LM2671 Buck Converter overview

Description

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LM2671 is a 40.00 V non-sync Buck Converter from with 0.50 A output current. The maximum 40.00 V input voltage can be regulated down into a 1.21 V to 37.00 V output voltage.

It requires are a typical inductor size of 100.00 µH, a typical external component count of 7 and achieves a peak efficiency of 96 %. Further LM2671 characteristics are a fixed 260 kHz switching frequency and 3 available package option(s): WSON-16 SOIC-8 PDIP-8 .

For the LM2671 replacement search, please select a main parameter tolerance value and adjust the checkboxes for feature match. The product counter within the button shows the number of available equivalents and a click on the replacement button shows all possible replacements within a parametric overview.

ParameterValueReplacement
Search Filter
V-IN min. 6.50 V
V-IN max. 40.00 V
I-OUT? 0.50 A
V-OUT min. 1.21 V
V-OUT max. 37.00 V
V-OUT adjustable V
V-OUT programmable no
sync/non-sync non-sync
Frequency typ. 260 kHz
Frequency fixed
Frequency selectable
ext.clock sync. yes
Frequency adj./ ext.clock min. 280 kHz
Frequency adj./ ext.clock max 400 kHz
Softstart yes
Softstart adjustable yes
Tracking no
PG/Power OK no
Quiescent current max. 3600 µA
Operating min.
Operating max.
Junction min. -40 °C
Junction max. 125 °C
thermal shutdown typ.
Inductor size typ. 100.00 µH
Inductor suggested by Würth Elektronik
Automotive AEC-Q100 no
Light-Load-Mode no
Topology Buck
Peak Efficiency 96 %
Component count min. 7
current limit adjustable no
Nr.of packages 3
CSP
SC70
SOT
MSOP
QFN/DFN WSON-16
SO/SOIC SOIC-8
SOP
DIP PDIP-8
TO
DDPAK

LM2671 Datasheet

Link to the most up-to-date LM2671 datasheet and the product page for EVM, tools and support information.

LM2671

LM2671 Sample stock and distributor price breaks

LM2671 prices and online available distributors.

OEMSecrets.com
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Available Distributors with stock: 0

no online Distributor with LM2671 stock available

Available Distributors with stock: 0

no online Distributor with LM2671 stock available

List of equivalents and alternatives

The following DC/DC Buck Converter are similar to LM2671. Optional, compare LM2671 side-by-side with other Buck Converter via the Comparison function.

Variation Compare Product Manufacturer Package
0% MAX15014 MAX15014 product overviewMAX15014 product overview Maxim TQFN-36
0% MAX15015 MAX15015 product overviewMAX15015 product overview Maxim TQFN-36
0% MAX15016 MAX15016 product overviewMAX15016 product overview Maxim TQFN-36
0% MAX15017 MAX15017 product overviewMAX15017 product overview Maxim TQFN-36
0% MAX5080 MAX5080 product overviewMAX5080 product overview Maxim TQFN-32
0% MAX5081 MAX5081 product overviewMAX5081 product overview Maxim TQFN-16
0% MAX5096 MAX5096 product overviewMAX5096 product overview Maxim TSSOP-EP-20, TQFN-16
0% MAX5097 MAX5097 product overviewMAX5097 product overview Maxim TSSOP-EP-20, TQFN-16
0% LM2672 LM2672 product overviewLM2672 product overview Texas Instruments PDIP-8, SOIC-8, WSON-16
25% LT3437 LT3437 product overviewLT3437 product overview Linear Technology TSSOP-16, DFN-10

Inductor suggestions

Below you can find matching inductors from Wuerth Elektronik calculated on the maximum parameters of LM2671.

V-IN max. 40 V, I-OUT 0.5 A, V-OUT min. 1.21 V, Frequency typ. 260 kHz
Order Code Spec L (µH) IR (A) ISAT (A) RDC (mΩ) L x W x H (mm)
744025220 22.0 0.5 0.8 525.00 2.8 x 2.8 x 3
74404032220 22.0 0.6 0.6 450.00 3 x 3 x 1.5
74404041330 33.0 0.7 0.6 628.00 4 x 4 x 1.2
74404042220 22.0 0.7 1.1 290.00 4 x 4 x 1.8
74404042330 33.0 0.7 0.9 460.00 4 x 4 x 1.8
74404052330 33.0 1.0 1.1 387.00 5 x 5 x 2
744042220 22.0 0.9 0.6 280.00 4.8 x 4.8 x 2
744043220 22.0 0.9 0.7 160.00 4.8 x 4.8 x 3
744043270 27.0 0.9 0.6 170.00 4.8 x 4.8 x 3
744045220 22.0 0.6 1.0 560.00 4.5 x 3.2 x 2.9
744052220 22.0 0.8 0.9 240.00 5.8 x 5.8 x 2
744052270 27.0 0.8 0.8 250.00 5.8 x 5.8 x 2
744053220 22.0 1.2 0.9 100.00 5.8 x 5.8 x 3
744053270 27.0 1.1 0.8 135.00 5.8 x 5.8 x 3
744053330 33.0 0.9 0.8 180.00 5.8 x 5.8 x 3
744062220 22.0 1.2 1.0 100.00 6.8 x 6.8 x 2.5
744062330 33.0 0.9 0.8 150.00 6.8 x 6.8 x 2.5
7440680220 22.0 0.9 0.7 350.00 8 x 8 x 1.2
7440690220 22.0 1.0 0.9 272.00 8 x 8 x 1.5
7440700220 22.0 1.3 1.0 166.00 8 x 8 x 2
74408941220 22.0 0.7 1.1 549.00 4.8 x 4.8 x 2.1
74408942330 33.0 0.8 1.1 424.00 4.8 x 4.8 x 3.1
74408943330 33.0 0.9 1.2 259.00 4.8 x 4.8 x 4.1
744773127 27.0 0.9 1.0 328.00 4 x 4.5 x 3.5
744773133 33.0 0.9 0.9 370.00 4 x 4.5 x 3.5
744778133 33.0 1.2 1.2 153.00 7.3 x 7.3 x 3.4
7447785122 22.0 1.4 1.1 210.00 5.9 x 6.2 x 3.3
7447789133 33.0 1.2 1.2 153.00 7.3 x 7.3 x 3.5
784773127 27.0 0.9 1.0 328.00 4 x 4.5 x 3.5
784773133 33.0 0.9 0.9 370.00 4 x 4.5 x 3.5
784774133 33.0 1.1 1.2 150.00 5.2 x 5.8 x 4.85
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