.42
		10	$ 3.97
		45	$ 3.75
		135	$ 3.25
		270	$ 3.09
		540	$ 2.77
		1035	$ 2.34
		2520	$ 2.22
Texas Instruments	TUBE	1	$ 3.34
		100	$ 2.92
		250	$ 2.05
		1000	$ 1.65

Description

General part information

LM2598 Series

The LM2598 series of regulators are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator, capable of driving a 1-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.

The LM2598 is a member of the LM259x family.

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

LM2598S-3.3/NOPB

Deep-Dive with AI

LM2598S-3.3/NOPB

Deep-Dive with AI

Technical Specifications

LM2598 Series

Pricing

Description

LM2598 Series

Documents

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

LM2598 SIMPLE SWITCHER® Power Converter 150-kHz 1-A Step-Down Voltage Regulator, With Features datasheet (Rev. D)

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

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

Semiconductor and IC Package Thermal Metrics (Rev. D)

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

Input and Output Capacitor Selection

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

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

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

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

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

Advantages of leaded packages in robust industrial designs

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

Simple Techniques Minimize Cross-Coupling in Distributed Power Systems

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

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

LM2598 Series