LT3973-5.0 Buck Converter overview

Description

Manufacturer
 
Category
Sub-Category

LT3973-5.0 is a 42.00 V sync Buck Converter from with 0.75 A output current. The maximum 42.00 V input voltage can be regulated down into a 5.00 V to 5.00 V output voltage.

It requires are a typical inductor size of 15.00 µH, a typical external component count of 6 and achieves a peak efficiency of 88 %. Further LT3973-5.0 characteristics are a adjustable 800 kHz switching frequency and 2 available package option(s): MSOP-10 DFN-10 .

For the LT3973-5.0 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. 4.20 V
V-IN max. 42.00 V
I-OUT? 0.75 A
V-OUT min. 5.00 V
V-OUT max. 5.00 V
V-OUT 5.000 V
V-OUT programmable no
sync/non-sync sync
Frequency typ. 800 kHz
Frequency adjustable
Frequency selectable
ext.clock sync. no
Frequency adj./ ext.clock min. 195 kHz
Frequency adj./ ext.clock max 2150 kHz
Softstart no
Softstart adjustable no
Tracking no
PG/Power OK yes
Quiescent current max. 6 µA
Operating min.
Operating max.
Junction min. -40 °C
Junction max. 125 °C
thermal shutdown typ.
Inductor size typ. 15.00 µH
Inductor suggested by Würth Elektronik
Automotive AEC-Q100 no
Light-Load-Mode yes
Topology Buck
Peak Efficiency 88 %
Component count min. 6
current limit adjustable no
Nr.of packages 2
CSP
SC70
SOT
MSOP MSOP-10
QFN/DFN DFN-10
SO/SOIC
SOP
DIP
TO
DDPAK

LT3973-5.0 Datasheet

Link to the most up-to-date LT3973-5.0 datasheet and the product page for EVM, tools and support information.

LT3973-5.0

LT3973-5.0 Sample stock and distributor price breaks

LT3973-5.0 prices and online available distributors.

OEMSecrets.com
findchips.com

Available Distributors with stock: 6

ARROW-NAC (8)

ProductStockPriceBuy
LT3973IMSE-3.3#PBF299
14.49 USD
1003.81 USD
Buy Now
LT3973EDD-5#PBF215
13.93 USD
1003.34 USD
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LT3973EDD-5#PBF128
13.93 USD
1003.34 USD
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LT3973EMSE#PBF288
14.07 USD
1003.46 USD
Buy Now
LT3973EDD#TRPBF10000
13.39 USD
Buy Now
LT3973EDD#PBF723
13.93 USD
1003.34 USD
Buy Now
LT3973IDD-5#PBF156
14.33 USD
1003.68 USD
Buy Now
LT3973IMSE-5#PBF469
14.49 USD
1003.81 USD
Buy Now

Chip-One-Stop (14)

ProductStockPriceBuy
LT3973EDD-3.3#PBF484
13.89 USD
103.23 USD
2003.12 USD
Buy Now
LT3973EDD-5#PBF112
15.29 USD
503.53 USD
1003.35 USD
Buy Now
LT3973EDD-5#PBF128
14.04 USD
103.44 USD
Buy Now
LT3973EDD#PBF728
16.38 USD
105.37 USD
255.31 USD
505.06 USD
1004.94 USD
2004.71 USD
Buy Now
LT3973EMSE-3.3#PBF550
14.07 USD
103.46 USD
2003.34 USD
5003.07 USD
Buy Now
LT3973EMSE-5#PBF970
16.72 USD
105.66 USD
255.59 USD
505.33 USD
1005.21 USD
2004.97 USD
Buy Now
LT3973EMSE#PBF834
16.72 USD
105.66 USD
255.59 USD
505.33 USD
1005.21 USD
2004.97 USD
Buy Now
LT3973EMSE#PBF834
16.72 USD
105.66 USD
255.59 USD
505.33 USD
1005.21 USD
2004.97 USD
Buy Now
LT3973EMSE#TRPBF2500
25003.76 USD
Buy Now
LT3973IDD-3.3#PBF970
16.61 USD
105.56 USD
255.50 USD
505.25 USD
1005.12 USD
2004.88 USD
Buy Now
LT3973IDD-5#PBF189
16.85 USD
105.76 USD
255.70 USD
505.44 USD
1005.31 USD
Buy Now
LT3973IMSE-3.3#PBF324
17.27 USD
56.21 USD
106.06 USD
505.72 USD
1005.39 USD
2005.27 USD
Buy Now
LT3973IMSE-5#PBF734
14.44 USD
254.26 USD
503.90 USD
1003.60 USD
2003.46 USD
5003.22 USD
Buy Now
LT3973IMSE#PBF5
17.27 USD
56.21 USD
Buy Now

DIGI-KEY (20)

ProductStockPriceBuy
LT3973EDD#PBF1844
15.88 USD
253.93 USD
1003.34 USD
Buy Now
LT3973EDD-5#PBF389
15.88 USD
253.93 USD
1003.34 USD
Buy Now
LT3973EMSE#PBF1285
16.08 USD
254.07 USD
1003.46 USD
Buy Now
LT3973EMSE-5#PBF916
16.08 USD
254.07 USD
1003.46 USD
Buy Now
LT3973EMSE-3.3#PBF713
16.08 USD
254.07 USD
1003.46 USD
Buy Now
LT3973IMSE-5#PBF445
16.68 USD
254.49 USD
1003.81 USD
Buy Now
DC2026C37
175.38 USD
Buy Now
LT3973EDD-3.3#PBF2366
15.88 USD
253.93 USD
1003.34 USD
Buy Now
LT3973IDD#PBF532
16.46 USD
254.33 USD
1003.68 USD
Buy Now
LT3973IDD-3.3#PBF519
16.46 USD
254.33 USD
1003.68 USD
Buy Now
LT3973IDD-5#PBF216
16.46 USD
254.33 USD
1003.68 USD
Buy Now
LT3973IMSE#PBF355
16.68 USD
254.49 USD
1003.81 USD
Buy Now
LT3973IMSE-3.3#PBF184
16.68 USD
254.49 USD
1003.81 USD
Buy Now
LT3973HDD-3.3#PBF216
17.21 USD
254.83 USD
1004.10 USD
Buy Now
LT3973HDD-5#PBF202
17.21 USD
254.83 USD
1004.10 USD
Buy Now
LT3973HMSE-3.3#PBF173
17.44 USD
254.99 USD
1004.24 USD
Buy Now
DC2026C-KIT4
1125.63 USD
Buy Now
DC1730A4
1100.50 USD
Buy Now
LT3973HMSE-5#PBF33
17.44 USD
254.99 USD
1004.24 USD
Buy Now
LT3973HMSE#PBF15
17.44 USD
254.99 USD
1004.24 USD
Buy Now
LT3973EDD#TRPBF0
25003.44 USD
Buy Now
LT3973EDD-5#TRPBF0
25003.44 USD
Buy Now
LT3973EDD-3.3#TRPBF0
25003.44 USD
Buy Now
LT3973EMSE#TRPBF0
25003.56 USD
Buy Now
LT3973EMSE-3.3#TRPBF0
25003.56 USD
Buy Now

Element14 (7)

ProductStockPriceBuy
LT3973EDD-3.3#PBF20
19.40 USD
256.28 USD
1005.34 USD
Buy Now
LT3973EDD-5#PBF36
19.40 USD
256.28 USD
1005.34 USD
Buy Now
LT3973EMSE-3.3#PBF230
19.72 USD
256.51 USD
1005.53 USD
Buy Now
LT3973EMSE-5#PBF216
19.72 USD
256.51 USD
1005.53 USD
Buy Now
LT3973EMSE#PBF391
19.72 USD
256.51 USD
1005.53 USD
Buy Now
LT3973IDD-3.3#PBF42
110.33 USD
256.92 USD
1005.88 USD
Buy Now
LT3973IDD-5#PBF234
110.33 USD
256.92 USD
1005.88 USD
Buy Now
LT3973IMSE-3.3#PBF0
110.68 USD
257.18 USD
1006.09 USD
Buy Now

FARNELL-ELEMENT14 (7)

ProductStockPriceBuy
LT3973EDD-3.3#PBF20Buy Now
LT3973EDD-5#PBF36Buy Now
LT3973EMSE-3.3#PBF310Buy Now
LT3973EMSE-5#PBF296Buy Now
LT3973EMSE#PBF747Buy Now
LT3973IDD-3.3#PBF42Buy Now
LT3973IDD-5#PBF234Buy Now

RS-COMPONENTS (1)

ProductStockPriceBuy
LT3973EMSE#PBF113Buy Now

Available Distributors without stock: 1

NEWARK (0)

ProductStockPriceBuy
LT3973EDD-3.3#PBF0
15.88 USD
253.95 USD
1003.34 USD
Buy Now
LT3973EDD#PBF0
15.88 USD
253.95 USD
1003.34 USD
Buy Now
LT3973EMSE#PBF0
16.09 USD
254.09 USD
1003.46 USD
Buy Now
LT3973EMSE#TRPBF0
15.91 USD
25004.24 USD
Buy Now
LT3973IDD-3.3#PBF0
16.48 USD
254.35 USD
1003.68 USD
Buy Now
LT3973IDD#PBF0
16.48 USD
254.35 USD
1003.68 USD
Buy Now
LT3973IMSE-5#PBF0
16.71 USD
254.50 USD
1003.81 USD
Buy Now
LT3973IMSE#TRPBF0
16.51 USD
25004.67 USD
Buy Now

Available Distributors with stock: 0

no online Distributor with LT3973 stock available

List of equivalents and alternatives

The following DC/DC Buck Converter are similar to LT3973-5.0. Optional, compare LT3973-5.0 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 LT3973-5.0.

V-IN max. 42 V, I-OUT 0.75 A, V-OUT min. 5 V, Frequency typ. 800 kHz
Order Code Spec L (µH) IR (A) ISAT (A) RDC (mΩ) L x W x H (mm)
74404042150 15.0 0.9 1.2 210.00 4 x 4 x 1.8
74404052220 22.0 1.2 1.4 225.00 5 x 5 x 2
74404054220 22.0 1.5 1.7 129.00 5 x 5 x 4
74404063220 22.0 1.4 1.6 140.00 6 x 6 x 2.8
744052150 15.0 1.0 1.1 175.00 5.8 x 5.8 x 2
744052180 18.0 0.9 1.0 185.00 5.8 x 5.8 x 2
744052220 22.0 0.8 0.9 240.00 5.8 x 5.8 x 2
744053150 15.0 1.4 1.2 80.00 5.8 x 5.8 x 3
744053180 18.0 1.3 1.1 90.00 5.8 x 5.8 x 3
744053220 22.0 1.2 0.9 100.00 5.8 x 5.8 x 3
744062150 15.0 1.3 1.1 80.00 6.8 x 6.8 x 2.5
744062180 18.0 1.3 1.0 90.00 6.8 x 6.8 x 2.5
744062220 22.0 1.2 1.0 100.00 6.8 x 6.8 x 2.5
7440690150 15.0 1.3 1.1 179.00 8 x 8 x 1.5
7440690180 18.0 1.1 1.1 225.00 8 x 8 x 1.5
7440690220 22.0 1.0 0.9 272.00 8 x 8 x 1.5
7440700150 15.0 1.7 1.3 117.00 8 x 8 x 2
7440700180 18.0 1.5 1.1 135.00 8 x 8 x 2
7440700220 22.0 1.3 1.0 166.00 8 x 8 x 2
74408941150 15.0 0.8 1.4 430.00 4.8 x 4.8 x 2.1
74408942150 15.0 1.1 1.6 207.00 4.8 x 4.8 x 3.1
74408942220 22.0 0.9 1.3 300.00 4.8 x 4.8 x 3.1
74408943150 15.0 1.4 1.7 118.00 4.8 x 4.8 x 4.1
74408943220 22.0 1.1 1.4 185.00 4.8 x 4.8 x 4.1
7447462220 22.0 1.8 1.7 102.00 5.5 x 5.5 x 8.5
744773115 15.0 1.2 1.5 204.00 4 x 4.5 x 3.5
744773118 18.0 1.1 1.3 225.00 4 x 4.5 x 3.5
744773122 22.0 1.0 1.2 261.00 4 x 4.5 x 3.5
744777122 22.0 1.4 1.7 90.00 7.3 x 7.3 x 4.5
7447779122 22.0 1.4 1.7 90.00 7.3 x 7.3 x 4.5
744778115 15.0 1.5 1.8 100.00 7.3 x 7.3 x 3.4
744778118 18.0 1.4 1.7 114.00 7.3 x 7.3 x 3.4
744778122 22.0 1.4 1.4 119.00 7.3 x 7.3 x 3.4
7447785115 15.0 1.6 1.4 165.00 5.9 x 6.2 x 3.3
7447785122 22.0 1.4 1.1 210.00 5.9 x 6.2 x 3.3
7447786122 22.0 2.0 1.3 98.00 5.9 x 6.2 x 5.1
7447789115 15.0 1.5 1.8 100.00 7.3 x 7.3 x 3.5
7447789118 18.0 1.4 1.7 114.00 7.3 x 7.3 x 3.5
7447789122 22.0 1.4 1.4 119.00 7.3 x 7.3 x 3.5
744787220 22.0 1.8 1.7 88.00 7.8 x 7 x 5
784773115 15.0 1.2 1.5 204.00 4 x 4.5 x 3.5
784773118 18.0 1.1 1.3 225.00 4 x 4.5 x 3.5
784773122 22.0 1.0 1.2 261.00 4 x 4.5 x 3.5
784774118 18.0 1.5 1.7 104.00 5.2 x 5.8 x 4.85
784774122 22.0 1.3 1.5 109.00 5.2 x 5.8 x 4.85
784777220 22.0 1.4 1.8 180.00 7.3 x 7.3 x 4.3
784778220 22.0 1.6 1.6 156.00 7.3 x 7.3 x 3.5
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