LM2574 Buck Converter overview

Description

Manufacturer
 
Category
Sub-Category

LM2574 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 1.23 V to 37.00 V output voltage.

It requires are a typical inductor size of 150.00 µH, a typical external component count of 6 and achieves a peak efficiency of 88 %. Further LM2574 characteristics are a fixed 52 kHz switching frequency and 2 available package option(s): SOIC-16W PDIP-8 .

For the LM2574 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. 4.75 V
V-IN max. 40.00 V
I-OUT? 0.50 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. 52 kHz
Frequency fixed
Frequency selectable
ext.clock sync. no
Frequency adj./ ext.clock min.
Frequency adj./ ext.clock max
Softstart no
Softstart adjustable no
Tracking no
PG/Power OK no
Quiescent current max. 11000 µA
Operating min.
Operating max.
Junction min. -40 °C
Junction max. 125 °C
thermal shutdown typ.
Inductor size typ. 150.00 µH
Inductor suggested by Würth Elektronik
Automotive AEC-Q100 no
Light-Load-Mode no
Topology Buck
Peak Efficiency 88 %
Component count min. 6
current limit adjustable no
Nr.of packages 2
CSP
SC70
SOT
MSOP
QFN/DFN
SO/SOIC SOIC-16W
SOP
DIP PDIP-8
TO
DDPAK

LM2574 Datasheet

Link to the most up-to-date LM2574 datasheet and the product page for EVM, tools and support information.

LM2574

LM2574 Sample stock and distributor price breaks

LM2574 prices and online available distributors.

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Available Distributors with stock: 0

no online Distributor with LM2574 stock available

Available Distributors with stock: 0

no online Distributor with LM2574 stock available

List of equivalents and alternatives

The following DC/DC Buck Converter are similar to LM2574. Optional, compare LM2574 side-by-side with other Buck Converter via the Comparison function.

Variation Compare Product Manufacturer Package
0% LT1776 LT1776 product overviewLT1776 product overview Linear Technology PDIP, SO-8
0% LT3502 LT3502 product overviewLT3502 product overview Linear Technology DFN-8, MSOP-10
0% LT3502A LT3502A product overviewLT3502A product overview Linear Technology DFN-8, MSOP-10
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% MAX5033 MAX5033 product overviewMAX5033 product overview Maxim PDIP-8, SOIC-8
0% MAX5035 MAX5035 product overviewMAX5035 product overview Maxim PDIP-8, SOIC-8
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% LM2574 LM2574 product overviewLM2574 product overview Micrel DIP-8
0% LM2575 LM2575 product overviewLM2575 product overview Micrel DIP-16, SOP-24
0% MP2456 MP2456 product overviewMP2456 product overview MPS TSOT23-6
0% MP2459 MP2459 product overviewMP2459 product overview MPS TSOT23-6
0% NJW4153 NJW4153 product overviewNJW4153 product overview New Japan Radio ESON-8
0% LM2575 LM2575 product overviewLM2575 product overview ON Semiconductor PAK-5, TO220-5
0% LM2594 LM2594 product overviewLM2594 product overview ON Semiconductor PDIP-8, SOIC-8
0% LM2595 LM2595 product overviewLM2595 product overview ON Semiconductor PAK-5, TO-220-5
0% NCV2575 NCV2575 product overviewNCV2575 product overview ON Semiconductor PAK-5, TO220-5
0% BD9G101 BD9G101 product overviewBD9G101 product overview Rohm SOT-23
0% LM22674 LM22674 product overviewLM22674 product overview Texas Instruments SO-8
0% LM22674-Q1 LM22674-Q1 product overviewLM22674-Q1 product overview Texas Instruments SO-8
0% LM22675 LM22675 product overviewLM22675 product overview Texas Instruments SO-8
0% LM22675-Q1 LM22675-Q1 product overviewLM22675-Q1 product overview Texas Instruments SO-8
0% LM2574 LM2574 product overviewLM2574 product overview Texas Instruments PDIP-8, SOIC-14
0% LM2574HV LM2574HV product overviewLM2574HV product overview Texas Instruments PDIP-8, SOIC-14
0% LM2575 LM2575 product overviewLM2575 product overview Texas Instruments
0% LM2575-N LM2575-N product overviewLM2575-N product overview Texas Instruments TO-263, TO-220-5, PDIP-16, SOIC-24
0% LM2575HV LM2575HV product overviewLM2575HV product overview Texas Instruments TO-263, TO-220-5, PDIP-16, SOIC-24
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% LM2591HV LM2591HV product overviewLM2591HV product overview Texas Instruments TO-263, TO-220-5
0% LM2594 LM2594 product overviewLM2594 product overview Texas Instruments PDIP-8, SOIC-8
0% LM2594HV LM2594HV product overviewLM2594HV product overview Texas Instruments PDIP-8, SOIC-8
0% LM2595 LM2595 product overviewLM2595 product overview Texas Instruments TO-263, TO-220-5
0% LM2597 LM2597 product overviewLM2597 product overview Texas Instruments PDIP-8, SOIC-8
0% LM2597HV LM2597HV product overviewLM2597HV product overview Texas Instruments PDIP-8, SOIC-8
0% LM2598 LM2598 product overviewLM2598 product overview Texas Instruments
0% LM2671 LM2671 product overviewLM2671 product overview Texas Instruments PDIP-8, SOIC-8, WSON-16
0% LM2672 LM2672 product overviewLM2672 product overview Texas Instruments PDIP-8, SOIC-8, WSON-16
0% LM2674 LM2674 product overviewLM2674 product overview Texas Instruments PDIP-8, SOIC-8, WSON-16
0% LM2675 LM2675 product overviewLM2675 product overview Texas Instruments PDIP-8, SOIC-8, WSON-16
0% LM2842X LM2842X product overviewLM2842X product overview Texas Instruments SOT23-6
0% LM2842X-Q1 LM2842X-Q1 product overviewLM2842X-Q1 product overview Texas Instruments SOT23-6
0% LM2842Y LM2842Y product overviewLM2842Y product overview Texas Instruments SOT23-6
0% LM2842Y-Q1 LM2842Y-Q1 product overviewLM2842Y-Q1 product overview Texas Instruments SOT23-6
0% LMR14006-X LMR14006-X product overviewLMR14006-X product overview Texas Instruments TSOT23-6
0% LMR14006-Y LMR14006-Y product overviewLMR14006-Y product overview Texas Instruments TSOT23-6
0% LMR14206 LMR14206 product overviewLMR14206 product overview Texas Instruments SOT23-6
0% TL2575 TL2575 product overviewTL2575 product overview Texas Instruments TO263-5, TO220-5, PDIP-16
0% TL2575HV TL2575HV product overviewTL2575HV product overview Texas Instruments TO263-5, TO220-5, PDIP-16
0% MPQ2459 MPQ2459 product overviewMPQ2459 product overview MPS TSOT23-6
0% MPQ2459-AEC1 MPQ2459-AEC1 product overviewMPQ2459-AEC1 product overview MPS TSOT23-6
10% LT1933 LT1933 product overviewLT1933 product overview Linear Technology DFN-6, TSOT23-6
10% MP2451 MP2451 product overviewMP2451 product overview MPS SOT23-6
10% MP4566 MP4566 product overviewMP4566 product overview MPS QFN-8
10% MPQ2451 MPQ2451 product overviewMPQ2451 product overview MPS SOT23-6
10% RT6200 RT6200 product overviewRT6200 product overview Richtek SOT23-6
25% AS7620A AS7620A product overviewAS7620A product overview AMS MLPQ-12
25% E522.05 E522.05 product overviewE522.05 product overview Elmos TSSOP-16, QFN-20
25% E522.06 E522.06 product overviewE522.06 product overview Elmos TSSOP-16, QFN-20
25% LT1676 LT1676 product overviewLT1676 product overview Linear Technology SO-8
25% LT1777 LT1777 product overviewLT1777 product overview Linear Technology SO-16
25% LT3437 LT3437 product overviewLT3437 product overview Linear Technology TSSOP-16, DFN-10
25% E522.75 E522.75 product overviewE522.75 product overview Elmos SOIC-8-EP
25% E522.76 E522.76 product overviewE522.76 product overview Elmos SOIC-8-EP
50% LT1934 LT1934 product overviewLT1934 product overview Linear Technology DFN-6, TSOT23-6
50% LT3470A LT3470A product overviewLT3470A product overview Linear Technology DFN-8
50% MAX1837 MAX1837 product overviewMAX1837 product overview Maxim TDFN-EP-6, SOT23-6
50% MIC4574 MIC4574 product overviewMIC4574 product overview Micrel DIP-8
50% MP2357 MP2357 product overviewMP2357 product overview MPS TSOT23-5
50% LM2841X LM2841X product overviewLM2841X product overview Texas Instruments SOT23-6
50% LM2841X-Q1 LM2841X-Q1 product overviewLM2841X-Q1 product overview Texas Instruments SOT23-6
50% LM2841Y LM2841Y product overviewLM2841Y product overview Texas Instruments SOT23-6
50% LM2841Y-Q1 LM2841Y-Q1 product overviewLM2841Y-Q1 product overview Texas Instruments SOT23-6
50% LMR14203 LMR14203 product overviewLMR14203 product overview Texas Instruments SOT23-6

Inductor suggestions

Below you can find matching inductors from Wuerth Elektronik calculated on the maximum parameters of LM2574.

V-IN max. 40 V, I-OUT 0.5 A, V-OUT min. 1.23 V, Frequency typ. 52 kHz
Order Code Spec L (µH) IR (A) ISAT (A) RDC (mΩ) L x W x H (mm)
74404052101 100.0 0.6 0.6 1,090.00 5 x 5 x 2
74404054101 100.0 0.7 0.8 560.00 5 x 5 x 4
74404063101 100.0 0.7 0.7 500.00 6 x 6 x 2.8
74404064101 100.0 0.8 1.0 433.00 6 x 6 x 4.5
74404064121 120.0 0.8 1.0 520.00 6 x 6 x 4.5
74404064151 150.0 0.8 0.9 570.00 6 x 6 x 4.5
744065101 100.0 1.0 0.9 365.00 10 x 10 x 3.1
744065121 120.0 0.9 0.9 428.00 10 x 10 x 3.1
744065151 150.0 0.9 0.8 530.00 10 x 10 x 3.1
744066101 100.0 1.2 1.2 255.00 10 x 10 x 4.1
744066151 150.0 1.0 1.1 350.00 10 x 10 x 4.1
744071101 100.0 1.0 0.9 270.00 8 x 8 x 4.6
74408943101 100.0 0.5 0.7 770.00 4.8 x 4.8 x 4.1
744732121 120.0 1.0 1.1 340.00 9 x 9 x 8
744741101 100.0 1.1 0.9 420.00 8 x 8 x 6
7447462101 100.0 0.8 0.8 450.00 5.5 x 5.5 x 8.5
7447471151 150.0 1.4 1.2 210.00 10.5 x 10.5 x 11.5
7447713151 150.0 0.7 1.1 570.00 10 x 10 x 3
7447720151 150.0 1.1 1.2 243.00 7.8 x 7.8 x 10
7447720181 180.0 1.0 1.1 287.00 7.8 x 7.8 x 10
744772121 120.0 0.9 1.0 181.00 7.8 x 7.8 x 10
74477520 100.0 0.8 0.9 248.20 7 x 7.8 x 5.5
744775210 120.0 0.7 0.8 308.00 7 x 7.8 x 5.5
744775215 150.0 0.6 0.7 466.60 7 x 7.8 x 5.5
74477620 100.0 1.0 1.1 200.00 9 x 10 x 5.9
744776212 120.0 0.9 1.0 243.00 9 x 10 x 5.9
744776215 150.0 0.8 0.9 300.00 9 x 10 x 5.9
744776218 180.0 0.8 0.8 320.00 9 x 10 x 5.9
74477720 100.0 0.8 0.8 290.00 7.3 x 7.3 x 4.5
744777212 120.0 0.7 0.7 400.00 7.3 x 7.3 x 4.5
744777215 150.0 0.5 0.6 660.00 7.3 x 7.3 x 4.5
744777920 100.0 0.8 0.8 290.00 7.3 x 7.3 x 4.5
7447779212 120.0 0.7 0.7 396.00 7.3 x 7.3 x 4.5
7447779215 150.0 0.5 0.6 529.00 7.3 x 7.3 x 4.5
74477820 100.0 0.6 0.8 585.00 7.3 x 7.3 x 3.4
744778212 120.0 0.6 0.7 634.00 7.3 x 7.3 x 3.4
744778920 100.0 0.6 0.8 585.00 7.3 x 7.3 x 3.5
7447789212 120.0 0.6 0.7 563.00 7.3 x 7.3 x 3.5
744787101 100.0 1.0 0.9 396.00 7.8 x 7 x 5
744787121 120.0 0.7 0.8 545.00 7.8 x 7 x 5
744787151 150.0 0.7 0.7 610.00 7.8 x 7 x 5
744787181 180.0 0.7 0.6 673.00 7.8 x 7 x 5
78477420 100.0 0.6 0.7 510.00 5.2 x 5.8 x 4.85
78477520 100.0 0.8 0.9 281.00 7 x 7.8 x 5.5
784775212 120.0 0.7 0.8 340.00 7 x 7.8 x 5.5
784775215 150.0 0.6 0.7 467.00 7 x 7.8 x 5.5
78477620 100.0 1.0 1.1 200.00 9 x 10 x 5.9
784776212 120.0 0.9 1.0 243.00 9 x 10 x 5.9
784776215 150.0 0.8 0.9 300.00 9 x 10 x 5.9
784776218 180.0 0.8 0.8 320.00 9 x 10 x 5.9
784777101 100.0 0.7 0.8 390.00 7.3 x 7.3 x 4.3
784778101 100.0 0.7 0.8 600.00 7.3 x 7.3 x 3.5
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