LM2599 Buck Converter overview

Description

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LM2599 is a 40.00 V non-sync Buck Converter from with 3.00 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 33.00 µH, a typical external component count of 10 and achieves a peak efficiency of 92 %. Further LM2599 characteristics are a fixed 150 kHz switching frequency and 2 available package option(s): TO-220-7 DDPAK-7 .

For the LM2599 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? 3.00 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. 33.00 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 TO-220-7
DDPAK DDPAK-7

LM2599 Datasheet

Link to the most up-to-date LM2599 datasheet and the product page for EVM, tools and support information.

LM2599

LM2599 Sample stock and distributor price breaks

LM2599 prices and online available distributors.

OEMSecrets.com
findchips.com

Available Distributors with stock: 0

no online Distributor with LM2599 stock available

Available Distributors with stock: 0

no online Distributor with LM2599 stock available

List of equivalents and alternatives

The following DC/DC Buck Converter are similar to LM2599. Optional, compare LM2599 side-by-side with other Buck Converter via the Comparison function.

Variation Compare Product Manufacturer Package
25% LT3434 LT3434 product overviewLT3434 product overview Linear Technology TSSOP-16
25% LT3435 LT3435 product overviewLT3435 product overview Linear Technology TSSOP-16
50% ISL8500 ISL8500 product overviewISL8500 product overview Intersil DFN-12
50% MP2364 MP2364 product overviewMP2364 product overview MPS
50% MP2490DQ MP2490DQ product overviewMP2490DQ product overview MPS SOIC-8, QFN-10
50% MP2490DS MP2490DS product overviewMP2490DS product overview MPS SOIC-8, QFN-10
50% MP2490CP MP2490CP product overviewMP2490CP product overview MPS SOIC-8, QFN-10
50% MP28372 MP28372 product overviewMP28372 product overview MPS TSSOP-20, SOIC-16
50% MP29373 MP29373 product overviewMP29373 product overview MPS TSSOP-20
50% MPQ2490 MPQ2490 product overviewMPQ2490 product overview MPS QFN-10
50% LM2593HV LM2593HV product overviewLM2593HV product overview Texas Instruments TO-263, TO-220-7

Inductor suggestions

Below you can find matching inductors from Wuerth Elektronik calculated on the maximum parameters of LM2599.

V-IN max. 40 V, I-OUT 3 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)
74404064068 6.8 3.0 4.3 31.00 6 x 6 x 4.5
74404084068 6.8 3.6 5.0 24.00 8 x 8 x 4.2
74404084082 8.2 3.5 4.6 26.00 8 x 8 x 4.2
74404084100 10.0 3.3 4.6 29.00 8 x 8 x 4.2
7440650068 6.8 4.2 3.6 25.00 10 x 10 x 3.1
7440660062 6.2 4.3 4.5 16.50 10 x 10 x 4.1
744066100 10.0 3.6 4.0 25.00 10 x 10 x 4.1
744314101 10.0 3.5 4.0 33.00 7 x 6.9 x 5
744314650 6.5 6.0 6.0 21.50 7 x 6.9 x 5
744314760 7.6 4.2 4.8 30.20 7 x 6.9 x 5
744314850 8.5 4.0 4.5 32.50 7 x 6.9 x 5
7443341000 10.0 4.4 7.0 38.50 8.4 x 7.9 x 7.5
744732100 10.0 4.0 4.0 27.00 9 x 9 x 8
7447452100 10.0 4.7 4.5 15.00 9 x 9 x 13.5
7447471068 6.8 6.4 5.0 11.90 10.5 x 10.5 x 11.5
7447471100 10.0 5.1 4.2 17.50 10.5 x 10.5 x 11.5
744750230100 10.0 4.6 6.8 18.60 8.8 x 8.8 x 11
74477010 10.0 6.2 6.6 19.00 12 x 12 x 8
744771006 6.8 5.6 6.0 14.00 12 x 12 x 6
744771008 8.2 6.3 6.3 14.00 12 x 12 x 6
74477110 10.0 4.1 5.6 21.00 12 x 12 x 6
7447713082 8.2 3.0 4.7 41.00 10 x 10 x 3
7447714068 6.8 5.2 5.8 18.50 10 x 10 x 5
7447714100 10.0 4.3 5.0 23.00 10 x 10 x 5
7447715006 6.8 4.3 4.7 20.00 12 x 12 x 4.5
7447715100 10.0 3.8 4.2 25.00 12 x 12 x 4.5
744772068 6.8 3.8 6.5 18.50 7.8 x 7.8 x 10
744772100 10.0 4.2 5.0 20.30 7.8 x 7.8 x 10
7447797820 8.2 5.1 5.8 25.30 10.2 x 10.2 x 4.5
7447798620 6.2 9.4 6.7 8.40 10.2 x 10.2 x 6.4
7447798720 7.2 7.9 6.0 11.30 10.2 x 10.2 x 6.4
7447798910 9.1 7.4 5.4 12.70 10.2 x 10.2 x 6.4
784770100 10.0 5.0 6.8 26.00 12 x 12 x 8.3
784771068 6.8 5.5 6.0 18.00 12 x 12 x 8.3
784771082 8.2 5.1 5.5 20.00 12 x 12 x 8.3
784771100 10.0 5.0 5.3 22.00 12 x 12 x 8.3
784775068 6.8 3.7 3.8 22.00 7 x 7.8 x 5.5
784776068 6.8 4.4 5.0 16.00 9 x 10 x 5.9
784776082 8.2 4.2 4.3 20.00 9 x 10 x 5.9
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