R1273 Buck Converter overview

Description

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R1273 is a 34.00 V sync Buck Converter from with 14.00 A output current. The maximum 34.00 V input voltage can be regulated down into a 0.70 V to 5.30 V output voltage.

It requires are a typical inductor size of 1.50 µH, a typical external component count of 16 and achieves a peak efficiency of 96 %. Further R1273 characteristics are a adjustable 600 kHz switching frequency and 1 available package option(s): QFB-32 .

For the R1273 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. 4.50 V
V-IN max. 34.00 V
I-OUT? 14.00 A
V-OUT min. 0.70 V
V-OUT max. 5.30 V
V-OUT adjustable V
V-OUT programmable no
sync/non-sync sync
Frequency typ. 600 kHz
Frequency adjustable
Frequency selectable
ext.clock sync. no
Frequency adj./ ext.clock min. 250 kHz
Frequency adj./ ext.clock max 1000 kHz
Softstart yes
Softstart adjustable yes
Tracking no
PG/Power OK yes
Quiescent current max. 44 µA
Operating min. -40 °C
Operating max. 125 °C
Junction min. -40 °C
Junction max. 150 °C
thermal shutdown typ. 160 °C
Inductor size typ. 1.50 µH
Inductor suggested by Würth Elektronik
Automotive AEC-Q100 yes
Light-Load-Mode yes
Topology Buck
Peak Efficiency 96 %
Component count min. 16
current limit adjustable no
Nr.of packages 1
CSP
SC70
SOT
MSOP
QFN/DFN QFB-32
SO/SOIC
SOP
DIP
TO
DDPAK

R1273 Datasheet

Link to the most up-to-date R1273 datasheet and the product page for EVM, tools and support information.

R1273

R1273 Sample stock and distributor price breaks

R1273 prices and online available distributors.

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Available Distributors with stock: 0

no online Distributor with R1273 stock available

Available Distributors with stock: 0

no online Distributor with R1273 stock available

List of equivalents and alternatives

The following DC/DC Buck Converter are similar to R1273. Optional, compare R1273 side-by-side with other Buck 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 R1273.

V-IN max. 34 V, I-OUT 14 A, V-OUT min. 0.7 V, Frequency typ. 600 kHz
Order Code Spec L (µH) IR (A) ISAT (A) RDC (mΩ) L x W x H (mm)
744303022 0.2 31.0 32.0 0.33 10 x 6.8 x 5
744304022 0.2 26.0 23.0 0.17 11.5 x 11.8 x 3.8
744305033 0.3 28.0 26.0 0.16 13.5 x 13.3 x 5.2
744306025 0.3 26.0 32.0 0.30 10.5 x 10.3 x 5.5
744306030 0.3 26.0 24.0 0.30 10.5 x 10.3 x 5.5
744307022 0.2 29.0 29.0 0.33 7.4 x 7.2 x 7.2
744308033 0.3 27.0 30.0 0.37 10.1 x 7 x 7
7443081030 0.3 38.0 32.0 0.29 9.4 x 6.2 x 8.1
744310024 0.2 18.0 40.0 1.80 7 x 6.9 x 3.3
744311022 0.2 21.0 32.0 1.10 7 x 6.9 x 4
744314024 0.2 20.0 28.0 1.00 7 x 6.9 x 5
744316022 0.2 20.0 25.0 1.25 5.5 x 5.3 x 4.3
744316033 0.3 18.5 20.0 1.75 5.5 x 5.3 x 4.3
744323033 0.3 18.0 36.0 2.17 10.6 x 10.6 x 3.1
7443340030 0.3 20.5 36.0 2.30 8.4 x 7.9 x 7.5
744355230 0.3 22.0 35.0 1.10 10.5 x 10.2 x 4.2
744373560022 0.2 20.0 40.0 1.47 8.64 x 8.5 x 3
744373560033 0.3 16.0 39.0 2.06 8.64 x 8.5 x 3
744373770022 0.2 25.0 40.0 0.75 13.5 x 12.6 x 3.7
744373770033 0.3 24.0 35.0 0.88 13.5 x 12.6 x 3.7
744393440033 0.3 16.5 31.0 2.10 6.65 x 6.45 x 3.3
7447797022 0.2 16.0 32.0 2.90 10.2 x 10.2 x 4.5
7447798022 0.2 19.0 20.0 1.60 10.2 x 10.2 x 6.4
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