LT1776 Buck Converter overview

Description

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LT1776 is a 40.00 V non-sync Buck Converter from with 0.55 A output current. The maximum 40.00 V input voltage can be regulated down into a 1.24 V to 38.00 V output voltage.

It requires are a typical inductor size of 100.00 µH, a typical external component count of 9 and achieves a peak efficiency of 82 %. Further LT1776 characteristics are a fixed 200 kHz switching frequency and 2 available package option(s): SO-8 PDIP .

For the LT1776 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. 7.40 V
V-IN max. 40.00 V
I-OUT? 0.55 A
V-OUT min. 1.24 V
V-OUT max. 38.00 V
V-OUT adjustable V
V-OUT programmable no
sync/non-sync non-sync
Frequency typ. 200 kHz
Frequency fixed
Frequency selectable
ext.clock sync. yes
Frequency adj./ ext.clock min. 250 kHz
Frequency adj./ ext.clock max 400 kHz
Softstart no
Softstart adjustable no
Tracking no
PG/Power OK no
Quiescent current max. 900 µA
Operating min.
Operating max.
Junction min. -40 °C
Junction max. 125 °C
thermal shutdown typ.
Inductor size typ. 100.00 µH
Inductor suggested by Würth Elektronik
Automotive AEC-Q100 no
Light-Load-Mode no
Topology Buck
Peak Efficiency 82 %
Component count min. 9
current limit adjustable no
Nr.of packages 2
CSP
SC70
SOT
MSOP
QFN/DFN
SO/SOIC SO-8
SOP
DIP PDIP
TO
DDPAK

LT1776 Datasheet

Link to the most up-to-date LT1776 datasheet and the product page for EVM, tools and support information.

LT1776

LT1776 Sample stock and distributor price breaks

LT1776 prices and online available distributors.

OEMSecrets.com
findchips.com

Available Distributors with stock: 0

no online Distributor with LT1776 stock available

Available Distributors with stock: 0

no online Distributor with LT1776 stock available

List of equivalents and alternatives

The following DC/DC Buck Converter are similar to LT1776. Optional, compare LT1776 side-by-side with other Buck Converter via the Comparison function.

Variation Compare Product Manufacturer Package
0% MAX15014 MAX15014 product overviewMAX15014 product overview Maxim TQFN-36
0% MAX15015 MAX15015 product overviewMAX15015 product overview Maxim TQFN-36
0% MAX15016 MAX15016 product overviewMAX15016 product overview Maxim TQFN-36
0% MAX15017 MAX15017 product overviewMAX15017 product overview Maxim TQFN-36
0% MAX5080 MAX5080 product overviewMAX5080 product overview Maxim TQFN-32
0% MAX5081 MAX5081 product overviewMAX5081 product overview Maxim TQFN-16
0% MAX5096 MAX5096 product overviewMAX5096 product overview Maxim TSSOP-EP-20, TQFN-16
0% MAX5097 MAX5097 product overviewMAX5097 product overview Maxim TSSOP-EP-20, TQFN-16
0% LM2671 LM2671 product overviewLM2671 product overview Texas Instruments PDIP-8, SOIC-8, WSON-16
0% LM2672 LM2672 product overviewLM2672 product overview Texas Instruments PDIP-8, SOIC-8, WSON-16
25% LT1676 LT1676 product overviewLT1676 product overview Linear Technology SO-8
25% LT1777 LT1777 product overviewLT1777 product overview Linear Technology SO-16
25% LT3437 LT3437 product overviewLT3437 product overview Linear Technology TSSOP-16, DFN-10

Inductor suggestions

Below you can find matching inductors from Wuerth Elektronik calculated on the maximum parameters of LT1776.

V-IN max. 40 V, I-OUT 0.55 A, V-OUT min. 1.24 V, Frequency typ. 200 kHz
Order Code Spec L (µH) IR (A) ISAT (A) RDC (mΩ) L x W x H (mm)
74404042330 33.0 0.7 0.9 460.00 4 x 4 x 1.8
74404052330 33.0 1.0 1.1 387.00 5 x 5 x 2
74404054330 33.0 1.2 1.4 188.00 5 x 5 x 4
74404063330 33.0 1.2 1.5 185.00 6 x 6 x 2.8
744052270 27.0 0.8 0.8 250.00 5.8 x 5.8 x 2
744053270 27.0 1.1 0.8 135.00 5.8 x 5.8 x 3
744053330 33.0 0.9 0.8 180.00 5.8 x 5.8 x 3
744062330 33.0 0.9 0.8 150.00 6.8 x 6.8 x 2.5
744065330 33.0 1.6 1.3 139.00 10 x 10 x 3.1
744071330 33.0 1.9 1.5 95.00 8 x 8 x 4.6
74408942330 33.0 0.8 1.1 424.00 4.8 x 4.8 x 3.1
74408943330 33.0 0.9 1.2 259.00 4.8 x 4.8 x 4.1
7447462330 33.0 1.4 1.4 153.00 5.5 x 5.5 x 8.5
744773127 27.0 0.9 1.0 328.00 4 x 4.5 x 3.5
744773133 33.0 0.9 0.9 370.00 4 x 4.5 x 3.5
744773139 39.0 0.8 0.9 418.00 4 x 4.5 x 3.5
744775133 33.0 1.4 1.5 87.80 7 x 7.8 x 5.5
744775139 39.0 1.3 1.3 116.00 7 x 7.8 x 5.5
744777133 33.0 1.1 1.4 140.00 7.3 x 7.3 x 4.5
744777139 39.0 1.1 1.2 145.00 7.3 x 7.3 x 4.5
7447779133 33.0 1.1 1.4 140.00 7.3 x 7.3 x 4.5
7447779139 39.0 1.1 1.2 145.00 7.3 x 7.3 x 4.5
744778127 27.0 1.3 1.3 140.00 7.3 x 7.3 x 3.4
744778133 33.0 1.2 1.2 153.00 7.3 x 7.3 x 3.4
744778139 39.0 1.0 1.1 214.00 7.3 x 7.3 x 3.4
7447789127 27.0 1.3 1.4 130.00 7.3 x 7.3 x 3.5
7447789133 33.0 1.2 1.2 153.00 7.3 x 7.3 x 3.5
7447789139 39.0 1.0 1.1 209.00 7.3 x 7.3 x 3.5
744787330 33.0 1.5 1.3 137.00 7.8 x 7 x 5
784773127 27.0 0.9 1.0 328.00 4 x 4.5 x 3.5
784773133 33.0 0.9 0.9 370.00 4 x 4.5 x 3.5
784773139 39.0 0.8 0.9 418.00 4 x 4.5 x 3.5
784774127 27.0 1.2 1.4 133.00 5.2 x 5.8 x 4.85
784774133 33.0 1.1 1.2 150.00 5.2 x 5.8 x 4.85
784774139 39.0 0.9 1.1 215.00 5.2 x 5.8 x 4.85
784775133 33.0 1.4 1.5 89.00 7 x 7.8 x 5.5
784775139 39.0 1.3 1.3 116.00 7 x 7.8 x 5.5
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