LTC3815 Buck Converter overview



LTC3815 is a 5.50 V sync Buck Converter from with 6.00 A output current. The maximum 5.50 V input voltage can be regulated down into a 0.40 V to 3.96 V output voltage.

It requires are a typical inductor size of 0.30 µH, a typical external component count of 14 and achieves a peak efficiency of 93 %. Further LTC3815 characteristics are a adjustable 1000 kHz switching frequency and 1 available package option(s): QFN-38 .

For the LTC3815 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.

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V-IN min. 2.25 V
V-IN max. 5.50 V
I-OUT? 6.00 A
V-OUT min. 0.40 V
V-OUT max. 3.96 V
V-OUT adjustable V
V-OUT programmable yes
sync/non-sync sync
Frequency typ. 1000 kHz
Frequency adjustable
Frequency selectable
ext.clock sync. yes
Frequency adj./ ext.clock min. 400 kHz
Frequency adj./ ext.clock max 3000 kHz
Softstart yes
Softstart adjustable no
Tracking yes
PG/Power OK yes
Quiescent current max. 200 µA
Operating min.
Operating max.
Junction min. -40 °C
Junction max. 125 °C
thermal shutdown typ.
Inductor size typ. 0.30 µH
Inductor suggested by Würth Elektronik
Automotive AEC-Q100 no
Light-Load-Mode yes
Topology Buck
Peak Efficiency 93 %
Component count min. 14
current limit adjustable yes
Nr.of packages 1

LTC3815 Datasheet

Link to the most up-to-date LTC3815 datasheet and the product page for EVM, tools and support information.


LTC3815 Sample stock and distributor price breaks

LTC3815 prices and online available distributors.

Available Distributors with stock: 0

no online Distributor with LTC3815 stock available

Available Distributors with stock: 0

no online Distributor with LTC3815 stock available

List of equivalents and alternatives

The following DC/DC Buck Converter are similar to LTC3815. Optional, compare LTC3815 side-by-side with other Buck Converter via the Comparison function.

no alternatives found

Inductor suggestions

Below you can find matching inductors from Wuerth Elektronik calculated on the maximum parameters of LTC3815.

V-IN max. 5.5 V, I-OUT 6 A, V-OUT min. 0.4 V, Frequency typ. 1000 kHz
Order Code Spec L (µH) IR (A) ISAT (A) RDC (mΩ) L x W x H (mm)
74407000018 0.2 9.0 9.0 3.51 8 x 8 x 2
744373210022 0.2 7.5 18.0 6.60 4.45 x 4.06 x 1.2
744373240022 0.2 9.5 17.0 6.60 4.45 x 4.06 x 2
744373240033 0.3 8.0 16.5 7.80 4.45 x 4.06 x 2
744383560033 0.3 9.6 12.4 6.00 4.1 x 4.1 x 2.1
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