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: 5

ARROW-NAC (2)

ProductStockPriceBuy
LTC3611EWP480
182.90 USD
1042.88 USD
5033.60 USD
10021.82 USD
50021.54 USD
100021.40 USD
250021.26 USD
500021.19 USD
1000021.13 USD
2500020.99 USD
Buy Now
LTC3611EWP#PBF468
113.93 USD
10011.84 USD
Buy Now

Chip-One-Stop (3)

ProductStockPriceBuy
LTC3611EWP320
32020.60 USD
Buy Now
LTC3611EWP#PBF1056
118.10 USD
517.60 USD
1016.80 USD
2516.40 USD
5015.60 USD
10015.20 USD
Buy Now
LTC3611IWP#PBF38
120.80 USD
520.30 USD
1019.40 USD
2518.90 USD
Buy Now

Element14 (1)

ProductStockPriceBuy
LTC3611EWP#PBF56
126.43 USD
2522.10 USD
10018.79 USD
Buy Now
LTC3611IWP#PBF0
130.40 USD
2525.42 USD
10021.59 USD
Buy Now

FARNELL-ELEMENT14 (1)

ProductStockPriceBuy
LTC3611EWP#PBF57Buy Now

RS-COMPONENTS (1)

ProductStockPriceBuy
LTC3611EWP#PBF51Buy Now

Available Distributors with stock: 0

no online Distributor with LTC3611 stock available

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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