LTC3542 Buck Converter overview



LTC3542 is a 5.50 V sync Buck Converter from with 0.50 A output current. The maximum 5.50 V input voltage can be regulated down into a 0.60 V to 5.50 V output voltage.

It requires are a typical inductor size of 2.20 µH, a typical external component count of 6 and achieves a peak efficiency of 96 %. Further LTC3542 characteristics are a fixed 2250 kHz switching frequency and 2 available package option(s): SOT23 DFN-6 .

For the LTC3542 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.

Search Filter
V-IN min. 2.50 V
V-IN max. 5.50 V
I-OUT? 0.50 A
V-OUT min. 0.60 V
V-OUT max. 5.50 V
V-OUT adjustable V
V-OUT programmable no
sync/non-sync sync
Frequency typ. 2250 kHz
Frequency fixed
Frequency selectable
ext.clock sync. yes
Frequency adj./ ext.clock min. 1000 kHz
Frequency adj./ ext.clock max 3000 kHz
Softstart yes
Softstart adjustable no
Tracking no
PG/Power OK no
Quiescent current max. 500 µA
Operating min. -40 °C
Operating max. 125 °C
Junction min.
Junction max.
thermal shutdown typ.
Inductor size typ. 2.20 µH
Inductor suggested by Würth Elektronik
Automotive AEC-Q100 no
Light-Load-Mode yes
Topology Buck
Peak Efficiency 96 %
Component count min. 6
current limit adjustable no
Nr.of packages 2

LTC3542 Datasheet

Link to the most up-to-date LTC3542 datasheet and the product page for EVM, tools and support information.


LTC3542 Sample stock and distributor price breaks

LTC3542 prices and online available distributors.

Available Distributors with stock: 0

no online Distributor with LTC3542 stock available

Available Distributors with stock: 0

no online Distributor with LTC3542 stock available

List of equivalents and alternatives

The following DC/DC Buck Converter are similar to LTC3542. Optional, compare LTC3542 side-by-side with other Buck Converter via the Comparison function.

Variation Compare Product Manufacturer Package
0% LTC3543 LTC3543 product overviewLTC3543 product overview Linear Technology DFN-6
0% LTC3560 LTC3560 product overviewLTC3560 product overview Linear Technology TSOT23
0% AAT1142 AAT1142 product overviewAAT1142 product overview Skyworks TSOPJW-12, TDFN-12
0% AAT1171 AAT1171 product overviewAAT1171 product overview Skyworks TDFN-12, WLCSP-12
0% AAT2503 AAT2503 product overviewAAT2503 product overview Skyworks QFN-20
0% AAT2504 AAT2504 product overviewAAT2504 product overview Skyworks QFN-20
0% TPS62300 TPS62300 product overviewTPS62300 product overview Texas Instruments SON-10, DSBGA-8
0% TPS62320 TPS62320 product overviewTPS62320 product overview Texas Instruments SON-10, DSBGA-8
25% ISL8010 ISL8010 product overviewISL8010 product overview Intersil MSOP-10
25% LTC1627 LTC1627 product overviewLTC1627 product overview Linear Technology SO-8
25% LTC1707 LTC1707 product overviewLTC1707 product overview Linear Technology SO-8
25% LTC1877 LTC1877 product overviewLTC1877 product overview Linear Technology MSOP-8
25% LTC1878 LTC1878 product overviewLTC1878 product overview Linear Technology MSOP-8

Inductor suggestions

Below you can find matching inductors from Wuerth Elektronik calculated on the maximum parameters of LTC3542.

V-IN max. 5.5 V, I-OUT 0.5 A, V-OUT min. 0.6 V, Frequency typ. 2250 kHz
Order Code Spec L (µH) IR (A) ISAT (A) RDC (mΩ) L x W x H (mm)
744030001 1.2 1.0 1.1 95.00 3.3 x 3.5 x 1.05
744031001 1.5 1.8 1.6 40.00 3.8 x 3.8 x 1.8
74479775215 1.5 1.1 0.8 160.00 2 x 1.2 x 1.2
74479776215 1.5 1.3 0.8 110.00 2 x 1.6 x 1
74479787215A 1.5 1.9 1.1 70.00 2.5 x 2 x 1
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