XRP6658 Buck Converter overview
Description
XRP6658 is a 5.50 V sync Buck Converter from with 1.00 A output current. The maximum 5.50 V input voltage can be regulated down into a 0.60 V to 5.00 V output voltage.
It requires are a typical inductor size of 2.20 µH, a typical external component count of 6 and achieves a peak efficiency of 97 %. Further XRP6658 characteristics are a fixed 1500 kHz switching frequency and 1 available package option(s): SOT23-5 .
Parameter overview and features with replacement search
For the XRP6658 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. | 2.50 V | |
V-IN max. | 5.50 V | |
I-OUT? | 1.00 A | |
V-OUT min. | 0.60 V | |
V-OUT max. | 5.00 V | |
V-OUT | adjustable V | |
V-OUT programmable | ![]() |
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sync/non-sync | sync | |
Frequency typ. | 1500 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. | -188 µA | |
Operating min. | -40 °C | |
Operating max. | 85 °C | |
Junction min. | ||
Junction max. | 125 °C | |
thermal shutdown typ. | 150 °C | |
Inductor size typ. | 2.20 µH | |
Inductor suggested by Würth Elektronik | ||
Automotive AEC-Q100 | ![]() |
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Light-Load-Mode | ![]() |
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Topology | Buck | |
Peak Efficiency | 97 % | |
Component count min. | 6 | |
current limit adjustable | ![]() |
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Nr.of packages | 1 | |
CSP | ||
SC70 | ||
SOT | SOT23-5 | |
MSOP | ||
QFN/DFN | ||
SO/SOIC | ||
SOP | ||
DIP | ||
TO | ||
DDPAK |
XRP6658 Datasheet
Link to the most up-to-date XRP6658 datasheet and the product page for EVM, tools and support information.
XRP6658 Sample stock and distributor price breaks
XRP6658 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 XRP6658. Optional, compare XRP6658 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 XRP6658.
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 | |
744028001 | 1.0 | 1.8 | 1.5 | 65.00 | 2.8 x 2.8 x 1.2 | |
744029001 | 1.0 | 2.2 | 1.6 | 45.00 | 2.8 x 2.8 x 1.5 | |
744031001 | 1.5 | 1.8 | 1.6 | 40.00 | 3.8 x 3.8 x 1.8 | |
744031010 | 1.0 | 2.0 | 1.6 | 26.00 | 3.8 x 3.8 x 1.8 | |
74404024010 | 1.0 | 2.2 | 2.6 | 37.00 | 2.5 x 2 x 1.2 | |
74404024015 | 1.5 | 1.9 | 2.4 | 65.00 | 2.5 x 2 x 1.2 | |
74404032010 | 1.0 | 2.2 | 3.0 | 33.00 | 3 x 3 x 1.5 | |
74404032015 | 1.5 | 2.0 | 2.3 | 40.00 | 3 x 3 x 1.5 | |
744042001 | 1.0 | 2.7 | 2.6 | 20.00 | 4.8 x 4.8 x 2 | |
7440430012 | 1.2 | 3.1 | 2.8 | 15.00 | 4.8 x 4.8 x 3 | |
74438321010 | 1.0 | 1.3 | 2.5 | 163.00 | 2.5 x 2 x 0.6 | |
74438343015 | 1.5 | 1.3 | 3.0 | 150.00 | 2.5 x 1.6 x 0.6 | |
74479262210 | 1.0 | 1.2 | 1.7 | 170.00 | 1.6 x 0.8 x 0.8 | |
74479275210 | 1.0 | 1.8 | 2.1 | 69.00 | 2 x 1.25 x 1 | |
74479276210 | 1.0 | 2.0 | 2.5 | 65.00 | 2 x 1.6 x 1 | |
74479876210 | 1.0 | 1.5 | 1.5 | 70.00 | 2 x 1.6 x 1 | |
74479889210 | 1.0 | 2.0 | 2.0 | 85.00 | 2.5 x 2 x 1.2 | |
74479899210 | 1.0 | 2.3 | 2.5 | 50.00 | 3.2 x 2.6 x 1.2 | |
74479976210 | 1.0 | 1.8 | 2.4 | 75.00 | 2 x 1.6 x 0.5 | |
74479976215 | 1.5 | 1.6 | 1.9 | 100.00 | 2 x 1.6 x 0.5 | |
78438321010 | 1.0 | 1.3 | 2.5 | 163.00 | 2.5 x 2 x 0.6 |