LTC3611 Buck Converter overview

Description

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Category
Sub-Category

LTC3611 is a 32.00 V sync Buck Converter from with 10.00 A output current. The maximum 32.00 V input voltage can be regulated down into a 0.60 V to 31.40 V output voltage.

It requires are a typical inductor size of 1.00 µH, a typical external component count of 15 and achieves a peak efficiency of 95 %. Further LTC3611 characteristics are a adjustable 560 kHz switching frequency and 1 available package option(s): QFN-64 .

For the LTC3611 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. 4.50 V
V-IN max. 32.00 V
I-OUT? 10.00 A
V-OUT min. 0.60 V
V-OUT max. 31.40 V
V-OUT adjustable V
V-OUT programmable no
sync/non-sync sync
Frequency typ. 560 kHz
Frequency adjustable
Frequency selectable
ext.clock sync. no
Frequency adj./ ext.clock min. 540 kHz
Frequency adj./ ext.clock max 620 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. 1.00 µH
Inductor suggested by Würth Elektronik
Automotive AEC-Q100 no
Light-Load-Mode yes
Topology Buck
Peak Efficiency 95 %
Component count min. 15
current limit adjustable yes
Nr.of packages 1
CSP
SC70
SOT
MSOP
QFN/DFN QFN-64
SO/SOIC
SOP
DIP
TO
DDPAK

LTC3611 Datasheet

Link to the most up-to-date LTC3611 datasheet and the product page for EVM, tools and support information.

LTC3611

LTC3611 Sample stock and distributor price breaks

LTC3611 prices and online available distributors.

OEMSecrets.com
findchips.com

Available Distributors with stock: 6

Chip One Stop (2)

ProductStockPriceBuy
LTC3611EWP320
50023.40 USD
Buy Now
LTC3611EWP#PBF124
123.60 USD
10017.50 USD
Buy Now

Digi-Key (1)

ProductStockPriceBuy
LTC3611EWP#PBF168
117.00 USD
2514.21 USD
10012.08 USD
Buy Now
LTC3611IWP#PBF0
119.54 USD
2516.34 USD
10013.88 USD
Buy Now
LTC3611EWP#TRPBF0
200012.18 USD
Buy Now
LTC3611IWP#TRPBF0
200013.98 USD
Buy Now

Element14 (1)

ProductStockPriceBuy
LTC3611EWP#PBF12
125.67 USD
2521.47 USD
10018.25 USD
Buy Now

Farnell Element14 (1)

ProductStockPriceBuy
LTC3611EWP#PBF16Buy Now

Newark Electronics (1)

ProductStockPriceBuy
LTC3611EWP#PBF6
111.10 USD
2511.10 USD
10011.10 USD
Buy Now
LTC3611IWP#PBF0
119.19 USD
2516.06 USD
10013.61 USD
Buy Now

RS Components (1)

ProductStockPriceBuy
LTC3611EWP#PBF1Buy Now

Available Distributors with stock: 7

Arrow Electronics

ProductStockPriceBuy
LTC3611EWP 480
170.47 $
1036.45 $
5028.56 $
10018.55 $
50018.31 $
100018.19 $
250018.07 $
500018.02 $
1000017.96 $
2500017.84 $
Buy Now
LTC3611EWP#PBF 124
113.93 $
10011.84 $
Buy Now

Digi-Key

ProductStockPriceBuy
LTC3611EWP#PBF 168
10010.38 €
2512.22 €
114.62 €
Buy Now
LTC3611IWP#PBF 0
10011.94 €
2514.05 €
116.80 €
Buy Now
LTC3611EWP#TRPBF 0
200010.47 €
Buy Now
LTC3611IWP#TRPBF 0
200012.02 €
Buy Now
show stock=0hide stock=0

Newark element14

ProductStockPriceBuy
LTC3611IWP#PBF 0
119.19 $
2516.06 $
10013.00 $
Buy Now
LTC3611EWP#PBF 6
111.10 $
2511.10 $
10011.00 $
Buy Now
show stock=0hide stock=0

element14 Asia-Pacific

ProductStockPriceBuy
LTC3611EWP#PBF 12
120.54 $
2517.18 $
10014.60 $
Buy Now

Farnell element14

ProductStockPriceBuy
LTC3611EWP#PBF 16
112.97 GBP
2510.60 GBP
1009.65 GBP
Buy Now

Chip1Stop

ProductStockPriceBuy
LTC3611EWP 320
50023.40 $
Buy Now
LTC3611EWP#PBF 124
123.60 $
10017.50 $
Buy Now

RS Components

ProductStockPriceBuy
LTC3611EWP#PBF 1
511.76 GBP
1011.62 GBP
2511.40 GBP
Buy Now

List of equivalents and alternatives

The following DC/DC Buck Converter are similar to LTC3611. Optional, compare LTC3611 side-by-side with other Buck Converter via the Comparison function.

Variation Compare Product Manufacturer Package
25% IR3475M IR3475M product overviewIR3475M product overview IRF PQFN-14
25% IR3476M IR3476M product overviewIR3476M product overview IRF PQFN-14
25% IR3477M IR3477M product overviewIR3477M product overview IRF PQFN-14
25% IR3871M IR3871M product overviewIR3871M product overview IRF PQFN-17
25% IR3876M IR3876M product overviewIR3876M product overview IRF PQFN-17
25% LTC3610 LTC3610 product overviewLTC3610 product overview Linear Technology QFN-64
50% IR3473M IR3473M product overviewIR3473M product overview IRF PQFN-14
50% IR3863M IR3863M product overviewIR3863M product overview IRF PQFN-17
50% IR3865M IR3865M product overviewIR3865M product overview IRF PQFN-17
50% LTC3608 LTC3608 product overviewLTC3608 product overview Linear Technology QFN-52
50% LTC3609 LTC3609 product overviewLTC3609 product overview Linear Technology QFN-52
50% BD95500 BD95500 product overviewBD95500 product overview Rohm QFN-40
50% TPS54020 TPS54020 product overviewTPS54020 product overview Texas Instruments VQFN-15

Inductor suggestions

Below you can find matching inductors from Wuerth Elektronik calculated on the maximum parameters of LTC3611.

V-IN max. 32 V, I-OUT 10 A, V-OUT min. 0.6 V, Frequency typ. 560 kHz
Order Code Spec L (µH) IR (A) ISAT (A) RDC (mΩ) L x W x H (mm)
744305033 0.3 28.0 26.0 0.16 13.5 x 13.3 x 5.2
744305040 0.4 28.0 20.0 0.16 13.5 x 13.3 x 5.2
744306030 0.3 26.0 24.0 0.30 10.5 x 10.3 x 5.5
744308033 0.3 27.0 30.0 0.37 10.1 x 7 x 7
744308040 0.4 25.0 26.0 0.37 10.1 x 7 x 7
7443081030 0.3 38.0 32.0 0.29 9.4 x 6.2 x 8.1
7443081040 0.4 38.0 21.0 0.29 9.4 x 6.2 x 8.1
744311047 0.4 19.0 25.0 1.85 7 x 6.9 x 4
744314047 0.5 18.0 20.0 1.35 7 x 6.9 x 5
744316033 0.3 18.5 20.0 1.75 5.5 x 5.3 x 4.3
744316047 0.5 15.0 16.0 2.75 5.5 x 5.3 x 4.3
7443340047 0.5 19.0 32.0 2.65 8.4 x 7.9 x 7.5
744373460047 0.5 11.5 31.0 4.00 7.3 x 6.6 x 3
744373490047 0.5 13.5 30.0 3.50 7.3 x 6.6 x 5
744373770047 0.5 19.0 29.0 1.32 13.5 x 12.6 x 3.5
74477009 0.5 23.5 26.4 2.90 12 x 12 x 8
7447797050 0.5 13.2 23.0 4.30 10.2 x 10.2 x 4.5
7447798050 0.5 18.5 18.0 2.20 10.2 x 10.2 x 6.4
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