LM2598 Buck Converter overview

Description

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Sub-Category

LM2598 is a 40.00 V non-sync Buck Converter from with 1.00 A output current. The maximum 40.00 V input voltage can be regulated down into a 1.23 V to 37.00 V output voltage.

It requires are a typical inductor size of 68.00 µH, a typical external component count of 10 and achieves a peak efficiency of 92 %. Further LM2598 characteristics are a fixed 150 kHz switching frequency and 2 available package option(s): .

For the LM2598 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. 40.00 V
I-OUT? 1.00 A
V-OUT min. 1.23 V
V-OUT max. 37.00 V
V-OUT adjustable V
V-OUT programmable no
sync/non-sync non-sync
Frequency typ. 150 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 yes
Quiescent current max. 10000 µA
Operating min.
Operating max.
Junction min. -40 °C
Junction max. 125 °C
thermal shutdown typ.
Inductor size typ. 68.00 µH
Inductor suggested by Würth Elektronik
Automotive AEC-Q100 no
Light-Load-Mode no
Topology Buck
Peak Efficiency 92 %
Component count min. 10
current limit adjustable no
Nr.of packages 2
CSP
SC70
SOT
MSOP
QFN/DFN
SO/SOIC
SOP
DIP
TO
DDPAK

LM2598 Datasheet

Link to the most up-to-date LM2598 datasheet and the product page for EVM, tools and support information.

LM2598

LM2598 Sample stock and distributor price breaks

LM2598 prices and online available distributors.

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Available Distributors with stock: 0

no online Distributor with LM2598 stock available

Available Distributors with stock: 0

no online Distributor with LM2598 stock available

List of equivalents and alternatives

The following DC/DC Buck Converter are similar to LM2598. Optional, compare LM2598 side-by-side with other Buck Converter via the Comparison function.

Variation Compare Product Manufacturer Package
0% LT1976 LT1976 product overviewLT1976 product overview Linear Technology TSSOP-16
0% LT1977 LT1977 product overviewLT1977 product overview Linear Technology TSSOP-16
0% LM2590HV LM2590HV product overviewLM2590HV product overview Texas Instruments TO-263, TO-220-7
0% LM2590HV-AQ-Q1 LM2590HV-AQ-Q1 product overviewLM2590HV-AQ-Q1 product overview Texas Instruments TO-263, TO-220-7
0% LM2593HV LM2593HV product overviewLM2593HV product overview Texas Instruments TO-263, TO-220-7
10% MP2490DQ MP2490DQ product overviewMP2490DQ product overview MPS SOIC-8, QFN-10
10% MP2490DS MP2490DS product overviewMP2490DS product overview MPS SOIC-8, QFN-10
10% MP2490CP MP2490CP product overviewMP2490CP product overview MPS SOIC-8, QFN-10
10% MPQ2490 MPQ2490 product overviewMPQ2490 product overview MPS QFN-10
50% ISL85001 ISL85001 product overviewISL85001 product overview Intersil DFN-12
50% LM2597 LM2597 product overviewLM2597 product overview Texas Instruments PDIP-8, SOIC-8
50% LM2597HV LM2597HV product overviewLM2597HV product overview Texas Instruments PDIP-8, SOIC-8

Inductor suggestions

Below you can find matching inductors from Wuerth Elektronik calculated on the maximum parameters of LM2598.

V-IN max. 40 V, I-OUT 1 A, V-OUT min. 1.23 V, Frequency typ. 150 kHz
Order Code Spec L (µH) IR (A) ISAT (A) RDC (mΩ) L x W x H (mm)
74404052220 22.0 1.2 1.4 225.00 5 x 5 x 2
74404054220 22.0 1.5 1.7 129.00 5 x 5 x 4
74404063220 22.0 1.4 1.6 140.00 6 x 6 x 2.8
74404064180 18.0 1.9 2.4 81.00 6 x 6 x 4.5
74404064220 22.0 1.8 2.2 89.00 6 x 6 x 4.5
744065220 22.0 1.8 1.9 104.00 10 x 10 x 3.1
744066220 22.0 2.5 2.3 55.80 10 x 10 x 4.1
744071220 22.0 2.3 1.9 65.00 8 x 8 x 4.6
74408943220 22.0 1.1 1.4 185.00 4.8 x 4.8 x 4.1
74437324220 22.0 1.0 2.0 470.00 4.45 x 4.06 x 2
7447462220 22.0 1.8 1.7 102.00 5.5 x 5.5 x 8.5
744773118 18.0 1.1 1.3 225.00 4 x 4.5 x 3.5
744773122 22.0 1.0 1.2 261.00 4 x 4.5 x 3.5
744775118 18.0 1.9 2.1 52.60 7 x 7.8 x 5.5
744775122 22.0 1.8 1.8 65.40 7 x 7.8 x 5.5
744775127 27.0 1.5 1.6 73.80 7 x 7.8 x 5.5
744776118 18.0 2.4 2.4 42.80 9 x 10 x 5.9
744776122 22.0 2.0 2.1 51.10 9 x 10 x 5.9
744776127 27.0 2.0 2.0 62.70 9 x 10 x 5.9
744777118 18.0 1.5 2.1 80.00 7.3 x 7.3 x 4.5
744777122 22.0 1.4 1.7 90.00 7.3 x 7.3 x 4.5
744777127 27.0 1.2 1.6 117.20 7.3 x 7.3 x 4.5
7447779118 18.0 1.5 2.1 80.00 7.3 x 7.3 x 4.5
7447779122 22.0 1.4 1.7 90.00 7.3 x 7.3 x 4.5
7447779127 27.0 1.2 1.6 120.00 7.3 x 7.3 x 4.5
744778118 18.0 1.4 1.7 114.00 7.3 x 7.3 x 3.4
744778122 22.0 1.4 1.4 119.00 7.3 x 7.3 x 3.4
744778127 27.0 1.3 1.3 140.00 7.3 x 7.3 x 3.4
7447786122 22.0 2.0 1.3 98.00 5.9 x 6.2 x 5.1
7447789118 18.0 1.4 1.7 114.00 7.3 x 7.3 x 3.5
7447789122 22.0 1.4 1.4 119.00 7.3 x 7.3 x 3.5
7447789127 27.0 1.3 1.4 130.00 7.3 x 7.3 x 3.5
744787180 18.0 2.2 1.9 67.00 7.8 x 7 x 5
744787220 22.0 1.8 1.7 88.00 7.8 x 7 x 5
784773118 18.0 1.1 1.3 225.00 4 x 4.5 x 3.5
784773122 22.0 1.0 1.2 261.00 4 x 4.5 x 3.5
784774118 18.0 1.5 1.7 104.00 5.2 x 5.8 x 4.85
784774122 22.0 1.3 1.5 109.00 5.2 x 5.8 x 4.85
784774127 27.0 1.2 1.4 133.00 5.2 x 5.8 x 4.85
784775118 18.0 1.9 2.1 53.00 7 x 7.8 x 5.5
784775122 22.0 1.8 1.8 65.00 7 x 7.8 x 5.5
784775127 27.0 1.5 1.6 74.00 7 x 7.8 x 5.5
784776118 18.0 2.4 2.4 43.00 9 x 10 x 5.9
784776122 22.0 2.0 2.1 51.00 9 x 10 x 5.9
784776127 27.0 2.0 2.0 63.00 9 x 10 x 5.9
784777220 22.0 1.4 1.8 180.00 7.3 x 7.3 x 4.3
784778220 22.0 1.6 1.6 156.00 7.3 x 7.3 x 3.5
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