Specification	LM2672MX-ADJ/NOPB

Current - Output	1 A
Frequency - Switching	260 kHz
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]	6.5 V
Voltage - Output (Max)	37 V
Voltage - Output (Min/Fixed)	1.21 V

LM2672 Series

SIMPLE SWITCHER® 6.5V to 40V, 1A Low Component Count Step-Down Regulator

Part	Voltage - Output (Max)	Output Type	Voltage - Input (Min) [Min]	Frequency - Switching	Operating Temperature [Min]	Operating Temperature [Max]	Number of Outputs	Function	Package / Case	Package / Case	Package / Case	Voltage - Output (Min/Fixed)	Supplier Device Package	Current - Output	Topology	Mounting Type	Output Configuration	Output Type	Package / Case [y]	Package / Case [x]
Texas Instruments LM2672N-ADJ/NOPB	37 V	Adjustable	6.5 V	260 kHz	-40 °C	125 ¯C	1	Step-Down	0.3 in	8-DIP	7.62 mm	1.21 V	8-PDIP	1 A	Buck	Through Hole	Positive
Texas Instruments LM2672MX-12			6.5 V	260 kHz	-40 °C	125 ¯C	1	Step-Down		8-SOIC		12 V	8-SOIC	1 A	Buck	Surface Mount	Positive	1.81 mOhm	3.9 mm	0.154 in
Texas Instruments LM2672LD-ADJ	37 V	Adjustable	6.5 V	260 kHz	-40 °C	125 ¯C	1	Step-Down		16-WFDFN Exposed Pad		1.21 V	16-WSON (5x5)	1 A	Buck	Surface Mount	Positive
Texas Instruments LM2672N-12			6.5 V	260 kHz	-40 °C	125 ¯C	1	Step-Down	0.3 in	8-DIP	7.62 mm	12 V	8-PDIP	1 A	Buck	Through Hole	Positive	1.81 mOhm
Texas Instruments LM2672MX-ADJ	37 V	Adjustable	6.5 V	260 kHz	-40 °C	125 ¯C	1	Step-Down		8-SOIC		1.21 V	8-SOIC	1 A	Buck	Surface Mount	Positive		3.9 mm	0.154 in
Texas Instruments LM2672MX-ADJ/NOPB	37 V	Adjustable	6.5 V	260 kHz	-40 °C	125 ¯C	1	Step-Down		8-SOIC		1.21 V	8-SOIC	1 A	Buck	Surface Mount	Positive		3.9 mm	0.154 in
Texas Instruments LM2672MX-5.0			6.5 V	260 kHz	-40 °C	125 ¯C	1	Step-Down		8-SOIC		5 V	8-SOIC	1 A	Buck	Surface Mount	Positive	1.81 mOhm	3.9 mm	0.154 in
Texas Instruments LM2672M-5.0			6.5 V	260 kHz	-40 °C	125 ¯C	1	Step-Down		8-SOIC		5 V	8-SOIC	1 A	Buck	Surface Mount	Positive	1.81 mOhm	3.9 mm	0.154 in
Texas Instruments LM2672M-5.0/NOPB			6.5 V	260 kHz	-40 °C	125 ¯C	1	Step-Down		8-SOIC		5 V	8-SOIC	1 A	Buck	Surface Mount	Positive	1.81 mOhm	3.9 mm	0.154 in
Texas Instruments LM2672LD-3.3/NOPB			6.5 V	260 kHz	-40 °C	125 ¯C	1	Step-Down		16-WFDFN Exposed Pad		3.3 V	16-WSON (5x5)	1 A	Buck	Surface Mount	Positive	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	$

Arrow	N/A	2500	$ 2.61
Digikey	Cut Tape (CT)	1	$ 4.73
		10	$ 4.25
		25	$ 4.02
		100	$ 3.48
		250	$ 3.30
		500	$ 2.96
		1000	$ 2.50
	Digi-Reel®	1	$ 4.73
		10	$ 4.25
		25	$ 4.02
		100	$ 3.48
		250	$ 3.30
		500	$ 2.96
		1000	$ 2.50
	Tape & Reel (TR)	2500	$ 2.37
Texas Instruments	LARGE T&R	1	$ 3.57
		100	$ 3.13
		250	$ 2.19
		1000	$ 1.77

Description

General part information

LM2672 Series

The LM2672 series of regulators are monolithic integrated DC-DC converter built with a LMDMOS process. These regulators provide all the active functions for a step-down (buck) switching regulator, capable of driving a 1-A 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, fixed frequency oscillator, external shutdown, soft-start, and frequency synchronization.

The LM2672 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 its very high efficiency (>90%), the copper traces on the printed-circuit board are the only heat sinking required.

Documents

Technical documentation and resources

LM2672MX-ADJ/NOPB

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LM2672MX-ADJ/NOPB

Deep-Dive with AI

Technical Specifications

LM2672 Series

Pricing

Description

LM2672 Series

Documents

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

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

LM2672 SIMPLE SWITCHER® Power Converter High Efficiency 1-A Step-Down Voltage Regulator with Features datasheet (Rev. L)

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

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

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

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

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

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

Input and Output Capacitor Selection

Advantages of leaded packages in robust industrial designs

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)

Simple Techniques Minimize Cross-Coupling in Distributed Power Systems

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

Semiconductor and IC Package Thermal Metrics (Rev. D)

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

AN-1149 Layout Guidelines for Switching Power Supplies (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)

LM2672 Series