LTC3388-3 Buck Converter overview



LTC3388-3 is a 20.00 V sync Buck Converter from with 0.05 A output current. The maximum 20.00 V input voltage can be regulated down into a 2.80 V to 5.00 V output voltage.

It requires are a typical inductor size of 22.00 µH, a typical external component count of 5 and achieves a peak efficiency of 96 %. Further LTC3388-3 characteristics are a fixed 600 kHz switching frequency and 2 available package option(s): MSOP-10 DFN-10 .

For the LTC3388-3 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. 2.70 V
V-IN max. 20.00 V
I-OUT? 0.05 A
V-OUT min. 2.80 V
V-OUT max. 5.00 V
V-OUT adjustable V
V-OUT programmable yes
sync/non-sync sync
Frequency typ. 600 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 yes
Quiescent current max. 250 µA
Operating min.
Operating max.
Junction min. -40 °C
Junction max. 125 °C
thermal shutdown typ.
Inductor size typ. 22.00 µH
Inductor suggested by Würth Elektronik
Automotive AEC-Q100 no
Light-Load-Mode yes
Topology Buck
Peak Efficiency 96 %
Component count min. 5
current limit adjustable no
Nr.of packages 2

LTC3388-3 Datasheet

Link to the most up-to-date LTC3388-3 datasheet and the product page for EVM, tools and support information.


LTC3388-3 Sample stock and distributor price breaks

LTC3388-3 prices and online available distributors.

Available Distributors with stock: 0

no online Distributor with LTC3388 stock available

Available Distributors with stock: 0

no online Distributor with LTC3388 stock available

List of equivalents and alternatives

The following DC/DC Buck Converter are similar to LTC3388-3. Optional, compare LTC3388-3 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 LTC3388-3.

V-IN max. 20 V, I-OUT 0.05 A, V-OUT min. 2.8 V, Frequency typ. 600 kHz
Order Code Spec L (µH) IR (A) ISAT (A) RDC (mΩ) L x W x H (mm)
744032221 220.0 0.1 0.2 9,440.00 3.2 x 2.5 x 2.3
744042221 220.0 0.2 0.2 2,880.00 4.8 x 4.8 x 2
744043221 220.0 0.3 0.2 1,008.00 4.8 x 4.8 x 3
744052221 220.0 0.2 0.3 2,400.00 5.8 x 5.8 x 2
744053221 220.0 0.3 0.3 1,170.00 5.8 x 5.8 x 3
744062221 220.0 0.4 0.3 1,010.00 6.8 x 6.8 x 2.5
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