R1273 Buck Converter overview

Description

Manufacturer
 
Category
Sub-Category

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.

OEMSecrets.com
findchips.com

Available Distributors with stock: 3

Digi-Key (14)

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Available Distributors without stock: 2

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Digi-Key

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RS Components

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500.70 GBP
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500.73 GBP
1000.59 GBP
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50.84 GBP
500.76 GBP
1000.62 GBP
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Sager

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DR127-3R3-R 0
10.72 $
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show stock=0hide stock=0

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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