LTC3409 Buck Converter overview

Description

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LTC3409 is a 5.50 V sync Buck Converter from with 0.60 A output current. The maximum 5.50 V input voltage can be regulated down into a 0.61 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 95 %. Further LTC3409 characteristics are a adjustable 2600 kHz switching frequency and 1 available package option(s): DFN-8 .

For the LTC3409 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. 1.60 V
V-IN max. 5.50 V
I-OUT? 0.60 A
V-OUT min. 0.61 V
V-OUT max. 5.50 V
V-OUT adjustable V
V-OUT programmable no
sync/non-sync sync
Frequency typ. 2600 kHz
Frequency adjustable
Frequency selectable 1700/2600 kHz
ext.clock sync. yes
Frequency adj./ ext.clock min.
Frequency adj./ ext.clock max
Softstart yes
Softstart adjustable no
Tracking no
PG/Power OK no
Quiescent current max. 475 µA
Operating min. -40 °C
Operating max. 85 °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 95 %
Component count min. 6
current limit adjustable no
Nr.of packages 1
CSP
SC70
SOT
MSOP
QFN/DFN DFN-8
SO/SOIC
SOP
DIP
TO
DDPAK

LTC3409 Datasheet

Link to the most up-to-date LTC3409 datasheet and the product page for EVM, tools and support information.

LTC3409

LTC3409 Sample stock and distributor price breaks

LTC3409 prices and online available distributors.

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Available Distributors with stock: 0

no online Distributor with LTC3409 stock available

Available Distributors with stock: 0

no online Distributor with LTC3409 stock available

List of equivalents and alternatives

The following DC/DC Buck Converter are similar to LTC3409. Optional, compare LTC3409 side-by-side with other Buck Converter via the Comparison function.

Variation Compare Product Manufacturer Package
0% LTC3409A LTC3409A product overviewLTC3409A product overview Linear Technology DFN-8
0% LTC3646-1 LTC3646-1 product overviewLTC3646-1 product overview Linear Technology DFN-14, MSOP-16
0% TPS62050 TPS62050 product overviewTPS62050 product overview Texas Instruments MSOP
0% TPS62051 TPS62051 product overviewTPS62051 product overview Texas Instruments MSOP
0% ADP2442 ADP2442 product overviewADP2442 product overview Analog Devices LFCSP-12
25% ADP2370 ADP2370 product overviewADP2370 product overview Analog Devices QFN-8
25% ADP2371 ADP2371 product overviewADP2371 product overview Analog Devices QFN-8
25% SC192 SC192 product overviewSC192 product overview Semtech MLPD-10

Inductor suggestions

Below you can find matching inductors from Wuerth Elektronik calculated on the maximum parameters of LTC3409.

V-IN max. 5.5 V, I-OUT 0.6 A, V-OUT min. 0.613 V, Frequency typ. 2600 kHz
Order Code Spec L (µH) IR (A) ISAT (A) RDC (mΩ) L x W x H (mm)
744028001 1.0 1.8 1.5 65.00 2.8 x 2.8 x 1.2
744029001 1.0 2.2 1.6 45.00 2.8 x 2.8 x 1.5
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
744031010 1.0 2.0 1.6 26.00 3.8 x 3.8 x 1.8
74479773210 1.0 1.2 0.8 180.00 2 x 1.25 x 0.6
74479775210A 1.0 1.3 1.0 110.00 2 x 1.2 x 1.2
74479775215 1.5 1.1 0.8 160.00 2 x 1.2 x 1.2
74479776210 1.0 1.4 1.0 90.00 2 x 1.6 x 1
74479776215 1.5 1.3 0.8 110.00 2 x 1.6 x 1
74479787210B 1.0 2.0 1.2 60.00 2.5 x 2 x 1
74479787215A 1.5 1.9 1.1 70.00 2.5 x 2 x 1
74479876210 1.0 1.5 1.5 70.00 2 x 1.6 x 1
74479887210A 1.0 1.6 1.0 100.00 2.5 x 2 x 1
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