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

ARROW-NAC (8)

ProductStockPriceBuy
LT3990HMSE-5#PBF27
14.49 USD
1003.81 USD
Buy Now
LT3990IMSE-3.3#PBF684
14.13 USD
1003.51 USD
Buy Now
LT3990IMSE#PBF837
14.13 USD
1003.51 USD
Buy Now
LT3990IDD#PBF472
14.04 USD
1003.44 USD
Buy Now
LT3990HMSE#PBF22
14.49 USD
1003.81 USD
Buy Now
LT3990IMSE-5#PBF157
14.13 USD
1003.51 USD
Buy Now
LT3990EMSE#PBF787
13.71 USD
1003.16 USD
Buy Now
LT3990EMSE-3.3#PBF854
13.71 USD
1003.16 USD
Buy Now

Chip-One-Stop (13)

ProductStockPriceBuy
LT3990EDD#PBF146
14.26 USD
103.27 USD
Buy Now
LT3990EDD#PBF115
15.76 USD
104.84 USD
254.79 USD
504.57 USD
1004.46 USD
Buy Now
LT3990EDD#TRPBF7500
25003.59 USD
Buy Now
LT3990HMSE-5#PBF37
15.73 USD
104.04 USD
374.01 USD
Buy Now
LT3990HMSE-5#PBF767
16.85 USD
105.77 USD
255.70 USD
505.44 USD
1005.31 USD
2005.06 USD
Buy Now
LT3990HMSE-5#PBF767
16.85 USD
105.77 USD
255.70 USD
505.44 USD
1005.31 USD
2005.06 USD
Buy Now
LT3990HMSE#PBF37
15.73 USD
104.04 USD
374.01 USD
Buy Now
LT3990HMSE#PBF548
17.08 USD
56.05 USD
105.91 USD
505.57 USD
1005.25 USD
2005.13 USD
Buy Now
LT3990IDD#PBF3
16.56 USD
Buy Now
LT3990IMSE-3.3#PBF758
18.27 USD
106.53 USD
256.23 USD
505.70 USD
1005.27 USD
2005.06 USD
Buy Now
LT3990IMSE-5#PBF21
15.27 USD
103.71 USD
Buy Now
LT3990IMSE-5#PBF400
15.52 USD
105.02 USD
503.86 USD
1003.76 USD
2003.69 USD
Buy Now
LT3990IMSE#PBF813
16.70 USD
105.64 USD
255.58 USD
505.32 USD
1005.19 USD
2004.95 USD
Buy Now

DIGI-KEY (10)

ProductStockPriceBuy
LT3990EDD#PBF1739
15.45 USD
253.64 USD
1003.10 USD
Buy Now
LT3990EMSE#PBF5171
15.55 USD
253.71 USD
1003.16 USD
Buy Now
LT3990EMSE-3.3#PBF1140
15.55 USD
253.71 USD
1003.16 USD
Buy Now
LT3990EMSE-5#PBF751
15.55 USD
253.71 USD
1003.16 USD
Buy Now
LT3990IDD#PBF2764
16.06 USD
254.04 USD
1003.44 USD
Buy Now
LT3990IMSE-3.3#PBF596
16.18 USD
254.13 USD
1003.51 USD
Buy Now
LT3990IMSE-5#PBF282
16.18 USD
254.13 USD
1003.51 USD
Buy Now
LT3990HMSE-5#PBF1173
16.71 USD
254.49 USD
1003.81 USD
Buy Now
LT3990HMSE-3.3#PBF687
16.71 USD
254.49 USD
1003.81 USD
Buy Now
LT3990IDD#TRPBF2500
25003.54 USD
Buy Now
LT3990IMSE#PBF0
16.18 USD
254.13 USD
1003.51 USD
Buy Now
LT3990HMSE#PBF0
16.71 USD
254.49 USD
1003.81 USD
Buy Now
LT3990EDD#TRPBF0
25003.20 USD
Buy Now
LT3990EMSE#TRPBF0
25003.26 USD
Buy Now
LT3990EMSE-3.3#TRPBF0
25003.26 USD
Buy Now
LT3990EMSE-5#TRPBF0
25003.26 USD
Buy Now
LT3990IMSE#TRPBF0
25003.61 USD
Buy Now
LT3990IMSE-3.3#TRPBF0
25003.61 USD
Buy Now
LT3990IMSE-5#TRPBF0
25003.61 USD
Buy Now
LT3990HMSE#TRPBF0
25003.91 USD
Buy Now
LT3990HMSE-3.3#TRPBF0
25003.91 USD
Buy Now
LT3990HMSE-5#TRPBF0
25003.91 USD
Buy Now

Element14 (8)

ProductStockPriceBuy
LT3990EMSE-3.3#PBF252
18.81 USD
255.89 USD
1005.02 USD
Buy Now
LT3990EMSE-5#PBF358
18.81 USD
255.89 USD
1005.02 USD
Buy Now
LT3990EMSE#PBF646
18.81 USD
255.89 USD
1005.02 USD
Buy Now
LT3990HMSE-3.3#PBF57
110.64 USD
257.13 USD
1006.05 USD
Buy Now
LT3990HMSE-5#PBF62
110.64 USD
257.13 USD
1006.05 USD
Buy Now
LT3990HMSE#PBF11
110.64 USD
257.13 USD
1006.05 USD
Buy Now
LT3990IDD#PBF234
19.61 USD
256.41 USD
1005.46 USD
Buy Now
LT3990IMSE-5#PBF147
19.81 USD
256.56 USD
1005.57 USD
Buy Now

FARNELL-ELEMENT14 (48)

ProductStockPriceBuy
LT3990EMSE-3.3#PBF262Buy Now
LT3990EMSE-3.3#PBF262Buy Now
LT3990EMSE-3.3#PBF262Buy Now
LT3990EMSE-3.3#PBF262Buy Now
LT3990EMSE-3.3#PBF262Buy Now
LT3990EMSE-3.3#PBF262Buy Now
LT3990EMSE-5#PBF408Buy Now
LT3990EMSE-5#PBF408Buy Now
LT3990EMSE-5#PBF408Buy Now
LT3990EMSE-5#PBF408Buy Now
LT3990EMSE-5#PBF408Buy Now
LT3990EMSE-5#PBF408Buy Now
LT3990EMSE#PBF888Buy Now
LT3990EMSE#PBF888Buy Now
LT3990EMSE#PBF888Buy Now
LT3990EMSE#PBF788Buy Now
LT3990EMSE#PBF788Buy Now
LT3990EMSE#PBF788Buy Now
LT3990HMSE-3.3#PBF82Buy Now
LT3990HMSE-3.3#PBF82Buy Now
LT3990HMSE-3.3#PBF82Buy Now
LT3990HMSE-3.3#PBF82Buy Now
LT3990HMSE-3.3#PBF57Buy Now
LT3990HMSE-3.3#PBF57Buy Now
LT3990HMSE-5#PBF78Buy Now
LT3990HMSE-5#PBF68Buy Now
LT3990HMSE-5#PBF68Buy Now
LT3990HMSE-5#PBF68Buy Now
LT3990HMSE-5#PBF68Buy Now
LT3990HMSE-5#PBF68Buy Now
LT3990HMSE#PBF61Buy Now
LT3990HMSE#PBF11Buy Now
LT3990HMSE#PBF11Buy Now
LT3990HMSE#PBF11Buy Now
LT3990HMSE#PBF11Buy Now
LT3990HMSE#PBF11Buy Now
LT3990IDD#PBF263Buy Now
LT3990IDD#PBF263Buy Now
LT3990IDD#PBF263Buy Now
LT3990IDD#PBF263Buy Now
LT3990IDD#PBF263Buy Now
LT3990IDD#PBF263Buy Now
LT3990IMSE-5#PBF162Buy Now
LT3990IMSE-5#PBF162Buy Now
LT3990IMSE-5#PBF162Buy Now
LT3990IMSE-5#PBF162Buy Now
LT3990IMSE-5#PBF162Buy Now
LT3990IMSE-5#PBF162Buy Now

NEWARK (2)

ProductStockPriceBuy
LT3990EDD#PBF2
15.46 USD
253.66 USD
1003.10 USD
Buy Now
LT3990EMSE-3.3#PBF0
15.57 USD
253.73 USD
1003.16 USD
Buy Now
LT3990EMSE-5#PBF0
15.57 USD
253.73 USD
1003.16 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
LT3990HMSE-3.3#PBF0
16.71 USD
254.50 USD
1003.81 USD
Buy Now
LT3990HMSE-5#PBF0
16.71 USD
254.50 USD
1003.81 USD
Buy Now
LT3990HMSE#PBF0
16.71 USD
254.50 USD
1003.81 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-3.3#PBF0
16.18 USD
254.15 USD
1003.51 USD
Buy Now
LT3990IMSE-5#PBF62
13.51 USD
253.51 USD
1003.51 USD
Buy Now
LT3990IMSE#PBF0
16.18 USD
254.15 USD
1003.51 USD
Buy Now

RS-COMPONENTS (6)

ProductStockPriceBuy
LT3990EDD#PBF5Buy Now
LT3990EDD#PBF205Buy Now
LT3990EDD#PBF121Buy Now
LT3990EMSE#PBF3Buy Now
LT3990IDD#PBF100Buy Now
LT3990IMSE#PBF54Buy Now

Available Distributors with stock: 0

no online Distributor with LT3990 stock available

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
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