LM22673 Buck Converter overview

Description

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LM22673 is a 42.00 V non-sync Buck Converter from with 3.00 A output current. The maximum 42.00 V input voltage can be regulated down into a 1.29 V to 37.00 V output voltage.

It requires are a typical inductor size of 8.20 µH, a typical external component count of 7 and achieves a peak efficiency of 92 %. Further LM22673 characteristics are a fixed 500 kHz switching frequency and 2 available package option(s): SO-8 TO263-7 .

For the LM22673 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. 4.50 V
V-IN max. 42.00 V
I-OUT? 3.00 A
V-OUT min. 1.29 V
V-OUT max. 37.00 V
V-OUT adjustable V
V-OUT programmable no
sync/non-sync non-sync
Frequency typ. 500 kHz
Frequency fixed
Frequency selectable
ext.clock sync. no
Frequency adj./ ext.clock min.
Frequency adj./ ext.clock max
Softstart yes
Softstart adjustable yes
Tracking no
PG/Power OK no
Quiescent current max. 6000 µA
Operating min.
Operating max.
Junction min. -40 °C
Junction max. 125 °C
thermal shutdown typ. 150 °C
Inductor size typ. 8.20 µH
Inductor suggested by Würth Elektronik
Automotive AEC-Q100 no
Light-Load-Mode no
Topology Buck
Peak Efficiency 92 %
Component count min. 7
current limit adjustable yes
Nr.of packages 2
CSP
SC70
SOT
MSOP
QFN/DFN
SO/SOIC SO-8
SOP
DIP
TO
DDPAK TO263-7

LM22673 Datasheet

Link to the most up-to-date LM22673 datasheet and the product page for EVM, tools and support information.

LM22673

LM22673 Sample stock and distributor price breaks

LM22673 prices and online available distributors.

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Available Distributors with stock: 0

no online Distributor with LM22673 stock available

Available Distributors with stock: 0

no online Distributor with LM22673 stock available

List of equivalents and alternatives

The following DC/DC Buck Converter are similar to LM22673. Optional, compare LM22673 side-by-side with other Buck Converter via the Comparison function.

Variation Compare Product Manufacturer Package
0% LM22679 LM22679 product overviewLM22679 product overview Texas Instruments TO263-7
0% LM2673 LM2673 product overviewLM2673 product overview Texas Instruments DDPAK-7, TO-220-7, VSON-14
0% LM2679 LM2679 product overviewLM2679 product overview Texas Instruments DDPAK-7, TO-220-7, VSON-14

Inductor suggestions

Below you can find matching inductors from Wuerth Elektronik calculated on the maximum parameters of LM22673.

V-IN max. 42 V, I-OUT 3 A, V-OUT min. 1.285 V, Frequency typ. 500 kHz
Order Code Spec L (µH) IR (A) ISAT (A) RDC (mΩ) L x W x H (mm)
74404052022 2.2 3.0 3.6 31.60 5 x 5 x 2
74404054022 2.2 3.8 5.3 19.00 5 x 5 x 4
74404054033 3.3 3.4 4.3 24.00 5 x 5 x 4
74404063022 2.2 3.8 5.6 20.00 6 x 6 x 2.8
74404063033 3.3 3.5 4.5 25.00 6 x 6 x 2.8
74404064033 3.3 3.7 6.5 21.00 6 x 6 x 4.5
74404084033 3.3 4.4 7.1 17.00 8 x 8 x 4.2
7440650022 2.2 6.2 5.9 11.00 10 x 10 x 3.1
7440650033 3.3 5.3 4.7 15.00 10 x 10 x 3.1
7440660022 2.2 6.7 6.8 7.70 10 x 10 x 4.1
744071022 2.2 5.4 6.3 10.00 8 x 8 x 4.6
74408943022 2.2 3.0 4.6 26.00 4.8 x 4.8 x 4.1
744316330 3.3 5.8 5.8 18.50 5.5 x 5.3 x 4.3
74437324022 2.2 3.3 6.5 51.00 4.45 x 4.06 x 2
74438356018 1.8 4.6 6.5 24.50 4.1 x 4.1 x 2.1
74438356022 2.2 4.7 6.2 29.00 4.1 x 4.1 x 2.1
74438356033 3.3 3.6 5.5 39.90 4.1 x 4.1 x 2.1
7447462022 2.2 6.3 4.3 10.00 5.5 x 5.5 x 8.5
7447462033 3.3 4.7 4.0 16.00 5.5 x 5.5 x 8.5
7447713033 3.3 4.6 7.2 20.40 10 x 10 x 3
7447715003 3.3 5.9 7.1 11.50 12 x 12 x 4.5
744772033 3.3 5.0 6.3 9.50 7.8 x 7.8 x 10
744777002 2.2 6.0 6.5 13.00 7.3 x 7.3 x 4.5
744777003 3.3 3.5 4.6 25.00 7.3 x 7.3 x 4.5
7447779002 2.2 4.2 6.0 16.00 7.3 x 7.3 x 4.5
7447779003 3.3 3.3 4.5 26.00 7.3 x 7.3 x 4.5
744778002 2.2 4.0 4.8 14.00 7.3 x 7.3 x 3.4
744778003 3.3 3.1 4.1 24.00 7.3 x 7.3 x 3.4
7447786002 2.2 3.5 4.0 40.00 5.9 x 6.2 x 5.1
7447789002 2.2 4.0 4.8 19.00 7.3 x 7.3 x 3.5
7447789003 3.3 3.4 4.2 24.00 7.3 x 7.3 x 3.5
744787027 2.7 4.4 4.5 13.50 7.8 x 7 x 5
784775022 2.2 6.0 6.0 8.00 7 x 7.8 x 5.5
784775033 3.3 4.9 4.9 12.00 7 x 7.8 x 5.5
784776033 3.3 6.0 7.0 9.00 9 x 10 x 5.9
784778022 2.2 3.1 5.0 42.00 7.3 x 7.3 x 3.5
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