LTC3608 Buck Converter overview



LTC3608 is a 18.00 V sync Buck Converter from with 8.00 A output current. The maximum 18.00 V input voltage can be regulated down into a 0.60 V to 17.80 V output voltage.

It requires are a typical inductor size of 0.80 µH, a typical external component count of 11 and achieves a peak efficiency of 95 %. Further LTC3608 characteristics are a adjustable 550 kHz switching frequency and 1 available package option(s): QFN-52 .

For the LTC3608 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. 4.00 V
V-IN max. 18.00 V
I-OUT? 8.00 A
V-OUT min. 0.60 V
V-OUT max. 17.80 V
V-OUT adjustable V
V-OUT programmable no
sync/non-sync sync
Frequency typ. 550 kHz
Frequency adjustable
Frequency selectable
ext.clock sync. no
Frequency adj./ ext.clock min. 450 kHz
Frequency adj./ ext.clock max 600 kHz
Softstart yes
Softstart adjustable yes
Tracking no
PG/Power OK yes
Quiescent current max. 2000 µA
Operating min.
Operating max.
Junction min. -40 °C
Junction max. 125 °C
thermal shutdown typ.
Inductor size typ. 0.80 µH
Inductor suggested by Würth Elektronik
Automotive AEC-Q100 no
Light-Load-Mode yes
Topology Buck
Peak Efficiency 95 %
Component count min. 11
current limit adjustable yes
Nr.of packages 1

LTC3608 Datasheet

Link to the most up-to-date LTC3608 datasheet and the product page for EVM, tools and support information.


LTC3608 Sample stock and distributor price breaks

LTC3608 prices and online available distributors.

Available Distributors with stock: 0

no online Distributor with LTC3608 stock available

Available Distributors with stock: 0

no online Distributor with LTC3608 stock available

List of equivalents and alternatives

The following DC/DC Buck Converter are similar to LTC3608. Optional, compare LTC3608 side-by-side with other Buck Converter via the Comparison function.

Variation Compare Product Manufacturer Package
0% IR3475M IR3475M product overviewIR3475M product overview IRF PQFN-14
0% IR3476M IR3476M product overviewIR3476M product overview IRF PQFN-14
0% IR3477M IR3477M product overviewIR3477M product overview IRF PQFN-14
0% IR3865M IR3865M product overviewIR3865M product overview IRF PQFN-17
0% IR3871M IR3871M product overviewIR3871M product overview IRF PQFN-17
0% IR3876M IR3876M product overviewIR3876M product overview IRF PQFN-17
0% LTC3610 LTC3610 product overviewLTC3610 product overview Linear Technology QFN-64
0% LTC3611 LTC3611 product overviewLTC3611 product overview Linear Technology QFN-64
10% TPS54020 TPS54020 product overviewTPS54020 product overview Texas Instruments VQFN-15
25% IR3473M IR3473M product overviewIR3473M product overview IRF PQFN-14
25% IR3863M IR3863M product overviewIR3863M product overview IRF PQFN-17
25% LTC3609 LTC3609 product overviewLTC3609 product overview Linear Technology QFN-52
25% BD95500 BD95500 product overviewBD95500 product overview Rohm QFN-40
50% BD95514 BD95514 product overviewBD95514 product overview Rohm QFN-32

Inductor suggestions

Below you can find matching inductors from Wuerth Elektronik calculated on the maximum parameters of LTC3608.

V-IN max. 18 V, I-OUT 8 A, V-OUT min. 0.6 V, Frequency typ. 550 kHz
Order Code Spec L (µH) IR (A) ISAT (A) RDC (mΩ) L x W x H (mm)
744305040 0.4 28.0 20.0 0.16 13.5 x 13.3 x 5.2
7443081040 0.4 38.0 21.0 0.29 9.4 x 6.2 x 8.1
744310055 0.5 14.0 20.0 3.70 7 x 6.9 x 3.3
744314047 0.5 18.0 20.0 1.35 7 x 6.9 x 5
744316047 0.5 15.0 16.0 2.75 5.5 x 5.3 x 4.3
744373360047 0.5 8.3 20.0 6.40 5.7 x 5.2 x 3
744383560056 0.6 8.5 10.8 7.00 4.1 x 4.1 x 2.1
7447715906 0.6 9.5 19.0 4.50 12 x 12 x 4.5
7447798050 0.5 18.5 18.0 2.20 10.2 x 10.2 x 6.4
Fresh Search
Replacement Search with
0% tolerance (0)
10% tolerance (0)
25% tolerance (0)
50% tolerance (0)
add to Compare
Loading. Please wait.