LT3990 Buck Converter overview

Description

Manufacturer
 
Category
Sub-Category

LT3990 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 1.21 V to 60.00 V output voltage.

It requires are a typical inductor size of 33.00 µH, a typical external component count of 7 and achieves a peak efficiency of 83 %. Further LT3990 characteristics are a adjustable 840 kHz switching frequency and 2 available package option(s): MSOP-16 DFN-10 .

For the LT3990 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. 1.21 V
V-OUT max. 60.00 V
V-OUT adjustable 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. 7
current limit adjustable no
Nr.of packages 2
CSP
SC70
SOT
MSOP MSOP-16
QFN/DFN DFN-10
SO/SOIC
SOP
DIP
TO
DDPAK

LT3990 Datasheet

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

LT3990

LT3990 Sample stock and distributor price breaks

LT3990 prices and online available distributors.

OEMSecrets.com
findchips.com

Available Distributors with stock: 7

Chip One Stop (14)

ProductStockPriceBuy
LT3990EDD#PBF289
15.58 USD
104.05 USD
503.59 USD
1003.10 USD
2423.07 USD
Buy Now
LT3990EDD#PBF1351
15.53 USD
1004.07 USD
Buy Now
LT3990EDD#TRPBF7500
25003.58 USD
Buy Now
LT3990EMSE#PBF1812
15.63 USD
1004.15 USD
Buy Now
LT3990HMSE-3.3#PBF7
16.04 USD
Buy Now
LT3990HMSE-5#PBF37
17.14 USD
104.59 USD
374.28 USD
Buy Now
LT3990HMSE-5#PBF643
7775.02 USD
Buy Now
LT3990HMSE-5#PBF643
7775.02 USD
Buy Now
LT3990HMSE#PBF37
16.90 USD
104.48 USD
374.34 USD
Buy Now
LT3990HMSE#PBF431
16.04 USD
1005.02 USD
Buy Now
LT3990IDD#PBF313
16.13 USD
1004.52 USD
Buy Now
LT3990IMSE-3.3#PBF4
16.27 USD
Buy Now
LT3990IMSE-5#PBF21
16.56 USD
104.21 USD
Buy Now
LT3990IMSE#PBF546
16.27 USD
1004.62 USD
Buy Now

Digi-Key (14)

ProductStockPriceBuy
LT3990EDD#PBF2350
15.56 USD
253.71 USD
1003.16 USD
Buy Now
LT3990EMSE-5#PBF398
15.66 USD
253.78 USD
1003.22 USD
Buy Now
LT3990EMSE-3.3#PBF378
15.66 USD
253.78 USD
1003.22 USD
Buy Now
LT3990IDD#PBF2858
16.18 USD
254.12 USD
1003.51 USD
Buy Now
LT3990IMSE#PBF625
16.30 USD
254.21 USD
1003.58 USD
Buy Now
LT3990IMSE-5#PBF470
16.30 USD
254.21 USD
1003.58 USD
Buy Now
LT3990IMSE-3.3#PBF467
16.30 USD
254.21 USD
1003.58 USD
Buy Now
LT3990HMSE#PBF795
16.84 USD
254.58 USD
1003.89 USD
Buy Now
LT3990HMSE-3.3#PBF483
16.84 USD
254.58 USD
1003.89 USD
Buy Now
LT3990HMSE-5#PBF178
16.84 USD
254.58 USD
1003.89 USD
Buy Now
LT3990EMSE#TRPBF0
25003.33 USD
Buy Now
LT3990EMSE#TRPBF2169
16.49 USD
255.79 USD
1003.99 USD
2503.66 USD
Buy Now
LT3990EMSE#TRPBF2169
16.49 USD
255.79 USD
1003.99 USD
2503.66 USD
Buy Now
LT3990IDD#TRPBF0
25003.61 USD
Buy Now
LT3990IDD#TRPBF2170
17.06 USD
256.30 USD
1004.33 USD
2503.97 USD
Buy Now
LT3990IDD#TRPBF2170
17.06 USD
256.30 USD
1004.33 USD
2503.97 USD
Buy Now
LT3990EMSE#PBF0
15.66 USD
253.78 USD
1003.22 USD
Buy Now
LT3990EDD#TRPBF0
25003.26 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
LT3990HMSE#TRPBF0
25003.99 USD
Buy Now
LT3990HMSE-3.3#TRPBF0
25003.99 USD
Buy Now

Distrelec (1)

ProductStockPriceBuy
LT3990EDD#PBF112Buy Now

Element14 (4)

ProductStockPriceBuy
LT3990EMSE-3.3#PBF85
18.90 USD
255.95 USD
1005.07 USD
Buy Now
LT3990EMSE-5#PBF0
18.90 USD
255.95 USD
1005.07 USD
Buy Now
LT3990EMSE#PBF296
18.90 USD
255.95 USD
1005.07 USD
Buy Now
LT3990HMSE-3.3#PBF0
110.75 USD
257.20 USD
1006.11 USD
Buy Now
LT3990HMSE-5#PBF7
110.75 USD
257.20 USD
1006.11 USD
Buy Now
LT3990HMSE#PBF144
110.75 USD
257.20 USD
1006.11 USD
Buy Now
LT3990IDD#PBF0
19.72 USD
256.48 USD
1005.52 USD
Buy Now
LT3990IMSE-5#PBF0
19.90 USD
256.62 USD
1005.63 USD
Buy Now

Farnell Element14 (4)

ProductStockPriceBuy
LT3990EMSE-3.3#PBF54Buy Now
LT3990EMSE-5#PBF0Buy Now
LT3990EMSE#PBF336Buy Now
LT3990HMSE-3.3#PBF0Buy Now
LT3990HMSE-5#PBF11Buy Now
LT3990HMSE#PBF154Buy 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
LT3990EMSE#PBF0
15.57 USD
253.73 USD
1003.16 USD
Buy Now
LT3990EMSE#TRPBF0
15.38 USD
25003.86 USD
Buy Now
LT3990IDD#PBF0
16.06 USD
254.06 USD
1003.44 USD
Buy Now
LT3990IDD#TRPBF0
15.86 USD
25004.21 USD
Buy Now
LT3990IMSE#PBF0
16.18 USD
254.15 USD
1003.51 USD
Buy Now

RS Components (5)

ProductStockPriceBuy
LT3990EDD#PBF33Buy Now
LT3990EDD#PBF202Buy Now
LT3990EMSE#PBF160Buy Now
LT3990IDD#PBF16Buy Now
LT3990IMSE#PBF50Buy Now

Available Distributors with stock: 8

Arrow Electronics

ProductStockPriceBuy
LT3990EDD#PBF 1258
13.64 $
1003.10 $
Buy Now
LT3990EMSE#PBF 1082
13.71 $
1003.16 $
Buy Now
LT3990HMSE#PBF 858
14.49 $
1003.81 $
Buy Now
LT3990IMSE#PBF 546
14.13 $
1003.51 $
Buy Now
LT3990HMSE-3.3#PBF 25
14.49 $
1003.81 $
Buy Now
LT3990HMSE-3.3#PBF 7
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
LT3990EMSE#PBF 0
13.71 $
1003.16 $
Buy Now
LT3990IMSE#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
LT3990IMSE#TRPBF 0
1003.61 $
Buy Now
LT3990EMSE-5#PBF 0
13.71 $
1003.16 $
Buy Now
LT3990HMSE-3.3#TRPBF 0
1003.91 $
Buy Now
show stock=0hide stock=0

Digi-Key

ProductStockPriceBuy
LT3990IDD#PBF 2858
1002.94 €
253.45 €
15.17 €
Buy Now
LT3990EDD#PBF 2350
1002.65 €
253.11 €
14.65 €
Buy Now
LT3990IDD#TRPBF 2170
2503.32 €
1003.63 €
255.28 €
15.91 €
Buy Now
LT3990EMSE#TRPBF 2169
2503.06 €
1003.34 €
254.85 €
15.43 €
Buy Now
LT3990EMSE#TRPBF 2169
2503.06 €
1003.34 €
254.85 €
15.43 €
Buy Now
LT3990HMSE#PBF 795
1003.25 €
253.83 €
15.72 €
Buy Now
LT3990IMSE#PBF 625
1003.00 €
253.53 €
15.27 €
Buy Now
LT3990HMSE-3.3#PBF 483
1003.25 €
253.83 €
15.72 €
Buy Now
LT3990IMSE-5#PBF 470
1003.00 €
253.53 €
15.27 €
Buy Now
LT3990IMSE-3.3#PBF 467
1003.00 €
253.53 €
15.27 €
Buy Now
LT3990EMSE-5#PBF 398
1002.70 €
253.17 €
14.74 €
Buy Now
LT3990EMSE-3.3#PBF 378
1002.70 €
253.17 €
14.74 €
Buy Now
LT3990HMSE-5#PBF 178
1003.25 €
253.83 €
15.72 €
Buy Now
LT3990EMSE#TRPBF 0
25002.78 €
Buy Now
LT3990IDD#TRPBF 0
25003.02 €
Buy Now
show stock=0hide stock=0

Newark element14

ProductStockPriceBuy
LT3990IMSE-5#PBF 0
13.29 $
253.29 $
1003.29 $
Buy Now
LT3990HMSE-3.3#PBF 0
16.71 $
254.50 $
1003.81 $
Buy Now
LT3990EMSE-3.3#PBF 0
15.57 $
253.73 $
1003.16 $
Buy Now
LT3990IDD#PBF 0
16.06 $
254.06 $
1003.44 $
Buy Now
LT3990HMSE-5#PBF 0
16.71 $
254.50 $
1003.81 $
Buy Now
LT3990IMSE#PBF 0
16.18 $
254.15 $
1003.51 $
Buy Now
LT3990EMSE#PBF 0
15.57 $
253.73 $
1003.16 $
Buy Now
LT3990IDD#TRPBF 0
15.86 $
25004.21 $
Buy Now
LT3990IMSE-3.3#PBF 0
16.18 $
254.15 $
1003.51 $
Buy Now
LT3990EMSE-5#PBF 0
15.57 $
253.73 $
1003.16 $
Buy Now
LT3990EMSE#TRPBF 0
15.38 $
25003.86 $
Buy Now
LT3990EDD#PBF 2
15.46 $
253.66 $
1003.10 $
Buy Now
LT3990HMSE#PBF 0
16.71 $
254.50 $
1003.81 $
Buy Now
show stock=0hide stock=0

Mouser Electronics

ProductStockPriceBuy
LT3990EDD#PBF 560
15.58 $
105.11 $
253.72 $
1003.17 $
Buy Now
LT3990EMSE#PBF 715
15.68 $
105.20 $
253.79 $
1003.23 $
Buy Now
LT3990HMSE#PBF 222
16.86 $
106.29 $
254.58 $
1003.89 $
Buy Now
LT3990IMSE#PBF 259
16.32 $
105.79 $
254.22 $
1003.59 $
Buy Now
LT3990IMSE-5#PBF 290
16.32 $
105.79 $
254.22 $
1003.59 $
Buy Now
LT3990IDD#PBF 317
16.19 $
105.68 $
254.13 $
1003.51 $
Buy Now
LT3990EMSE-3.3#PBF 146
15.68 $
105.20 $
253.79 $
1003.23 $
Buy Now
LT3990HMSE-5#PBF 64
16.86 $
106.29 $
254.58 $
1003.89 $
Buy Now
LT3990EDD#TRPBF 0
16.38 $
105.92 $
255.69 $
1003.92 $
2503.60 $
Buy Now
LT3990IDD#TRPBF 0
17.07 $
106.56 $
256.31 $
1004.34 $
2503.98 $
Buy Now
LT3990EMSE#TRPBF 0
16.50 $
106.03 $
255.80 $
1004.00 $
2503.66 $
Buy Now
LT3990EMSE-5#PBF 0
15.68 $
105.20 $
253.79 $
1003.23 $
Buy Now
LT3990IMSE-3.3#TRPBF 0
17.22 $
106.70 $
256.44 $
1004.42 $
2504.06 $
Buy Now
LT3990HMSE-5#TRPBF 0
17.82 $
107.26 $
256.98 $
1004.79 $
2504.39 $
Buy Now
LT3990IMSE-3.3#PBF 0
16.32 $
105.79 $
254.22 $
1003.59 $
Buy Now
show stock=0hide stock=0

element14 Asia-Pacific

ProductStockPriceBuy
LT3990IMSE-5#PBF 0
17.92 $
255.30 $
1004.50 $
Buy Now
LT3990HMSE-3.3#PBF 0
18.60 $
255.76 $
1004.88 $
Buy Now
LT3990EMSE-3.3#PBF 85
17.12 $
254.76 $
1004.05 $
Buy Now
LT3990IDD#PBF 0
17.78 $
255.18 $
1004.41 $
Buy Now
LT3990HMSE-5#PBF 7
18.60 $
255.76 $
1004.88 $
Buy Now
LT3990EMSE#PBF 296
17.12 $
254.76 $
1004.05 $
Buy Now
LT3990EMSE-5#PBF 0
17.12 $
254.76 $
1004.05 $
Buy Now
LT3990HMSE#PBF 144
18.60 $
255.76 $
1004.88 $
Buy Now
show stock=0hide stock=0

Farnell element14

ProductStockPriceBuy
LT3990HMSE-3.3#PBF 0
15.62 GBP
253.42 GBP
1003.11 GBP
Buy Now
LT3990EMSE-3.3#PBF 107
14.68 GBP
252.82 GBP
1002.58 GBP
Buy Now
LT3990HMSE-5#PBF 11
15.62 GBP
253.42 GBP
1003.11 GBP
Buy Now
LT3990EMSE#PBF 296
14.68 GBP
252.82 GBP
1002.58 GBP
Buy Now
LT3990HMSE#PBF 154
15.62 GBP
253.25 GBP
1002.95 GBP
Buy Now
show stock=0hide stock=0

Chip1Stop

ProductStockPriceBuy
LT3990IMSE-5#PBF 21
16.56 $
104.21 $
Buy Now
LT3990HMSE-3.3#PBF 7
16.04 $
Buy Now
LT3990IDD#PBF 313
16.13 $
1004.52 $
Buy Now
LT3990HMSE-5#PBF 37
17.14 $
104.59 $
374.28 $
Buy Now
LT3990HMSE-5#PBF 643
7775.02 $
Buy Now
LT3990IMSE#PBF 546
16.27 $
1004.62 $
Buy Now
LT3990EMSE#PBF 1812
15.63 $
1004.15 $
Buy Now
LT3990IMSE-3.3#PBF 4
16.27 $
Buy Now
LT3990EDD#TRPBF 7500
25003.58 $
Buy Now
LT3990EDD#PBF 289
15.58 $
503.59 $
2423.07 $
Buy Now
LT3990HMSE#PBF 431
16.04 $
1005.02 $
Buy Now
LT3990HMSE#PBF 37
16.90 $
104.48 $
374.34 $
Buy Now

RS Components

ProductStockPriceBuy
LT3990IDD#PBF 16
103.63 GBP
253.59 GBP
503.54 GBP
753.50 GBP
Buy Now
LT3990IMSE#PBF 50
105.56 GBP
255.46 GBP
505.40 GBP
755.34 GBP
Buy Now
LT3990EMSE#PBF 160
104.80 GBP
254.44 GBP
504.38 GBP
754.32 GBP
Buy Now
LT3990EDD#PBF 202
65.20 GBP
304.68 GBP
614.16 GBP
Buy Now
LT3990EDD#PBF 33
15.72 GBP
65.20 GBP
304.68 GBP
614.16 GBP
Buy Now

List of equivalents and alternatives

The following DC/DC Buck Converter are similar to LT3990. Optional, compare LT3990 side-by-side with other Buck Converter via the Comparison function.

Variation Compare Product Manufacturer Package
0% LM46000 LM46000 product overviewLM46000 product overview Texas Instruments HTSSOP-16
0% LM46000-Q1 LM46000-Q1 product overviewLM46000-Q1 product overview Texas Instruments HTSSOP-16

Inductor suggestions

Below you can find matching inductors from Wuerth Elektronik calculated on the maximum parameters of LT3990.

V-IN max. 62 V, I-OUT 0.35 A, V-OUT min. 1.21 V, Frequency typ. 840 kHz
Order Code Spec L (µH) IR (A) ISAT (A) RDC (mΩ) L x W x H (mm)
744025150 15.0 0.7 0.9 356.00 2.8 x 2.8 x 3
744029100 10.0 0.7 0.5 390.00 2.8 x 2.8 x 1.5
744031100 10.0 0.7 0.6 185.00 3.8 x 3.8 x 1.8
744031150 15.0 0.6 0.5 255.00 3.8 x 3.8 x 1.8
74404024100 10.0 0.5 0.9 435.00 2.5 x 2 x 1.2
74404024150 15.0 0.5 0.8 830.00 2.5 x 2 x 1.2
74404032100 10.0 0.8 0.9 230.00 3 x 3 x 1.5
74404032150 15.0 0.7 0.8 300.00 3 x 3 x 1.5
744042150 15.0 1.0 0.8 190.00 4.8 x 4.8 x 2
744043150 15.0 1.0 0.8 120.00 4.8 x 4.8 x 3
7440680150 15.0 1.1 0.8 213.00 8 x 8 x 1.2
74479889310 10.0 0.8 0.5 500.00 2.5 x 2 x 1.2
0Results
Module
Fresh Search
Replacement Search with
0% tolerance (0)
10% tolerance (0)
25% tolerance (0)
50% tolerance (0)
add to Compare
Last Tweets
Meet us at this weeks PCIM tradeshow in Nuremberg, Tue+Wed, Details under info@dcdcselector.com
With the help of #OEMsecrets we show for all Selectors and products worldwide distributor inventory and prices. https://t.co/udaDPmshky
Update for the DC/DC Buck-Boost Converter Selector with additional products, fresh equivalent suggestions and more: https://t.co/C8PXhcizYQ
Feedback
ajax-loader.gif
Loading. Please wait.