TPS54040A Buck Converter overview

Description

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TPS54040A is a 42.00 V non-sync Buck Converter from with 0.50 A output current. The maximum 42.00 V input voltage can be regulated down into a 0.80 V to 39.00 V output voltage.

It requires are a typical inductor size of 47.00 µH, a typical external component count of 12 and achieves a peak efficiency of 91 %. Further TPS54040A characteristics are a adjustable 581 kHz switching frequency and 2 available package option(s): MSOP-10 SON-10 .

For the TPS54040A 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. 3.50 V
V-IN max. 42.00 V
I-OUT? 0.50 A
V-OUT min. 0.80 V
V-OUT max. 39.00 V
V-OUT adjustable V
V-OUT programmable no
sync/non-sync non-sync
Frequency typ. 581 kHz
Frequency adjustable
Frequency selectable
ext.clock sync. yes
Frequency adj./ ext.clock min. 100 kHz
Frequency adj./ ext.clock max 2500 kHz
Softstart yes
Softstart adjustable yes
Tracking yes
PG/Power OK yes
Quiescent current max. 136 µA
Operating min.
Operating max.
Junction min. -40 °C
Junction max. 150 °C
thermal shutdown typ. 182 °C
Inductor size typ. 47.00 µH
Inductor suggested by Würth Elektronik
Automotive AEC-Q100 no
Light-Load-Mode yes
Topology Buck
Peak Efficiency 91 %
Component count min. 12
current limit adjustable no
Nr.of packages 2
CSP
SC70
SOT
MSOP MSOP-10
QFN/DFN SON-10
SO/SOIC
SOP
DIP
TO
DDPAK

TPS54040A Datasheet

Link to the most up-to-date TPS54040A datasheet and the product page for EVM, tools and support information.

TPS54040A

TPS54040A Sample stock and distributor price breaks

TPS54040A prices and online available distributors.

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Available Distributors with stock: 0

no online Distributor with TPS54040A stock available

Available Distributors with stock: 0

no online Distributor with TPS54040A stock available

List of equivalents and alternatives

The following DC/DC Buck Converter are similar to TPS54040A. Optional, compare TPS54040A side-by-side with other Buck Converter via the Comparison function.

Variation Compare Product Manufacturer Package
0% TPS54040-Q1 TPS54040-Q1 product overviewTPS54040-Q1 product overview Texas Instruments SON-10, MSOP-10
0% TPS57060-Q1 TPS57060-Q1 product overviewTPS57060-Q1 product overview Texas Instruments SON-10, MSOP-10
0% TPS57160-Q1 TPS57160-Q1 product overviewTPS57160-Q1 product overview Texas Instruments SON-10, MSOP-10

Inductor suggestions

Below you can find matching inductors from Wuerth Elektronik calculated on the maximum parameters of TPS54040A.

V-IN max. 42 V, I-OUT 0.5 A, V-OUT min. 0.8 V, Frequency typ. 581 kHz
Order Code Spec L (µH) IR (A) ISAT (A) RDC (mΩ) L x W x H (mm)
744025006 6.8 1.1 1.3 142.00 2.8 x 2.8 x 3
744025100 10.0 1.0 1.1 170.00 2.8 x 2.8 x 3
744029006 6.8 0.8 0.7 250.00 2.8 x 2.8 x 1.5
744031006 6.8 0.9 0.8 135.00 3.8 x 3.8 x 1.8
74404024068 6.8 0.9 1.0 300.00 2.5 x 2 x 1.2
74404032068 6.8 1.2 0.9 120.00 3 x 3 x 1.5
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
744042006 6.8 1.5 1.3 80.00 4.8 x 4.8 x 2
744042008 8.2 1.4 1.1 100.00 4.8 x 4.8 x 2
744042100 10.0 1.3 1.0 120.00 4.8 x 4.8 x 2
744043006 6.8 1.3 1.3 80.00 4.8 x 4.8 x 3
744043008 8.2 1.3 1.1 90.00 4.8 x 4.8 x 3
744043100 10.0 1.2 1.0 95.00 4.8 x 4.8 x 3
744052100 10.0 1.1 1.3 105.00 5.8 x 5.8 x 2
7440680068 6.8 1.4 1.2 127.00 8 x 8 x 1.2
7440680082 8.2 1.4 1.1 142.00 8 x 8 x 1.2
7440680100 10.0 1.2 1.0 177.00 8 x 8 x 1.2
7440690100 10.0 1.6 1.3 112.00 8 x 8 x 1.5
74479889268 6.8 0.8 0.7 500.00 2.5 x 2 x 1.2
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