LT3742 Buck Controller overview

Description

Manufacturer
 
Category
Sub-Category

LT3742 is a 2 channel, 2 phase non-sync Buck Controller. The maximum input voltage ranges from 4.00 V to 30.00 V and output current goes up to 4.00 A.

The Controller features fixed 500 kHz switching frequency which results in a typical inductor size of 6.5 uH and a peak efficiency of 93 %. The LT3742 is available in  package option(s): .

Parameter and features overview

ParameterValueReplacement
Search Filter
Nr. of Channel 2
V-IN min. 4.00 V
V-IN max. 30.00 V
I-OUT? 4.00 A
V-OUT min. 0.80 V
V-OUT max. 30.00 V
V-OUT adjustable
V-OUT programmable no
sync/non-sync non-sync
Frequency typ. 500 kHz
Frequency adj. fixed
Frequency adj. min.
Frequency adj. max.
ext.clock sync. no
ext.clock Frequency min.
ext.clock Frequency max.
Softstart yes
Softstart adjustable yes
Tracking yes
Power Good (PG) yes
Enable no
Operating min.
Operating max.
Junction min. -40 °C
Junction max. 125 °C
thermal shutdown typ.
Inductor size typ. 6.5 uH
Automotive AEC-Q100 no
Light-Load Mode no
Single/ Multiphase multi
Nr. of Phases 2
Peak Efficiency 93 %
component count min. 25
current limit adjustable no
Nr.of package options
CSP
SOT
MSOP
QFN/DFN
SO/SOIC
SOP
DIP

LT3742 Datasheet

Link to the most up-to-date LT3742 datasheet and the product page for EVM, tools and support information.

LT3742

LT3742 inventory, samples and price

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Available Distributors with stock: 5

ARROW-NAC (1)

ProductStockPriceBuy
LT3742EUF#PBF62
13.29 USD
1002.79 USD
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Chip-One-Stop (2)

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LT3742EUF#PBF62
15.02 USD
104.22 USD
254.18 USD
503.98 USD
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LT3742EUF#PBF62
15.02 USD
104.22 USD
254.18 USD
503.98 USD
Buy Now

DIGI-KEY (2)

ProductStockPriceBuy
LT3742EUF#PBF602
14.90 USD
253.29 USD
1002.79 USD
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DC927A4
1125.63 USD
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LT3742EUF#TRPBF0
25002.89 USD
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Element14 (1)

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LT3742EUF#PBF82
17.83 USD
255.26 USD
1004.46 USD
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FARNELL-ELEMENT14 (1)

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LT3742EUF#PBF82Buy Now

Available Distributors without stock: 1

NEWARK (0)

ProductStockPriceBuy
LT3742EUF#PBF0
14.91 USD
253.30 USD
1002.79 USD
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Available Distributors with stock: 0

no online Distributor with LT3742 stock available

Table with equivalents and alternatives

The following Buck Controller are similar to LT3742. Or, compare LT3742 side-by-side with other Buck Controller via the Comparison function.

no alternatives found

Inductor suggestions

Below you can find matching inductors from Wuerth Elektronik calculated on the maximum parameters of LT3742.

V-IN max. 30 V, I-OUT 4 A, V-OUT min. 0.8 V, Frequency typ. 500 kHz
Order Code Spec L (µH) IR (A) ISAT (A) RDC (mΩ) L x W x H (mm)
74404054010 1.0 4.9 8.0 12.00 5 x 5 x 4
74404054015 1.5 4.3 6.9 15.00 5 x 5 x 4
74404063010 1.0 5.2 7.5 10.00 6 x 6 x 2.8
74404063012 1.2 6.2 8.5 11.00 6 x 6 x 2.8
74404063015 1.5 4.6 6.6 13.00 6 x 6 x 2.8
74404064015 1.5 5.0 9.7 12.00 6 x 6 x 4.5
74404084015 1.5 5.7 9.0 10.00 8 x 8 x 4.2
744065001 1.0 8.0 9.5 4.90 10 x 10 x 3.1
7440650015 1.5 7.2 7.5 7.30 10 x 10 x 3.1
7440660015 1.5 7.2 10.0 5.20 10 x 10 x 4.1
744316150 1.5 9.0 9.0 8.15 5.5 x 5.3 x 4.3
74437324010 1.0 5.0 9.0 22.00 4.45 x 4.06 x 2
74437324012 1.2 4.7 8.5 25.00 4.45 x 4.06 x 2
74438336010 1.0 4.0 5.0 26.00 3 x 3 x 2
74438356010 1.0 7.2 9.0 12.00 4.1 x 4.1 x 2.1
74438356012 1.2 5.8 9.0 15.00 4.1 x 4.1 x 2.1
74438356015 1.5 5.8 7.8 16.00 4.1 x 4.1 x 2.1
744732015 1.5 7.0 9.0 7.00 9 x 9 x 8
7447462010 1.0 8.5 8.0 6.00 5.5 x 5.5 x 8.5
7447713015 1.5 6.2 9.5 13.70 10 x 10 x 3
744772010 1.0 7.5 10.0 4.70 7.8 x 7.8 x 10
7447730 1.0 4.0 5.7 14.00 4 x 4.5 x 3.5
7447779001 1.0 5.3 9.5 10.00 7.3 x 7.3 x 4.5
74477790015 1.5 4.3 7.3 15.00 7.3 x 7.3 x 4.5
744778001 1.0 5.4 6.4 9.00 7.3 x 7.3 x 3.4
7447786001 1.0 5.0 5.5 28.00 5.9 x 6.2 x 5.1
7447789001 1.0 5.4 6.4 10.00 7.3 x 7.3 x 3.5
744787012 1.2 4.9 6.0 8.50 7.8 x 7 x 5
7847730 1.0 4.0 5.7 14.00 4 x 4.5 x 3.5
784775012 1.2 6.2 8.0 5.00 7 x 7.8 x 5.5
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