LT1765-3.3 Buck Converter overview

Description

Manufacturer
 
Category
Sub-Category

LT1765-3.3 is a 25.00 V non-sync Buck Converter from with 2.40 A output current. The maximum 25.00 V input voltage can be regulated down into a 3.30 V to 3.30 V output voltage.

It requires are a typical inductor size of 1.50 µH, a typical external component count of 7 and achieves a peak efficiency of 87 %. Further LT1765-3.3 characteristics are a fixed 1250 kHz switching frequency and 1 available package option(s): TSSOP-16 .

For the LT1765-3.3 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. 3.00 V
V-IN max. 25.00 V
I-OUT? 2.40 A
V-OUT min. 3.30 V
V-OUT max. 3.30 V
V-OUT 3.300 V
V-OUT programmable no
sync/non-sync non-sync
Frequency typ. 1250 kHz
Frequency fixed
Frequency selectable
ext.clock sync. yes
Frequency adj./ ext.clock min. 1600 kHz
Frequency adj./ ext.clock max 2000 kHz
Softstart no
Softstart adjustable no
Tracking no
PG/Power OK no
Quiescent current max. 1300 µA
Operating min.
Operating max.
Junction min. -40 °C
Junction max. 125 °C
thermal shutdown typ.
Inductor size typ. 1.50 µH
Inductor suggested by Würth Elektronik
Automotive AEC-Q100 no
Light-Load-Mode no
Topology Buck
Peak Efficiency 87 %
Component count min. 7
current limit adjustable no
Nr.of packages 1
CSP
SC70
SOT
MSOP
QFN/DFN
SO/SOIC
SOP TSSOP-16
DIP
TO
DDPAK

LT1765-3.3 Datasheet

Link to the most up-to-date LT1765-3.3 datasheet and the product page for EVM, tools and support information.

LT1765-3.3

LT1765-3.3 Sample stock and distributor price breaks

LT1765-3.3 prices and online available distributors.

OEMSecrets.com
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Available Distributors with stock: 9

Chip One Stop (12)

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Conrad UK (4)

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Digi-Key (8)

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Distrelec (1)

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Element14 (3)

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LT1765EFE-3.3#PBF41
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Farnell Element14 (4)

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Newark Electronics (2)

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Available Distributors with stock: 12

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Digi-Key

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Newark element14

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Mouser Electronics

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ComS.I.T.

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element14 Asia-Pacific

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Farnell element14

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List of equivalents and alternatives

The following DC/DC Buck Converter are similar to LT1765-3.3. Optional, compare LT1765-3.3 side-by-side with other Buck Converter via the Comparison function.

Variation Compare Product Manufacturer Package
0% MAX16936-3.3 MAX16936-3.3 product overviewMAX16936-3.3 product overview Maxim TQFN-32
0% LM2670-3.3 LM2670-3.3 product overviewLM2670-3.3 product overview Texas Instruments DDPAK-7, TO-220-7, VSON-14

Inductor suggestions

Below you can find matching inductors from Wuerth Elektronik calculated on the maximum parameters of LT1765-3.3.

V-IN max. 25 V, I-OUT 2.4 A, V-OUT min. 3.3 V, Frequency typ. 1250 kHz
Order Code Spec L (µH) IR (A) ISAT (A) RDC (mΩ) L x W x H (mm)
74404052022 2.2 3.0 3.6 31.60 5 x 5 x 2
74404052033 3.3 2.6 3.0 42.20 5 x 5 x 2
74404054022 2.2 3.8 5.3 19.00 5 x 5 x 4
74404054033 3.3 3.4 4.3 24.00 5 x 5 x 4
74404063022 2.2 3.8 5.6 20.00 6 x 6 x 2.8
74404063033 3.3 3.5 4.5 25.00 6 x 6 x 2.8
7440650022 2.2 6.2 5.9 11.00 10 x 10 x 3.1
7440650033 3.3 5.3 4.7 15.00 10 x 10 x 3.1
7440700022 2.2 4.6 3.2 17.00 8 x 8 x 2
74408942022 2.2 2.5 4.0 38.00 4.8 x 4.8 x 3.1
74408943022 2.2 3.0 4.6 26.00 4.8 x 4.8 x 4.1
74408943033 3.3 2.6 3.6 31.00 4.8 x 4.8 x 4.1
744316330 3.3 5.8 5.8 18.50 5.5 x 5.3 x 4.3
74437324033 3.3 2.5 4.2 69.00 4.45 x 4.06 x 2
74438336022 2.2 2.4 4.3 67.00 3 x 3 x 2
74438356033 3.3 3.6 5.5 39.90 4.1 x 4.1 x 2.1
7447462022 2.2 6.3 4.3 10.00 5.5 x 5.5 x 8.5
7447462033 3.3 4.7 4.0 16.00 5.5 x 5.5 x 8.5
744773022 2.2 2.5 3.4 34.00 4 x 4.5 x 3.5
744777003 3.3 3.5 4.6 25.00 7.3 x 7.3 x 4.5
7447779002 2.2 4.2 6.0 16.00 7.3 x 7.3 x 4.5
7447779003 3.3 3.3 4.5 26.00 7.3 x 7.3 x 4.5
744778002 2.2 4.0 4.8 14.00 7.3 x 7.3 x 3.4
744778003 3.3 3.1 4.1 24.00 7.3 x 7.3 x 3.4
7447785002 2.2 2.9 3.3 43.00 5.9 x 6.2 x 3.3
7447785003 3.3 2.8 3.0 43.00 5.9 x 6.2 x 3.3
7447786002 2.2 3.5 4.0 40.00 5.9 x 6.2 x 5.1
7447789002 2.2 4.0 4.8 19.00 7.3 x 7.3 x 3.5
7447789003 3.3 3.4 4.2 24.00 7.3 x 7.3 x 3.5
744787027 2.7 4.4 4.5 13.50 7.8 x 7 x 5
784773022 2.2 2.5 3.4 34.00 4 x 4.5 x 3.5
784775022 2.2 6.0 6.0 8.00 7 x 7.8 x 5.5
784775033 3.3 4.9 4.9 12.00 7 x 7.8 x 5.5
784777022 2.2 2.7 5.3 51.00 7.3 x 7.3 x 4.3
784777033 3.3 2.5 4.7 58.00 7.3 x 7.3 x 4.3
784778022 2.2 3.1 5.0 42.00 7.3 x 7.3 x 3.5
784778033 3.3 2.7 3.7 54.00 7.3 x 7.3 x 3.5
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