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: 0

no online Distributor with LT3973 stock available

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
0Results
Module
Fresh Search
Replacement Search with
0% tolerance (0)
10% tolerance (0)
25% tolerance (0)
50% tolerance (0)
add to Compare
Feedback
ajax-loader.gif
Loading. Please wait.