LT3970-3.42 Buck Converter overview

Description

Manufacturer
 
Category
Sub-Category

LT3970-3.42 is a 40.00 V sync Buck Converter from with 0.35 A output current. The maximum 40.00 V input voltage can be regulated down into a 3.42 V to 3.42 V output voltage.

It requires are a typical inductor size of 22.00 µH, a typical external component count of 6 and achieves a peak efficiency of 85 %. Further LT3970-3.42 characteristics are a adjustable 2200 kHz switching frequency and 2 available package option(s): MSOP-10 DFN-10 .

For the LT3970-3.42 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. 40.00 V
I-OUT? 0.35 A
V-OUT min. 3.42 V
V-OUT max. 3.42 V
V-OUT 3.420 V
V-OUT programmable no
sync/non-sync sync
Frequency typ. 2200 kHz
Frequency adjustable
Frequency selectable
ext.clock sync. no
Frequency adj./ ext.clock min. 200 kHz
Frequency adj./ ext.clock max 2250 kHz
Softstart no
Softstart adjustable no
Tracking no
PG/Power OK yes
Quiescent current max. 3.5 µA
Operating min.
Operating max.
Junction min. -40 °C
Junction max. 125 °C
thermal shutdown typ.
Inductor size typ. 22.00 µH
Inductor suggested by Würth Elektronik
Automotive AEC-Q100 no
Light-Load-Mode yes
Topology Buck
Peak Efficiency 85 %
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

LT3970-3.42 Datasheet

Link to the most up-to-date LT3970-3.42 datasheet and the product page for EVM, tools and support information.

LT3970-3.42

LT3970-3.42 Sample stock and distributor price breaks

LT3970-3.42 prices and online available distributors.

OEMSecrets.com
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Available Distributors with stock: 8

Chip One Stop (18)

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List of equivalents and alternatives

The following DC/DC Buck Converter are similar to LT3970-3.42. Optional, compare LT3970-3.42 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 LT3970-3.42.

V-IN max. 40 V, I-OUT 0.35 A, V-OUT min. 3.42 V, Frequency typ. 2200 kHz
Order Code Spec L (µH) IR (A) ISAT (A) RDC (mΩ) L x W x H (mm)
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
744032008 8.2 0.4 1.0 360.00 3.2 x 2.5 x 2.3
74404024100 10.0 0.5 0.9 435.00 2.5 x 2 x 1.2
74404032100 10.0 0.8 0.9 230.00 3 x 3 x 1.5
74404041100 10.0 1.3 1.0 168.00 4 x 4 x 1.2
744042100 10.0 1.3 1.0 120.00 4.8 x 4.8 x 2
744042120 12.0 1.2 1.0 150.00 4.8 x 4.8 x 2
744043100 10.0 1.2 1.0 95.00 4.8 x 4.8 x 3
744043120 12.0 1.1 1.0 100.00 4.8 x 4.8 x 3
7440680100 10.0 1.2 1.0 177.00 8 x 8 x 1.2
7440680120 12.0 1.2 1.0 195.00 8 x 8 x 1.2
74479889310 10.0 0.8 0.5 500.00 2.5 x 2 x 1.2
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