LT3433 Buck-Boost Converter Overview

Description

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LT3433 is a 60.00 V, 0.40 A output current non-sync Buck-Boost Converter from . The 4.00 V to 60.00 V input range can be converted into a 3.30 V to 20.00 V output voltage.

The Buck-Boost Converter features fixed 200 kHz switching frequency, requires a typical inductor size of 100.0 µH and provides a peak efficiency of 82 %. LT3433 circuitry consists typically of 15 external components and is available in 1 package option(s): TSSOP-16 .

For LT3433 replacement search, 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. 4.00 V
V-IN max. 60.00 V
I-OUT? 0.40 A
V-OUT min. 3.30 V
V-OUT max. 20.00 V
V-OUT fixed adjustable
V-OUT programmable no
sync/non-sync non-sync
Frequency typ. 200 kHz
Frequency adjustable fixed
Frequency adjustable min.
Frequency adjustable max.
ext.clock sync no
Frequency sync. min.
Frequency sync. max.
Softstart yes
Softstart adjustable yes
Tracking no
PG/Power OK no
Quiescent current max. 940 µA
Operating min.
Operating max.
Junction min. -40 °C
Junction max. 125 °C
thermal shutdown typ.
Inductor size typ. 100.0 µH
Automotive AEC-Q100 no
Light-Load Mode yes
Topology Buck-Boost
Peak Efficiency 82 %
Component count min. 15
current limit adjustable no
LBI/LBO no
Nr. of package options 1
CSP
SOT
MSOP
QFN
SO/SOIC
SOP TSSOP-16

Charts and pictures

LT3433 Datasheet

Link to the most up-to-date LT3433 datasheet and the product page for EVM, tools and support information.

LT3433

LT3433 Distributor price breaks and sample stock

LT3433 prices and available buy online distributors. Optional, check regional sources for price and inventory: for Russia via efind, for South Korea via ICPart, for Japan via ICBAIBAI, for China via IC5858 or International via IC2IC.

OEMSecrets.com
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Available Distributors with stock: 0

no online Distributor with LT3433 stock available

Available Distributors with stock: 0

no online Distributor with LT3433 stock available

Equivalents and alternatives

The following Buck-Boost DC/DC Converter are similar to LT3433. Optional, compare LT3433 side-by-side with other selected Buck-Boost 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 LT3433.

V-IN max. 60 V, I-OUT 0.4 A, V-OUT min. 3.3 V, Frequency typ. 200 kHz
Order Code Spec L (µH) IR (A) ISAT (A) RDC (mΩ) L x W x H (mm)
74404042101 100.0 0.4 0.6 1,430.00 4 x 4 x 1.8
74404052101 100.0 0.6 0.6 1,090.00 5 x 5 x 2
74404054101 100.0 0.7 0.8 560.00 5 x 5 x 4
74404063101 100.0 0.7 0.7 500.00 6 x 6 x 2.8
74404064101 100.0 0.8 1.0 433.00 6 x 6 x 4.5
74404064121 120.0 0.8 1.0 520.00 6 x 6 x 4.5
744065101 100.0 1.0 0.9 365.00 10 x 10 x 3.1
744065121 120.0 0.9 0.9 428.00 10 x 10 x 3.1
744065820 82.0 1.1 1.0 323.00 10 x 10 x 3.1
744071101 100.0 1.0 0.9 270.00 8 x 8 x 4.6
74408942820 82.0 0.5 0.7 940.00 4.8 x 4.8 x 3.1
74408943101 100.0 0.5 0.7 770.00 4.8 x 4.8 x 4.1
74408943820 82.0 0.6 0.8 689.00 4.8 x 4.8 x 4.1
744741101 100.0 1.1 0.9 420.00 8 x 8 x 6
7447462101 100.0 0.8 0.8 450.00 5.5 x 5.5 x 8.5
744772121 120.0 0.9 1.0 181.00 7.8 x 7.8 x 10
744775182 82.0 0.9 1.0 208.00 7 x 7.8 x 5.5
74477520 100.0 0.8 0.9 248.20 7 x 7.8 x 5.5
744775210 120.0 0.7 0.8 308.00 7 x 7.8 x 5.5
744776212 120.0 0.9 1.0 243.00 9 x 10 x 5.9
744777182 82.0 0.8 0.9 257.00 7.3 x 7.3 x 4.5
74477720 100.0 0.8 0.8 290.00 7.3 x 7.3 x 4.5
744777212 120.0 0.7 0.7 400.00 7.3 x 7.3 x 4.5
7447779182 82.0 0.8 0.9 250.00 7.3 x 7.3 x 4.5
744777920 100.0 0.8 0.8 290.00 7.3 x 7.3 x 4.5
7447779212 120.0 0.7 0.7 396.00 7.3 x 7.3 x 4.5
744778182 82.0 0.7 0.8 479.00 7.3 x 7.3 x 3.4
74477820 100.0 0.6 0.8 585.00 7.3 x 7.3 x 3.4
744778212 120.0 0.6 0.7 634.00 7.3 x 7.3 x 3.4
744778520 100.0 0.7 0.5 950.00 5.9 x 6.2 x 3.3
7447789182 82.0 0.7 0.8 470.00 7.3 x 7.3 x 3.5
744778920 100.0 0.6 0.8 585.00 7.3 x 7.3 x 3.5
7447789212 120.0 0.6 0.7 563.00 7.3 x 7.3 x 3.5
744787101 100.0 1.0 0.9 396.00 7.8 x 7 x 5
744787121 120.0 0.7 0.8 545.00 7.8 x 7 x 5
744787820 82.0 1.0 0.9 278.00 7.8 x 7 x 5
784774182 82.0 0.6 0.7 475.00 5.2 x 5.8 x 4.85
78477420 100.0 0.6 0.7 510.00 5.2 x 5.8 x 4.85
784774212 120.0 0.5 0.6 660.00 5.2 x 5.8 x 4.85
784775182 82.0 0.9 1.0 248.00 7 x 7.8 x 5.5
78477520 100.0 0.8 0.9 281.00 7 x 7.8 x 5.5
784775212 120.0 0.7 0.8 340.00 7 x 7.8 x 5.5
784776212 120.0 0.9 1.0 243.00 9 x 10 x 5.9
784777101 100.0 0.7 0.8 390.00 7.3 x 7.3 x 4.3
784778101 100.0 0.7 0.8 600.00 7.3 x 7.3 x 3.5
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