LM2674N-5.0/NOPB

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Texas Instruments

SIMPLE SWITCHER® 40V, 500MA LOW COMPONENT COUNT STEP-DOWN REGULATOR

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Search across all available documentation for this part.

DocumentsAN-1566 Techniques for Thermal Analysis of Switching Power Supply Designs (Rev. A)Low EMI Layout Made SIMPLE With LM43600/1/2/3 and LM46000/1/2 (Rev. A)+18

LM2674N-5.0/NOPB

Active

Texas Instruments

SIMPLE SWITCHER® 40V, 500MA LOW COMPONENT COUNT STEP-DOWN REGULATOR

Deep-Dive with AI

DocumentsAN-1566 Techniques for Thermal Analysis of Switching Power Supply Designs (Rev. A)Low EMI Layout Made SIMPLE With LM43600/1/2/3 and LM46000/1/2 (Rev. A)+18

Specifications Pricing Series Description Documents

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	$ 4.06
		10	$ 3.65
		40	$ 3.45
		120	$ 2.99
		280	$ 2.84
		520	$ 2.55
		1000	$ 2.15
		2520	$ 2.04
		5000	$ 1.96
Texas Instruments	TUBE	1	$ 3.33
		100	$ 2.92
		250	$ 2.05
		1000	$ 1.65

Description

General part information

LM2674 Series

The LM2674 series of regulators are monolithic integrated circuits built with a LMDMOS process. These regulators provide all the active functions for a step-down (buck) switching regulator, capable of driving a 500-mA load current 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.

Requiring a minimum number of external components, these regulators are simple to use and include patented internal frequency compensation and a fixed frequency oscillator.

The LM2674 series operates at a switching frequency of 260 kHz, thus allowing smaller sized filter components than what is required with lower frequency switching regulators. Because of very high efficiency (> 90%), the copper traces on the printed-circuit board are the only heat sinking required.

Documents

Technical documentation and resources

Specification	LM2674N-5.0/NOPB	LM2674 Series

Current - Output	500 mA	500 mA
Frequency - Switching	260 kHz	260 kHz
Function	Step-Down	Step-Down
Mounting Type	Through Hole	Surface Mount, Through Hole
Number of Outputs	1	1
Operating Temperature [Max]	125 ¯C	125 ¯C
Operating Temperature [Min]	-40 °C	-40 °C
Output Configuration	Positive	Positive
Output Type	1.81 mOhm	1.81 mOhm
Output Type	-	Adjustable
Package / Case	0.3 in	0.3 in
Package / Case	8-DIP	16-WFDFN Exposed Pad, 8-SOIC, 8-DIP
Package / Case	7.62 mm	7.62 mm
Package / Case	-	3.9 mm
Package / Case	-	0.154 in
Supplier Device Package	8-PDIP	16-WSON (5x5), 8-SOIC, 8-PDIP
Synchronous Rectifier	False	False
Topology	Buck	Buck
Voltage - Input (Min) [Min]	6.5 V	6.5 V
Voltage - Output (Max)	-	37 V
Voltage - Output (Min/Fixed)	5 V	1.2 - 12 V

Part	Current - Output	Output Configuration	Frequency - Switching	Voltage - Output (Min/Fixed)	Supplier Device Package	Output Type	Topology	Operating Temperature [Min]	Operating Temperature [Max]	Mounting Type	Function	Voltage - Input (Min) [Min]	Package / Case	Number of Outputs	Voltage - Output (Max)	Package / Case [y]	Package / Case [x]	Output Type	Package / Case	Package / Case
Texas Instruments LM2674LD-5.0/NOPB	500 mA	Positive	260 kHz	5 V	16-WSON (5x5)	1.81 mOhm	Buck	-40 °C	125 ¯C	Surface Mount	Step-Down	6.5 V	16-WFDFN Exposed Pad	1
Texas Instruments LM2674M-ADJ/NOPB	500 mA	Positive	260 kHz	1.2 V	8-SOIC		Buck	-40 °C	125 ¯C	Surface Mount	Step-Down	6.5 V	8-SOIC	1	37 V	3.9 mm	0.154 in	Adjustable
Texas Instruments LM2674N-5.0/NOPB	500 mA	Positive	260 kHz	5 V	8-PDIP	1.81 mOhm	Buck	-40 °C	125 ¯C	Through Hole	Step-Down	6.5 V	8-DIP	1					0.3 in	7.62 mm
Texas Instruments LM2674M-12	500 mA	Positive	260 kHz	12 V	8-SOIC	1.81 mOhm	Buck	-40 °C	125 ¯C	Surface Mount	Step-Down	6.5 V	8-SOIC	1		3.9 mm	0.154 in
Texas Instruments LM2674M-3.3/NOPB	500 mA	Positive	260 kHz	3.3 V	8-SOIC	1.81 mOhm	Buck	-40 °C	125 ¯C	Surface Mount	Step-Down	6.5 V	8-SOIC	1		3.9 mm	0.154 in
Texas Instruments LM2674M-12/NOPB	500 mA	Positive	260 kHz	12 V	8-SOIC	1.81 mOhm	Buck	-40 °C	125 ¯C	Surface Mount	Step-Down	6.5 V	8-SOIC	1		3.9 mm	0.154 in
Texas Instruments LM2674LD-3.3	500 mA	Positive	260 kHz	3.3 V	16-WSON (5x5)	1.81 mOhm	Buck	-40 °C	125 ¯C	Surface Mount	Step-Down	6.5 V	16-WFDFN Exposed Pad	1
Texas Instruments LM2674LDX-5.0	500 mA	Positive	260 kHz	5 V	16-WSON (5x5)	1.81 mOhm	Buck	-40 °C	125 ¯C	Surface Mount	Step-Down	6.5 V	16-WFDFN Exposed Pad	1
Texas Instruments LM2674LD-12/NOPB	500 mA	Positive	260 kHz	12 V	16-WSON (5x5)	1.81 mOhm	Buck	-40 °C	125 ¯C	Surface Mount	Step-Down	6.5 V	16-WFDFN Exposed Pad	1
Texas Instruments LM2674N-12/NOPB	500 mA	Positive	260 kHz	12 V	8-PDIP	1.81 mOhm	Buck	-40 °C	125 ¯C	Through Hole	Step-Down	6.5 V	8-DIP	1					0.3 in	7.62 mm

LM2674N-5.0/NOPB

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LM2674N-5.0/NOPB

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Pricing

Description

LM2674 Series

Documents

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

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

Semiconductor and IC Package Thermal Metrics (Rev. D)

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

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

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

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

LM2674 SIMPLE SWITCHER® Power Converter, High-Efficiency, 500-mA, Step-Down Voltage Regulator datasheet (Rev. H)

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

AN-1Positive-to-Negative Buck-Boost Converter Using LM267x SIMPLE SWITCHER (Rev. E)

Simple Techniques Minimize Cross-Coupling in Distributed Power Systems

AN-1187 Leadless Leadframe Package (LLP) (Rev. R)

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

Input and Output Capacitor Selection

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

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

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

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

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

Advantages of leaded packages in robust industrial designs

Technical Specifications

LM2674 Series