RT7237B Buck Converter overview
Description
RT7237B is a 18.00 V sync Buck Converter from with 2.00 A output current. The maximum 18.00 V input voltage can be regulated down into a 0.80 V to 12.00 V output voltage.
It requires are a typical inductor size of 3.60 µH, a typical external component count of 10 and achieves a peak efficiency of 95 %. Further RT7237B characteristics are a fixed 1200 kHz switching frequency and 1 available package option(s): PSOP-8 .
Parameter overview and features with replacement search
For the RT7237B 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.
Parameter | Value | Replacement Search Filter |
V-IN min. | 4.50 V | |
V-IN max. | 18.00 V | |
I-OUT? | 2.00 A | |
V-OUT min. | 0.80 V | |
V-OUT max. | 12.00 V | |
V-OUT | adjustable V | |
V-OUT programmable | ![]() |
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sync/non-sync | sync | |
Frequency typ. | 1200 kHz | |
Frequency | fixed | |
Frequency selectable | ||
ext.clock sync. | ![]() |
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Frequency adj./ ext.clock min. | ||
Frequency adj./ ext.clock max | ||
Softstart | ![]() |
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Softstart adjustable | ![]() |
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Tracking | ![]() |
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PG/Power OK | ![]() |
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Quiescent current max. | 1200 µA | |
Operating min. | -40 °C | |
Operating max. | 85 °C | |
Junction min. | -40 °C | |
Junction max. | 125 °C | |
thermal shutdown typ. | 150 °C | |
Inductor size typ. | 3.60 µH | |
Inductor suggested by Würth Elektronik | ||
Automotive AEC-Q100 | ![]() |
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Light-Load-Mode | ![]() |
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Topology | Buck | |
Peak Efficiency | 95 % | |
Component count min. | 10 | |
current limit adjustable | ![]() |
|
Nr.of packages | 1 | |
CSP | ||
SC70 | ||
SOT | ||
MSOP | ||
QFN/DFN | ||
SO/SOIC | ||
SOP | PSOP-8 | |
DIP | ||
TO | ||
DDPAK |
RT7237B Datasheet
Link to the most up-to-date RT7237B datasheet and the product page for EVM, tools and support information.
RT7237B Sample stock and distributor price breaks
RT7237B prices and online available distributors.


Available Distributors with stock: 0
Available Distributors with stock: 0
List of equivalents and alternatives
The following DC/DC Buck Converter are similar to RT7237B. Optional, compare RT7237B side-by-side with other Buck Converter via the Comparison function.
Inductor suggestions
Below you can find matching inductors from Wuerth Elektronik calculated on the maximum parameters of RT7237B.
Order Code | Spec | L (µH) | IR (A) | ISAT (A) | RDC (mΩ) | L x W x H (mm) |
744025001 | 1.2 | 2.6 | 3.0 | 36.00 | 2.8 x 2.8 x 3 | |
74404024010 | 1.0 | 2.2 | 2.6 | 37.00 | 2.5 x 2 x 1.2 | |
74404032010 | 1.0 | 2.2 | 3.0 | 33.00 | 3 x 3 x 1.5 | |
74404041010 | 1.0 | 2.5 | 3.4 | 41.00 | 4 x 4 x 1.2 | |
74404042010 | 1.0 | 3.2 | 4.8 | 27.00 | 4 x 4 x 1.8 | |
744042001 | 1.0 | 2.7 | 2.6 | 20.00 | 4.8 x 4.8 x 2 | |
74404300082 | 0.8 | 3.5 | 3.7 | 14.00 | 4.8 x 4.8 x 3 | |
7440430012 | 1.2 | 3.1 | 2.8 | 15.00 | 4.8 x 4.8 x 3 | |
7440520012 | 1.2 | 3.0 | 3.5 | 20.00 | 5.8 x 5.8 x 2 | |
744062001 | 1.0 | 4.8 | 4.6 | 10.00 | 6.8 x 6.8 x 2.5 | |
7440680010 | 1.0 | 2.8 | 3.3 | 32.00 | 8 x 8 x 1.2 | |
7440690010 | 1.0 | 3.6 | 3.8 | 21.00 | 8 x 8 x 1.5 | |
7440700012 | 1.2 | 4.8 | 4.2 | 12.50 | 8 x 8 x 2 | |
744383230082 | 0.8 | 2.6 | 4.3 | 53.00 | 2.5 x 2 x 1 | |
74438323010 | 1.0 | 2.5 | 4.0 | 63.00 | 2.5 x 2 x 1 | |
74438324010 | 1.0 | 2.8 | 4.9 | 49.00 | 2.5 x 2 x 1.2 | |
74438324012 | 1.2 | 2.4 | 4.5 | 67.00 | 2.5 x 2 x 1.2 | |
74438335010 | 1.0 | 2.7 | 4.5 | 39.00 | 3 x 3 x 1.5 | |
74438336010 | 1.0 | 4.0 | 5.0 | 26.00 | 3 x 3 x 2 | |
74438336012 | 1.2 | 3.9 | 4.8 | 30.00 | 3 x 3 x 2 | |
7447785001 | 1.0 | 3.5 | 4.5 | 31.00 | 5.9 x 6.2 x 3.3 | |
74479276210 | 1.0 | 2.0 | 2.5 | 65.00 | 2 x 1.6 x 1 | |
74479276210C | 1.0 | 2.1 | 3.1 | 53.00 | 2 x 1.25 x 1 | |
74479287210 | 1.0 | 2.4 | 4.0 | 55.00 | 2.5 x 2 x 1 | |
74479288210 | 1.0 | 2.4 | 4.2 | 40.00 | 2.5 x 2 x 1.2 | |
74479298210 | 1.0 | 2.5 | 4.0 | 45.00 | 3.2 x 2.5 x 1 | |
74479899210 | 1.0 | 2.3 | 2.5 | 50.00 | 3.2 x 2.6 x 1.2 | |
784383230082 | 0.8 | 2.6 | 4.3 | 53.00 | 2.5 x 2 x 1 | |
78438323010 | 1.0 | 2.5 | 4.0 | 63.00 | 2.5 x 2 x 1 | |
78438335010 | 1.0 | 2.7 | 4.5 | 39.00 | 3 x 3 x 1.5 |