LT3663 Buck Converter overview

Description

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Category
Sub-Category

LT3663 is a 36.00 V non-sync Buck Converter from with 1.20 A output current. The maximum 36.00 V input voltage can be regulated down into a 0.80 V to 20.00 V output voltage.

It requires are a typical inductor size of 6.80 µH, a typical external component count of 8 and achieves a peak efficiency of 86 %. Further LT3663 characteristics are a fixed 1500 kHz switching frequency and 1 available package option(s): DFN-8 .

For the LT3663 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. 7.50 V
V-IN max. 36.00 V
I-OUT? 1.20 A
V-OUT min. 0.80 V
V-OUT max. 20.00 V
V-OUT adjustable V
V-OUT programmable no
sync/non-sync non-sync
Frequency typ. 1500 kHz
Frequency fixed
Frequency selectable
ext.clock sync. no
Frequency adj./ ext.clock min.
Frequency adj./ ext.clock max
Softstart no
Softstart adjustable no
Tracking no
PG/Power OK no
Quiescent current max. 3200 µA
Operating min.
Operating max.
Junction min. -40 °C
Junction max. 150 °C
thermal shutdown typ.
Inductor size typ. 6.80 µH
Inductor suggested by Würth Elektronik
Automotive AEC-Q100 no
Light-Load-Mode no
Topology Buck
Peak Efficiency 86 %
Component count min. 8
current limit adjustable yes
Nr.of packages 1
CSP
SC70
SOT
MSOP
QFN/DFN DFN-8
SO/SOIC
SOP
DIP
TO
DDPAK

LT3663 Datasheet

Link to the most up-to-date LT3663 datasheet and the product page for EVM, tools and support information.

LT3663

LT3663 Sample stock and distributor price breaks

LT3663 prices and online available distributors.

OEMSecrets.com
findchips.com

Available Distributors with stock: 4

Chip One Stop (1)

ProductStockPriceBuy
LT3663EMS8E-5#PBF50
15.76 USD
105.53 USD
503.66 USD
Buy Now

Digi-Key (12)

ProductStockPriceBuy
LT3663EDCB#TRMPBF1500
5003.10 USD
Buy Now
LT3663EDCB#TRMPBF1851
16.23 USD
255.56 USD
1003.72 USD
2503.41 USD
Buy Now
LT3663EDCB#TRMPBF1851
16.23 USD
255.56 USD
1003.72 USD
2503.41 USD
Buy Now
LT3663EMS8E-5#PBF716
15.66 USD
253.78 USD
1003.22 USD
Buy Now
LT3663IMS8E#PBF404
16.66 USD
254.46 USD
1003.79 USD
Buy Now
LT3663EMS8E-3.3#PBF110
15.66 USD
253.78 USD
1003.22 USD
Buy Now
LT3663IMS8E-5#PBF247
16.66 USD
254.46 USD
1003.79 USD
Buy Now
DC1570A-B5
176.50 USD
10075.38 USD
Buy Now
LT3663IMS8E-3.3#PBF62
16.66 USD
254.46 USD
Buy Now
DC1570A-A5
176.50 USD
Buy Now
DC1419A2
176.50 USD
Buy Now
LT3663EMS8E#PBF0
15.66 USD
253.78 USD
1003.22 USD
Buy Now
LT3663EDCB#TRPBF0
25003.10 USD
Buy Now
LT3663EDCB#TRPBF0
16.11 USD
255.46 USD
1003.72 USD
2503.41 USD
Buy Now
LT3663EDCB#TRPBF0
16.11 USD
255.46 USD
1003.72 USD
2503.41 USD
Buy Now
LT3663HMS8E-3.3#PBF12
17.20 USD
254.82 USD
1004.10 USD
Buy Now
LT3663EDCB-3.3#TRPBF0
25003.10 USD
Buy Now
LT3663EDCB-3.3#TRMPBF0
5003.10 USD
Buy Now
LT3663EMS8E#TRPBF0
25003.33 USD
Buy Now
LT3663EMS8E-3.3#TRPBF0
25003.33 USD
Buy Now
LT3663EMS8E-5#TRPBF0
25003.33 USD
Buy Now
LT3663IDCB#TRPBF0
25003.64 USD
Buy Now
LT3663IDCB#TRMPBF0
5003.64 USD
Buy Now
LT3663IMS8E#TRPBF0
25003.90 USD
Buy Now
LT3663IMS8E-3.3#TRPBF0
25003.90 USD
Buy Now

Mouser Electronics (4)

ProductStockPriceBuy
LT3663EMS8E-5#PBF294
15.81 USD
105.33 USD
253.88 USD
1003.30 USD
Buy Now
LT3663EDCB#TRMPBF355
16.40 USD
105.94 USD
255.70 USD
1003.81 USD
2503.50 USD
5003.18 USD
Buy Now
LT3663IMS8E#PBF153
16.85 USD
106.28 USD
254.58 USD
1003.89 USD
Buy Now
LT3663EMS8E#PBF250 On Order
15.81 USD
105.33 USD
253.88 USD
1003.30 USD
Buy Now
LT3663EMS8E#TRPBFNone
25003.41 USD
Buy Now
LT3663IMS8E-5#PBFNone
2003.89 USD
Buy Now
LT3663EMS8E-5#TRPBFNone
25003.41 USD
Buy Now
LT3663IMS8E-3.3#PBFNone
2003.89 USD
Buy Now
LT3663EMS8E-3.3#PBFNone
2503.30 USD
Buy Now
LT3663HMS8E-5#PBFNone
2004.20 USD
Buy Now
LT3663HMS8E-3.3#PBFNone
2004.20 USD
Buy Now
LT3663HMS8E#PBFNone
2004.20 USD
Buy Now
LT3663EDCB-3.3#TRMPBFNone
5003.18 USD
Buy Now
LT3663IDCB#TRMPBFNone
5003.73 USD
Buy Now
LT3663EDCB-3.3#TRPBFNone
25003.18 USD
Buy Now
LT3663EDCB#TRPBFNone
25003.18 USD
Buy Now
LT3663EMS8E-3.3#TRPBFNone
25003.41 USD
Buy Now
LT3663IDCB#TRPBFNone
25003.73 USD
Buy Now
LT3663IMS8E-3.3#TRPBFNone
25004.00 USD
Buy Now
LT3663IMS8E-5#TRPBFNone
25004.00 USD
Buy Now
LT3663IMS8E#TRPBFNone
25004.00 USD
Buy Now
LT3663HMS8E-5#TRPBFNone
25004.30 USD
Buy Now
LT3663HMS8E-3.3#TRPBFNone
25004.30 USD
Buy Now
LT3663HMS8E#TRPBFNone
25004.30 USD
Buy Now

RS Components (1)

ProductStockPriceBuy
LT3663EMS8E#PBF52Buy Now

Available Distributors without stock: 2

Farnell Element14 (0)

ProductStockPriceBuy
LT3663EMS8E-3.3#PBF0Buy Now
LT3663EMS8E#PBF0Buy Now

Rutronik (0)

ProductStockPriceBuy
nnBuy Now

Available Distributors with stock: 5

Arrow Electronics

ProductStockPriceBuy
LT3663EDCB#TRPBF 5000
13.57 $
1003.04 $
Buy Now
LT3663IMS8E-5#TRPBF 2000
1003.82 $
Buy Now
LT3663IMS8E-5#PBF 33
14.37 $
1003.72 $
Buy Now
LT3663HMS8E-3.3#PBF 20
14.73 $
1004.02 $
Buy Now
LT3663EDCB#TRMPBF 5
13.57 $
1003.04 $
Buy Now
LT3663EDCB#TRMPBF 0
13.57 $
1003.04 $
Buy Now
LT3663EDCB#TRMPBF 0
13.57 $
1003.04 $
Buy Now
LT3663EDCB#TRPBF 0
13.57 $
1003.04 $
Buy Now
LT3663IMS8E-5#TRPBF 0
1003.82 $
Buy Now
LT3663IDCB#TRMPBF 0
14.20 $
1003.57 $
Buy Now
LT3663EMS8E#TRPBF 0
1003.26 $
Buy Now
LT3663IMS8E-3.3#PBF 0
14.37 $
1003.72 $
Buy Now
LT3663EMS8E#PBF 0
13.71 $
1003.16 $
Buy Now
LT3663IMS8E#TRPBF 0
1003.82 $
Buy Now
LT3663IMS8E#PBF 0
14.37 $
1003.72 $
Buy Now
show stock=0hide stock=0

Digi-Key

ProductStockPriceBuy
LT3663EDCB#TRMPBF 1851
2502.91 €
1003.17 €
254.74 €
15.31 €
Buy Now
LT3663EDCB#TRMPBF 1851
2502.91 €
1003.17 €
254.74 €
15.31 €
Buy Now
LT3663EDCB#TRMPBF 1500
5002.64 €
Buy Now
LT3663EMS8E-5#PBF 716
1002.75 €
253.23 €
14.83 €
Buy Now
LT3663IMS8E#PBF 404
1003.24 €
253.80 €
15.68 €
Buy Now
LT3663IMS8E-5#PBF 247
1003.24 €
253.80 €
15.68 €
Buy Now
LT3663EMS8E-3.3#PBF 110
1002.75 €
253.23 €
14.83 €
Buy Now
LT3663IMS8E-3.3#PBF 62
253.80 €
15.68 €
Buy Now
DC1570A-B 5
10064.29 €
165.25 €
Buy Now
DC1570A-A 5
165.25 €
Buy Now
DC1419A 2
165.25 €
Buy Now
LT3663EMS8E#PBF 0
1002.75 €
253.23 €
14.83 €
Buy Now
LT3663EDCB#TRPBF 0
25002.64 €
Buy Now
LT3663EDCB#TRPBF 0
2502.91 €
1003.17 €
254.66 €
15.21 €
Buy Now
LT3663EDCB#TRPBF 0
2502.91 €
1003.17 €
254.66 €
15.21 €
Buy Now
show stock=0hide stock=0

Mouser Electronics

ProductStockPriceBuy
LT3663EMS8E-5#PBF 294
15.67 $
105.20 $
253.78 $
1003.22 $
Buy Now
LT3663EDCB#TRMPBF 355
16.24 $
105.79 $
255.56 $
1003.72 $
2503.41 $
5003.10 $
Buy Now
LT3663IMS8E#PBF 153
16.68 $
106.12 $
254.46 $
1003.79 $
Buy Now
LT3663EMS8E#PBF 0
15.67 $
105.20 $
253.78 $
1003.22 $
Buy Now
LT3663EMS8E#TRPBF 0
25003.33 $
Buy Now
LT3663IMS8E-5#PBF 0
2003.79 $
Buy Now
LT3663EMS8E-5#TRPBF 0
25003.33 $
Buy Now
LT3663IMS8E-3.3#PBF 0
2003.79 $
Buy Now
LT3663EMS8E-3.3#PBF 0
2503.22 $
Buy Now
LT3663HMS8E#PBF 0
2004.10 $
Buy Now
LT3663HMS8E-3.3#PBF 0
2004.10 $
Buy Now
LT3663HMS8E-5#PBF 0
2004.10 $
Buy Now
LT3663EDCB-3.3#TRMPBF 0
5003.10 $
Buy Now
LT3663IDCB#TRMPBF 0
5003.64 $
Buy Now
LT3663EDCB-3.3#TRPBF 0
25003.10 $
Buy Now
show stock=0hide stock=0

Chip1Stop

ProductStockPriceBuy
LT3663EMS8E-5#PBF 50
503.66 $
105.53 $
15.76 $
Buy Now

RS Components

ProductStockPriceBuy
LT3663EMS8E#PBF 52
105.34 GBP
254.39 GBP
Buy Now

Available Distributors without stock: 1

Farnell element14

ProductStockPriceBuy
LT3663EMS8E-3.3#PBF 0
14.80 GBP
252.90 GBP
1002.58 GBP
Buy Now

List of equivalents and alternatives

The following DC/DC Buck Converter are similar to LT3663. Optional, compare LT3663 side-by-side with other Buck Converter via the Comparison function.

Variation Compare Product Manufacturer Package
10% ACT4513 ACT4513 product overviewACT4513 product overview Active Semi SOP-8
10% ACT4514 ACT4514 product overviewACT4514 product overview Active Semi SOP-8
10% ACT4515 ACT4515 product overviewACT4515 product overview Active Semi SOP-8
10% SD45216 SD45216 product overviewSD45216 product overview Silan Micro ESOP-8
25% ACT4501 ACT4501 product overviewACT4501 product overview Active Semi SOP-8
25% SD45215 SD45215 product overviewSD45215 product overview Silan Micro SOP-8
50% AS1341 AS1341 product overviewAS1341 product overview AMS DFN-8
50% ADP1111 ADP1111 product overviewADP1111 product overview Analog Devices PDIP-8, SO-8
50% MAX1776 MAX1776 product overviewMAX1776 product overview Maxim u00b5MAX-8
50% MIC4682 MIC4682 product overviewMIC4682 product overview Micrel SOIC-8
50% A6902D A6902D product overviewA6902D product overview ST SO-8
50% L6902 L6902 product overviewL6902 product overview ST SO-8

Inductor suggestions

Below you can find matching inductors from Wuerth Elektronik calculated on the maximum parameters of LT3663.

V-IN max. 36 V, I-OUT 1.2 A, V-OUT min. 0.8 V, Frequency typ. 1500 kHz
Order Code Spec L (µH) IR (A) ISAT (A) RDC (mΩ) L x W x H (mm)
744025001 1.2 2.6 3.0 36.00 2.8 x 2.8 x 3
744031001 1.5 1.8 1.6 40.00 3.8 x 3.8 x 1.8
74404024015 1.5 1.9 2.4 65.00 2.5 x 2 x 1.2
74404032015 1.5 2.0 2.3 40.00 3 x 3 x 1.5
7440420018 1.8 2.4 2.4 40.00 4.8 x 4.8 x 2
7440430012 1.2 3.1 2.8 15.00 4.8 x 4.8 x 3
7440430018 1.8 2.7 2.5 20.00 4.8 x 4.8 x 3
7440520018 1.8 2.6 3.0 30.00 5.8 x 5.8 x 2
7440680017 1.7 2.5 2.4 41.00 8 x 8 x 1.2
74438343015 1.5 1.3 3.0 150.00 2.5 x 1.6 x 0.6
74479976215 1.5 1.6 1.9 100.00 2 x 1.6 x 0.5
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