LT3990-3.3 Buck Converter overview

Description

Manufacturer
 
Category
Sub-Category

LT3990-3.3 is a 62.00 V sync Buck Converter from with 0.35 A output current. The maximum 62.00 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 33.00 µH, a typical external component count of 5 and achieves a peak efficiency of 83 %. Further LT3990-3.3 characteristics are a adjustable 840 kHz switching frequency and 1 available package option(s): MSOP-16 .

For the LT3990-3.3 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. 4.00 V
V-IN max. 62.00 V
I-OUT? 0.35 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 sync
Frequency typ. 840 kHz
Frequency adjustable
Frequency selectable
ext.clock sync. no
Frequency adj./ ext.clock min. 200 kHz
Frequency adj./ ext.clock max 2200 kHz
Softstart no
Softstart adjustable no
Tracking no
PG/Power OK yes
Quiescent current max. 4 µA
Operating min.
Operating max.
Junction min. -40 °C
Junction max. 125 °C
thermal shutdown typ.
Inductor size typ. 33.00 µH
Inductor suggested by Würth Elektronik
Automotive AEC-Q100 no
Light-Load-Mode yes
Topology Buck
Peak Efficiency 83 %
Component count min. 5
current limit adjustable no
Nr.of packages 1
CSP
SC70
SOT
MSOP MSOP-16
QFN/DFN
SO/SOIC
SOP
DIP
TO
DDPAK

LT3990-3.3 Datasheet

Link to the most up-to-date LT3990-3.3 datasheet and the product page for EVM, tools and support information.

LT3990-3.3

LT3990-3.3 Sample stock and distributor price breaks

LT3990-3.3 prices and online available distributors.

OEMSecrets.com
findchips.com

Available Distributors with stock: 7

Chip One Stop (12)

ProductStockPriceBuy
LT3990EDD#PBF285
15.84 USD
104.24 USD
503.59 USD
1003.24 USD
2423.21 USD
Buy Now
LT3990EDD#PBF2020
13.87 USD
1003.63 USD
Buy Now
LT3990EMSE-3.3#PBF925
14.24 USD
1003.98 USD
Buy Now
LT3990HMSE-3.3#PBF5
14.69 USD
Buy Now
LT3990HMSE-3.3#PBF5
14.69 USD
Buy Now
LT3990HMSE-5#PBF37
17.48 USD
104.80 USD
374.48 USD
Buy Now
LT3990HMSE#PBF37
17.22 USD
104.64 USD
374.33 USD
Buy Now
LT3990HMSE#PBF761
14.68 USD
1004.46 USD
Buy Now
LT3990IDD#PBF96
14.29 USD
Buy Now
LT3990IMSE-3.3#PBF4
14.40 USD
Buy Now
LT3990IMSE-5#PBF21
16.87 USD
104.42 USD
Buy Now
LT3990IMSE-5#PBF5
14.40 USD
Buy Now

Digi-Key (11)

ProductStockPriceBuy
LT3990EDD#PBF2863
15.56 USD
253.71 USD
1003.16 USD
Buy Now
LT3990EMSE#PBF6025
15.66 USD
253.78 USD
1003.22 USD
Buy Now
LT3990EMSE-3.3#PBF701
15.66 USD
253.78 USD
1003.22 USD
Buy Now
LT3990IDD#PBF464
16.18 USD
254.12 USD
1003.51 USD
Buy Now
LT3990IMSE-5#PBF3112
16.30 USD
254.21 USD
1003.58 USD
Buy Now
LT3990HMSE#PBF718
16.84 USD
254.58 USD
1003.89 USD
Buy Now
LT3990HMSE-3.3#PBF480
16.84 USD
254.58 USD
1003.89 USD
Buy Now
LT3990IMSE-3.3#PBF347
16.30 USD
254.21 USD
1003.58 USD
Buy Now
LT3990HMSE-5#PBF1482
16.84 USD
254.58 USD
1003.89 USD
Buy Now
LT3990EMSE#TRPBF0
25003.33 USD
Buy Now
LT3990EMSE#TRPBF1286
16.49 USD
255.79 USD
1003.99 USD
2503.66 USD
Buy Now
LT3990EMSE#TRPBF1286
16.49 USD
255.79 USD
1003.99 USD
2503.66 USD
Buy Now
LT3990EMSE-5#PBF0
15.66 USD
253.78 USD
1003.22 USD
Buy Now
LT3990IMSE#PBF0
16.30 USD
254.21 USD
1003.58 USD
Buy Now
LT3990EDD#TRPBF0
25003.26 USD
Buy Now
LT3990EDD#TRPBF0
16.37 USD
255.69 USD
1003.92 USD
2503.59 USD
Buy Now
LT3990EDD#TRPBF0
16.37 USD
255.69 USD
1003.92 USD
2503.59 USD
Buy Now
LT3990IDD#TRPBF0
25003.61 USD
Buy Now
LT3990IDD#TRPBF0
17.06 USD
256.30 USD
1004.33 USD
2503.97 USD
Buy Now
LT3990IDD#TRPBF0
17.06 USD
256.30 USD
1004.33 USD
2503.97 USD
Buy Now
LT3990EMSE-3.3#TRPBF0
25003.33 USD
Buy Now
LT3990EMSE-5#TRPBF0
25003.33 USD
Buy Now
LT3990IMSE#TRPBF0
25003.68 USD
Buy Now
LT3990IMSE-3.3#TRPBF0
25003.68 USD
Buy Now
LT3990IMSE-5#TRPBF0
25003.68 USD
Buy Now

Distrelec (1)

ProductStockPriceBuy
LT3990EDD#PBF112Buy Now

Element14 (3)

ProductStockPriceBuy
LT3990EMSE#PBF197
18.84 USD
255.91 USD
1005.03 USD
Buy Now
LT3990HMSE-5#PBF3
110.67 USD
257.15 USD
1006.06 USD
Buy Now
LT3990HMSE#PBF116
110.67 USD
257.15 USD
1006.06 USD
Buy Now

Farnell Element14 (4)

ProductStockPriceBuy
LT3990EMSE-3.3#PBF41Buy Now
LT3990EMSE-5#PBF0Buy Now
LT3990EMSE#PBF211Buy Now
LT3990HMSE-3.3#PBF0Buy Now
LT3990HMSE-5#PBF7Buy Now
LT3990HMSE#PBF116Buy Now
LT3990IDD#PBF0Buy Now
LT3990IMSE-3.3#PBF0Buy Now
LT3990IMSE-5#PBF0Buy Now

Newark Electronics (1)

ProductStockPriceBuy
LT3990EDD#PBF2
15.46 USD
253.66 USD
1003.10 USD
Buy Now

RS Components (5)

ProductStockPriceBuy
LT3990EDD#PBF27Buy Now
LT3990EDD#PBF222Buy Now
LT3990EMSE#PBF139Buy Now
LT3990IDD#PBF16Buy Now
LT3990IMSE#PBF50Buy Now

Available Distributors with stock: 8

Arrow Electronics

ProductStockPriceBuy
LT3990EMSE-5#PBF 1517
13.71 $
1003.16 $
Buy Now
LT3990EMSE-3.3#PBF 925
13.71 $
1003.16 $
Buy Now
LT3990HMSE#PBF 761
14.49 $
1003.81 $
Buy Now
LT3990HMSE-5#PBF 632
14.49 $
1003.81 $
Buy Now
LT3990IDD#PBF 96
14.04 $
1003.44 $
Buy Now
LT3990IMSE#PBF 94
14.13 $
1003.51 $
Buy Now
LT3990HMSE-3.3#PBF 7
14.49 $
1003.81 $
Buy Now
LT3990HMSE-3.3#PBF 5
14.49 $
1003.81 $
Buy Now
LT3990IMSE-5#PBF 5
14.13 $
1003.51 $
Buy Now
LT3990IMSE-3.3#PBF 4
14.13 $
1003.51 $
Buy Now
LT3990HMSE-5#PBF 0
14.49 $
1003.81 $
Buy Now
LT3990EMSE-3.3#PBF 0
13.71 $
1003.16 $
Buy Now
LT3990IMSE-5#PBF 0
14.13 $
1003.51 $
Buy Now
LT3990IMSE-5#PBF 0
14.13 $
1003.51 $
Buy Now
LT3990EDD#PBF 0
13.64 $
1003.10 $
Buy Now
show stock=0hide stock=0

Digi-Key

ProductStockPriceBuy
LT3990EMSE#PBF 6025
1002.59 €
253.04 €
14.55 €
Buy Now
LT3990IMSE-5#PBF 3112
1002.88 €
253.39 €
15.07 €
Buy Now
LT3990EDD#PBF 2863
1002.54 €
252.99 €
14.47 €
Buy Now
LT3990HMSE-5#PBF 1482
1003.13 €
253.68 €
15.50 €
Buy Now
LT3990EMSE#TRPBF 1286
2502.94 €
1003.21 €
254.66 €
15.22 €
Buy Now
LT3990EMSE#TRPBF 1286
2502.94 €
1003.21 €
254.66 €
15.22 €
Buy Now
LT3990HMSE#PBF 718
1003.13 €
253.68 €
15.50 €
Buy Now
LT3990EMSE-3.3#PBF 701
1002.59 €
253.04 €
14.55 €
Buy Now
LT3990HMSE-3.3#PBF 480
1003.13 €
253.68 €
15.50 €
Buy Now
LT3990IDD#PBF 464
1002.82 €
253.31 €
14.97 €
Buy Now
LT3990IMSE-3.3#PBF 347
1002.88 €
253.39 €
15.07 €
Buy Now
LT3990EMSE#TRPBF 0
25002.67 €
Buy Now
LT3990EMSE-5#PBF 0
1002.59 €
253.04 €
14.55 €
Buy Now
LT3990IMSE#PBF 0
1002.88 €
253.39 €
15.07 €
Buy Now
LT3990EDD#TRPBF 0
25002.63 €
Buy Now
show stock=0hide stock=0

Newark element14

ProductStockPriceBuy
LT3990EDD#PBF 2
15.46 $
253.66 $
1003.10 $
Buy Now

Mouser Electronics

ProductStockPriceBuy
LT3990EDD#PBF 498
15.57 $
105.11 $
253.71 $
1003.16 $
Buy Now
LT3990EMSE#PBF 715
15.67 $
105.20 $
253.78 $
1003.22 $
Buy Now
LT3990IMSE-5#PBF 225
16.32 $
105.79 $
254.21 $
1003.58 $
Buy Now
LT3990HMSE#PBF 222
16.85 $
106.28 $
254.58 $
1003.89 $
Buy Now
LT3990IDD#PBF 287
16.19 $
105.67 $
254.12 $
1003.51 $
Buy Now
LT3990HMSE-5#PBF 64
16.85 $
106.28 $
254.58 $
1003.89 $
Buy Now
LT3990EDD#TRPBF 0
16.38 $
105.92 $
255.69 $
1003.92 $
2503.59 $
Buy Now
LT3990EMSE-3.3#PBF 0
15.67 $
105.20 $
253.78 $
1003.22 $
Buy Now
LT3990IMSE#PBF 0
16.32 $
105.79 $
254.21 $
1003.58 $
Buy Now
LT3990IDD#TRPBF 0
17.07 $
106.56 $
256.30 $
1004.33 $
2503.97 $
Buy Now
LT3990EMSE-5#PBF 0
15.67 $
105.20 $
253.78 $
1003.22 $
Buy Now
LT3990EMSE#TRPBF 0
16.49 $
106.03 $
255.79 $
1003.99 $
2503.66 $
Buy Now
LT3990IMSE-3.3#TRPBF 0
17.21 $
106.69 $
256.43 $
1004.42 $
2504.05 $
Buy Now
LT3990IMSE-5#TRPBF 0
17.21 $
106.69 $
256.43 $
1004.42 $
2504.05 $
Buy Now
LT3990HMSE-5#TRPBF 0
17.82 $
107.25 $
256.97 $
1004.79 $
2504.39 $
Buy Now
show stock=0hide stock=0

element14 Asia-Pacific

ProductStockPriceBuy
LT3990IDD#PBF 0
17.71 $
255.14 $
1004.38 $
Buy Now
LT3990IMSE-5#PBF 0
17.86 $
255.26 $
1004.47 $
Buy Now
LT3990EMSE-3.3#PBF 0
17.07 $
254.73 $
1004.02 $
Buy Now
LT3990HMSE-5#PBF 3
18.54 $
255.72 $
1004.84 $
Buy Now
LT3990EMSE#PBF 197
17.07 $
254.73 $
1004.02 $
Buy Now
LT3990HMSE-3.3#PBF 0
18.54 $
255.72 $
1004.84 $
Buy Now
LT3990EMSE-5#PBF 0
17.07 $
254.73 $
1004.02 $
Buy Now
LT3990HMSE#PBF 116
18.54 $
255.72 $
1004.84 $
Buy Now
show stock=0hide stock=0

Farnell element14

ProductStockPriceBuy
LT3990EMSE-3.3#PBF 1
14.70 GBP
104.24 GBP
252.62 GBP
502.61 GBP
1002.60 GBP
Buy Now
LT3990HMSE-5#PBF 7
15.64 GBP
105.13 GBP
253.15 GBP
503.14 GBP
1003.13 GBP
Buy Now
LT3990EMSE#PBF 211
14.70 GBP
104.24 GBP
252.62 GBP
502.61 GBP
1002.60 GBP
Buy Now
LT3990HMSE#PBF 116
15.62 GBP
253.25 GBP
1002.95 GBP
Buy Now

Chip1Stop

ProductStockPriceBuy
LT3990HMSE-3.3#PBF 5
14.69 $
Buy Now
LT3990EDD#PBF 285
2423.21 $
503.59 $
15.84 $
Buy Now
LT3990EMSE-3.3#PBF 925
1003.98 $
14.24 $
Buy Now
LT3990HMSE#PBF 37
374.33 $
104.64 $
17.22 $
Buy Now
LT3990HMSE-5#PBF 37
374.48 $
104.80 $
17.48 $
Buy Now
LT3990IDD#PBF 96
14.29 $
Buy Now
LT3990IMSE-3.3#PBF 4
14.40 $
Buy Now
LT3990IMSE-5#PBF 21
104.42 $
16.87 $
Buy Now
LT3990IMSE-5#PBF 5
14.40 $
Buy Now
LT3990HMSE#PBF 761
1004.46 $
14.68 $
Buy Now

RS Components

ProductStockPriceBuy
LT3990IDD#PBF 16
103.63 GBP
253.59 GBP
503.54 GBP
753.50 GBP
Buy Now
LT3990EDD#PBF 222
65.20 GBP
304.68 GBP
614.16 GBP
Buy Now
LT3990EDD#PBF 27
15.72 GBP
65.20 GBP
304.68 GBP
614.16 GBP
Buy Now
LT3990IMSE#PBF 50
105.56 GBP
255.46 GBP
505.40 GBP
755.34 GBP
Buy Now
LT3990EMSE#PBF 139
104.80 GBP
254.44 GBP
504.38 GBP
754.32 GBP
Buy Now

List of equivalents and alternatives

The following DC/DC Buck Converter are similar to LT3990-3.3. Optional, compare LT3990-3.3 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 LT3990-3.3.

V-IN max. 62 V, I-OUT 0.35 A, V-OUT min. 3.3 V, Frequency typ. 840 kHz
Order Code Spec L (µH) IR (A) ISAT (A) RDC (mΩ) L x W x H (mm)
744025220 22.0 0.5 0.8 525.00 2.8 x 2.8 x 3
744025270 27.0 0.5 0.7 745.00 2.8 x 2.8 x 3
744025330 33.0 0.4 0.6 840.00 2.8 x 2.8 x 3
74404024220 22.0 0.5 0.6 910.00 2.5 x 2 x 1.2
74404032220 22.0 0.6 0.6 450.00 3 x 3 x 1.5
74404032330 33.0 0.5 0.5 911.00 3 x 3 x 1.5
74404041330 33.0 0.7 0.6 628.00 4 x 4 x 1.2
74404042330 33.0 0.7 0.9 460.00 4 x 4 x 1.8
744042220 22.0 0.9 0.6 280.00 4.8 x 4.8 x 2
744042330 33.0 0.7 0.5 382.00 4.8 x 4.8 x 2
744043220 22.0 0.9 0.7 160.00 4.8 x 4.8 x 3
744043270 27.0 0.9 0.6 170.00 4.8 x 4.8 x 3
744043330 33.0 0.8 0.6 195.00 4.8 x 4.8 x 3
744045220 22.0 0.6 1.0 560.00 4.5 x 3.2 x 2.9
744045330 33.0 0.4 0.9 880.00 4.5 x 3.2 x 2.9
744052220 22.0 0.8 0.9 240.00 5.8 x 5.8 x 2
744052270 27.0 0.8 0.8 250.00 5.8 x 5.8 x 2
744053220 22.0 1.2 0.9 100.00 5.8 x 5.8 x 3
744053270 27.0 1.1 0.8 135.00 5.8 x 5.8 x 3
744053330 33.0 0.9 0.8 180.00 5.8 x 5.8 x 3
744062220 22.0 1.2 1.0 100.00 6.8 x 6.8 x 2.5
744062330 33.0 0.9 0.8 150.00 6.8 x 6.8 x 2.5
7440680220 22.0 0.9 0.7 350.00 8 x 8 x 1.2
7440690220 22.0 1.0 0.9 272.00 8 x 8 x 1.5
7440700220 22.0 1.3 1.0 166.00 8 x 8 x 2
74408941330 33.0 0.5 0.9 1,015.00 4.8 x 4.8 x 2.1
744773127 27.0 0.9 1.0 328.00 4 x 4.5 x 3.5
744773133 33.0 0.9 0.9 370.00 4 x 4.5 x 3.5
784773127 27.0 0.9 1.0 328.00 4 x 4.5 x 3.5
784773133 33.0 0.9 0.9 370.00 4 x 4.5 x 3.5
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