LM2674M-12/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.

DocumentsProduct Change Notice EN AN-1520 A Guide to Board Layout for Best Thermal Resistance for Exposed Packages (Rev. B)+19

LM2674M-12/NOPB

Active

Texas Instruments

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

Deep-Dive with AI

DocumentsProduct Change Notice EN AN-1520 A Guide to Board Layout for Best Thermal Resistance for Exposed Packages (Rev. B)+19

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	$

Arrow	N/A	1	$ 2.86
		10	$ 2.45
		25	$ 2.21
Digikey	Tube	1	$ 4.24
		10	$ 3.81
		95	$ 3.12
		285	$ 2.96
		570	$ 2.66
		1045	$ 2.24
		2565	$ 2.13
Newark	Each	1	$ 5.27
		10	$ 4.95
		25	$ 4.69
		50	$ 4.48
		190	$ 4.30
		285	$ 4.09
		570	$ 4.01
Texas Instruments	TUBE	1	$ 3.20
		100	$ 2.80
		250	$ 1.97
		1000	$ 1.58

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	LM2674M-12/NOPB	LM2674 Series

Current - Output	500 mA	500 mA
Frequency - Switching	260 kHz	260 kHz
Function	Step-Down	Step-Down
Mounting Type	Surface Mount	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	8-SOIC	16-WFDFN Exposed Pad, 8-SOIC, 8-DIP
Package / Case	-	0.3 in
Package / Case	-	7.62 mm
Package / Case [x]	0.154 in	0.154 in
Package / Case [y]	3.9 mm	3.9 mm
Supplier Device Package	8-SOIC	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)	12 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

LM2674M-12/NOPB

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LM2674M-12/NOPB

Deep-Dive with AI

Pricing

Description

LM2674 Series

Documents

Product Change Notice EN

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)

Input and Output Capacitor Selection

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

Simple Techniques Minimize Cross-Coupling in Distributed Power Systems

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

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

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

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

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

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

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

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

Semiconductor and IC Package Thermal Metrics (Rev. D)

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

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

Advantages of leaded packages in robust industrial designs

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

Technical Specifications

LM2674 Series