LT3663-3.3 Buck Converter overview

Description

Manufacturer
 
Category
Sub-Category

LT3663-3.3 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 3.30 V to 3.30 V output voltage.

It requires are a typical inductor size of 6.80 µH, a typical external component count of 6 and achieves a peak efficiency of 86 %. Further LT3663-3.3 characteristics are a fixed 1500 kHz switching frequency and 1 available package option(s): DFN-8 .

For the LT3663-3.3 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. 3.30 V
V-OUT max. 3.30 V
V-OUT 3.300 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. 6
current limit adjustable yes
Nr.of packages 1
CSP
SC70
SOT
MSOP
QFN/DFN DFN-8
SO/SOIC
SOP
DIP
TO
DDPAK

LT3663-3.3 Datasheet

Link to the most up-to-date LT3663-3.3 datasheet and the product page for EVM, tools and support information.

LT3663-3.3

LT3663-3.3 Sample stock and distributor price breaks

LT3663-3.3 prices and online available distributors.

OEMSecrets.com
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Available Distributors with stock: 3

Digi-Key (12)

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LT3663EDCB#TRMPBF1500
5003.10 USD
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LT3663EDCB#TRMPBF1851
16.23 USD
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LT3663EDCB#TRMPBF1851
16.23 USD
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LT3663EMS8E-5#PBF716
15.66 USD
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LT3663IMS8E#PBF404
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LT3663EMS8E-3.3#PBF110
15.66 USD
253.78 USD
1003.22 USD
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LT3663IMS8E-5#PBF247
16.66 USD
254.46 USD
1003.79 USD
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DC1570A-B5
176.50 USD
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LT3663IMS8E-3.3#PBF62
16.66 USD
254.46 USD
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DC1570A-A5
176.50 USD
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DC1419A2
176.50 USD
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LT3663EMS8E#PBF0
15.66 USD
253.78 USD
1003.22 USD
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LT3663EDCB#TRPBF0
25003.10 USD
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LT3663EDCB#TRPBF0
16.11 USD
255.46 USD
1003.72 USD
2503.41 USD
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LT3663EDCB#TRPBF0
16.11 USD
255.46 USD
1003.72 USD
2503.41 USD
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LT3663HMS8E-3.3#PBF12
17.20 USD
254.82 USD
1004.10 USD
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LT3663EDCB-3.3#TRPBF0
25003.10 USD
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LT3663EDCB-3.3#TRMPBF0
5003.10 USD
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LT3663EMS8E#TRPBF0
25003.33 USD
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LT3663EMS8E-3.3#TRPBF0
25003.33 USD
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LT3663EMS8E-5#TRPBF0
25003.33 USD
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LT3663IDCB#TRPBF0
25003.64 USD
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LT3663IDCB#TRMPBF0
5003.64 USD
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LT3663IMS8E#TRPBF0
25003.90 USD
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LT3663IMS8E-3.3#TRPBF0
25003.90 USD
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Mouser Electronics (4)

ProductStockPriceBuy
LT3663EMS8E-5#PBF294
15.81 USD
105.33 USD
253.88 USD
1003.30 USD
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LT3663EDCB#TRMPBF355
16.40 USD
105.94 USD
255.70 USD
1003.81 USD
2503.50 USD
5003.18 USD
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LT3663IMS8E#PBF173
16.85 USD
106.28 USD
254.58 USD
1003.89 USD
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LT3663EMS8E#PBF250 On Order
15.81 USD
105.33 USD
253.88 USD
1003.30 USD
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LT3663EMS8E#TRPBFNone
25003.41 USD
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LT3663IMS8E-5#PBFNone
2003.89 USD
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LT3663EMS8E-5#TRPBFNone
25003.41 USD
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LT3663IMS8E-3.3#PBFNone
2003.89 USD
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LT3663EMS8E-3.3#PBFNone
2503.30 USD
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LT3663HMS8E#PBFNone
2004.20 USD
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LT3663HMS8E-5#PBFNone
2004.20 USD
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LT3663HMS8E-3.3#PBFNone
2004.20 USD
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LT3663EDCB-3.3#TRMPBFNone
5003.18 USD
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LT3663IDCB#TRMPBFNone
5003.73 USD
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LT3663EDCB#TRPBFNone
25003.18 USD
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LT3663EDCB-3.3#TRPBFNone
25003.18 USD
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LT3663EMS8E-3.3#TRPBFNone
25003.41 USD
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LT3663IDCB#TRPBFNone
25003.73 USD
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LT3663IMS8E-5#TRPBFNone
25004.00 USD
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LT3663IMS8E-3.3#TRPBFNone
25004.00 USD
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LT3663IMS8E#TRPBFNone
25004.00 USD
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LT3663HMS8E-5#TRPBFNone
25004.30 USD
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LT3663HMS8E-3.3#TRPBFNone
25004.30 USD
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LT3663HMS8E#TRPBFNone
25004.30 USD
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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 $
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LT3663IMS8E-5#TRPBF 2000
1003.82 $
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LT3663IMS8E-5#PBF 33
14.37 $
1003.72 $
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LT3663HMS8E-3.3#PBF 20
14.73 $
1004.02 $
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LT3663EDCB#TRMPBF 5
13.57 $
1003.04 $
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LT3663EDCB#TRMPBF 0
13.57 $
1003.04 $
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LT3663EDCB#TRMPBF 0
13.57 $
1003.04 $
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LT3663IMS8E-5#TRPBF 0
1003.82 $
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LT3663EDCB#TRPBF 0
13.57 $
1003.04 $
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LT3663IDCB#TRMPBF 0
14.20 $
1003.57 $
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LT3663EMS8E#TRPBF 0
1003.26 $
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LT3663IMS8E-3.3#PBF 0
14.37 $
1003.72 $
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LT3663EMS8E#PBF 0
13.71 $
1003.16 $
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LT3663IMS8E#TRPBF 0
1003.82 $
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LT3663IMS8E#PBF 0
14.37 $
1003.72 $
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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 €
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LT3663EDCB#TRMPBF 1500
5002.64 €
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LT3663EMS8E-5#PBF 716
1002.75 €
253.23 €
14.83 €
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LT3663IMS8E#PBF 404
1003.24 €
253.80 €
15.68 €
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LT3663IMS8E-5#PBF 247
1003.24 €
253.80 €
15.68 €
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LT3663EMS8E-3.3#PBF 110
1002.75 €
253.23 €
14.83 €
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LT3663IMS8E-3.3#PBF 62
253.80 €
15.68 €
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DC1570A-B 5
10064.29 €
165.25 €
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DC1570A-A 5
165.25 €
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DC1419A 2
165.25 €
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LT3663EMS8E#PBF 0
1002.75 €
253.23 €
14.83 €
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LT3663EDCB#TRPBF 0
25002.64 €
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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 173
16.68 $
106.12 $
254.46 $
1003.79 $
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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 $
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LT3663EMS8E-5#TRPBF 0
25003.33 $
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LT3663IMS8E-3.3#PBF 0
2003.79 $
Buy Now
LT3663EMS8E-3.3#PBF 0
2503.22 $
Buy Now
LT3663HMS8E-3.3#PBF 0
2004.10 $
Buy Now
LT3663HMS8E#PBF 0
2004.10 $
Buy Now
LT3663HMS8E-5#PBF 0
2004.10 $
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LT3663EDCB-3.3#TRMPBF 0
5003.10 $
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LT3663IDCB#TRMPBF 0
5003.64 $
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LT3663EDCB#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 LT3663-3.3. Optional, compare LT3663-3.3 side-by-side with other Buck Converter via the Comparison function.

no alternatives found

Inductor suggestions

Below you can find matching inductors from Wuerth Elektronik calculated on the maximum parameters of LT3663-3.3.

V-IN max. 36 V, I-OUT 1.2 A, V-OUT min. 3.3 V, Frequency typ. 1500 kHz
Order Code Spec L (µH) IR (A) ISAT (A) RDC (mΩ) L x W x H (mm)
744025003 3.3 1.5 1.8 85.00 2.8 x 2.8 x 3
744025004 4.7 1.4 1.7 100.00 2.8 x 2.8 x 3
74404032033 3.3 1.5 1.5 70.00 3 x 3 x 1.5
74404041033 3.3 1.8 2.1 69.00 4 x 4 x 1.2
74404041047 4.7 1.6 1.9 91.00 4 x 4 x 1.2
74404042033 3.3 2.0 2.9 55.00 4 x 4 x 1.8
74404042047 4.7 1.7 2.2 70.00 4 x 4 x 1.8
74404052033 3.3 2.6 3.0 42.20 5 x 5 x 2
74404052039 3.9 2.4 2.8 50.50 5 x 5 x 2
74404052047 4.7 2.3 2.7 55.90 5 x 5 x 2
74404052056 5.6 2.1 2.6 67.50 5 x 5 x 2
744042003 3.3 2.0 1.8 50.00 4.8 x 4.8 x 2
7440420039 3.9 1.8 1.7 60.00 4.8 x 4.8 x 2
744042004 4.7 1.7 1.7 70.00 4.8 x 4.8 x 2
744043003 3.3 2.2 1.8 30.00 4.8 x 4.8 x 3
7440430039 3.9 1.7 1.7 50.00 4.8 x 4.8 x 3
744043004 4.7 1.6 1.7 50.00 4.8 x 4.8 x 3
744045003 3.3 1.4 2.7 104.00 4.5 x 3.2 x 2.9
7440450039 3.9 1.3 2.5 112.00 4.5 x 3.2 x 2.9
744045004 4.7 1.2 2.0 120.00 4.5 x 3.2 x 2.9
7440520039 3.9 2.0 2.1 50.00 5.8 x 5.8 x 2
744052005 5.0 1.7 1.8 50.00 5.8 x 5.8 x 2
744053004 4.2 2.5 2.2 30.00 5.8 x 5.8 x 3
7440530047 4.7 2.4 2.0 30.00 5.8 x 5.8 x 3
744053005 5.3 2.3 1.9 30.00 5.8 x 5.8 x 3
744062003 3.3 2.8 2.5 20.00 6.8 x 6.8 x 2.5
744062005 5.0 2.2 2.0 40.00 6.8 x 6.8 x 2.5
7440680033 3.3 2.0 1.8 61.00 8 x 8 x 1.2
7440680047 4.7 1.9 1.6 72.00 8 x 8 x 1.2
7440690033 3.3 2.6 2.3 42.00 8 x 8 x 1.5
7440690047 4.7 2.2 1.8 56.00 8 x 8 x 1.5
7440700033 3.3 3.2 2.6 30.00 8 x 8 x 2
7440700047 4.7 3.0 2.2 37.00 8 x 8 x 2
7440700056 5.6 2.6 2.0 47.00 8 x 8 x 2
74408941035 3.5 1.5 2.8 113.00 4.8 x 4.8 x 2.1
74408941050 5.0 1.4 2.5 140.00 4.8 x 4.8 x 2.1
74408942047 4.7 1.6 2.9 86.80 4.8 x 4.8 x 3.1
74437321056 5.6 1.6 2.7 180.00 4.45 x 4.06 x 1.2
74438323033 3.3 1.3 2.1 220.00 2.5 x 2 x 1
74438324033 3.3 1.3 2.6 226.00 2.5 x 2 x 1.2
74438335047 4.7 1.5 2.8 141.00 3 x 3 x 1.5
744773033 3.3 2.0 2.9 41.00 4 x 4.5 x 3.5
744773039 3.9 1.9 2.6 54.00 4 x 4.5 x 3.5
744773047 4.7 1.8 2.5 59.00 4 x 4.5 x 3.5
744773056 5.6 1.6 2.4 69.00 4 x 4.5 x 3.5
7447785003 3.3 2.8 3.0 43.00 5.9 x 6.2 x 3.3
7447785004 4.7 2.2 2.5 60.00 5.9 x 6.2 x 3.3
7447786004 4.7 2.8 2.8 57.00 5.9 x 6.2 x 5.1
78438323033 3.3 1.3 2.1 220.00 2.5 x 2 x 1
78438335047 4.7 1.5 2.8 141.00 3 x 3 x 1.5
784773033 3.3 2.0 2.9 41.00 4 x 4.5 x 3.5
784773039 3.9 1.9 2.6 54.00 4 x 4.5 x 3.5
784773047 4.7 1.8 2.5 59.00 4 x 4.5 x 3.5
784773056 5.6 1.6 2.4 69.00 4 x 4.5 x 3.5
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