LTC3608 Buck Converter overview

Description

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Category
Sub-Category

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.

ParameterValueReplacement
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
CSP
SC70
SOT
MSOP
QFN/DFN QFN-52
SO/SOIC
SOP
DIP
TO
DDPAK

LTC3608 Datasheet

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

LTC3608

LTC3608 Sample stock and distributor price breaks

LTC3608 prices and online available distributors.

OEMSecrets.com
findchips.com

Available Distributors with stock: 6

Chip One Stop (1)

ProductStockPriceBuy
LTC3608EWKG#PBF45
115.90 USD
511.30 USD
1011.00 USD
4510.50 USD
Buy Now

Digi-Key (1)

ProductStockPriceBuy
LTC3608EWKG#PBF0
116.35 USD
2510.91 USD
1009.29 USD
Buy Now
LTC3608IWKG#PBF90
118.79 USD
2512.58 USD
10010.69 USD
Buy Now
LTC3608EWKG#TRPBF0
20009.39 USD
Buy Now
LTC3608IWKG#TRPBF0
200010.79 USD
Buy Now

Element14 (1)

ProductStockPriceBuy
LTC3608EWKG#PBF7
125.50 USD
2517.02 USD
10014.49 USD
Buy Now

Farnell Element14 (1)

ProductStockPriceBuy
LTC3608EWKG#PBF7Buy Now
LTC3608IWKG#PBF0Buy Now

Newark Electronics (1)

ProductStockPriceBuy
LTC3608EWKG#PBF51
18.15 USD
258.15 USD
1008.15 USD
Buy Now

RS Components (1)

ProductStockPriceBuy
LTC3608EWKG#PBF55Buy Now

Available Distributors with stock: 9

Arrow Electronics

ProductStockPriceBuy
LTC3608IWKG#PBF 10
112.33 $
10010.48 $
Buy Now
LTC3608IWKG#TRPBF 0
10010.58 $
Buy Now
LTC3608IWKG#TRPBF 0
10010.58 $
Buy Now
LTC3608EWKG#PBF 0
110.70 $
1009.11 $
Buy Now
LTC3608EWKG#PBF 0
110.70 $
1009.11 $
Buy Now
LTC3608EWKG#TRPBF 0
1009.21 $
Buy Now
LTC3608EWKG#TRPBF 0
1009.21 $
Buy Now
show stock=0hide stock=0

Digi-Key

ProductStockPriceBuy
LTC3608IWKG#PBF 90
1008.61 €
2510.14 €
115.14 €
Buy Now
LTC3608EWKG#PBF 0
1007.49 €
258.80 €
113.18 €
Buy Now
LTC3608EWKG#TRPBF 0
20007.57 €
Buy Now
LTC3608IWKG#TRPBF 0
20008.70 €
Buy Now
show stock=0hide stock=0

Newark element14

ProductStockPriceBuy
LTC3608EWKG#PBF 51
18.15 $
258.15 $
1008.15 $
Buy Now

Mouser Electronics

ProductStockPriceBuy
LTC3608EWKG#PBF 39
116.38 $
1015.01 $
2510.91 $
1009.29 $
Buy Now
LTC3608IWKG#PBF 5
118.82 $
1017.25 $
2512.58 $
10010.69 $
Buy Now
LTC3608EWKG#TRPBF 0
20009.39 $
Buy Now
LTC3608IWKG#TRPBF 0
200010.79 $
Buy Now
show stock=0hide stock=0

Quest Components

ProductStockPriceBuy
LTC3608EWKG#PBF 170
1247.82 $
588.16 $
113.60 $
Buy Now
LTC3608EWKG#TRPBF 23
510.20 $
113.60 $
Buy Now

element14 Asia-Pacific

ProductStockPriceBuy
LTC3608EWKG#PBF 7
120.40 $
2513.62 $
10011.59 $
Buy Now

Farnell element14

ProductStockPriceBuy
LTC3608EWKG#PBF 7
111.91 GBP
1011.51 GBP
257.68 GBP
507.40 GBP
1007.12 GBP
Buy Now

Chip1Stop

ProductStockPriceBuy
LTC3608EWKG#PBF 45
4510.50 $
1011.00 $
115.90 $
Buy Now

RS Components

ProductStockPriceBuy
LTC3608EWKG#PBF 55
1012.10 GBP
2511.95 GBP
5011.79 GBP
7511.64 GBP
Buy Now

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
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