RP504x-2.8 Buck Converter overview
Description
RP504x-2.8 is a 5.50 V sync Buck Converter from with 0.60 A output current. The maximum 5.50 V input voltage can be regulated down into a 2.80 V to 2.80 V output voltage.
It requires are a typical inductor size of 2.20 µH, a typical external component count of 3 and achieves a peak efficiency of 93 %. Further RP504x-2.8 characteristics are a fixed 2250 kHz switching frequency and 3 available package option(s): SOT23-5 DFN-6 .
Parameter overview and features with replacement search
For the RP504x-2.8 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. | 2.30 V | |
V-IN max. | 5.50 V | |
I-OUT? | 0.60 A | |
V-OUT min. | 2.80 V | |
V-OUT max. | 2.80 V | |
V-OUT | 2.800 V | |
V-OUT programmable | ![]() |
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sync/non-sync | sync | |
Frequency typ. | 2250 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. | 40 µA | |
Operating min. | -40 °C | |
Operating max. | 85 °C | |
Junction min. | ||
Junction max. | ||
thermal shutdown typ. | ||
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 | 93 % | |
Component count min. | 3 | |
current limit adjustable | ![]() |
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Nr.of packages | 3 | |
CSP | ||
SC70 | ||
SOT | SOT23-5 | |
MSOP | ||
QFN/DFN | DFN-6 | |
SO/SOIC | ||
SOP | ||
DIP | ||
TO | ||
DDPAK |
RP504x-2.8 Datasheet
Link to the most up-to-date RP504x-2.8 datasheet and the product page for EVM, tools and support information.
RP504x-2.8 Sample stock and distributor price breaks
RP504x-2.8 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 RP504x-2.8. Optional, compare RP504x-2.8 side-by-side with other Buck Converter via the Comparison function.
Variation | Compare | Product | Manufacturer | Package | |
0% | ADP2138-2,8 | ![]() |
Analog Devices | WLCSP-6 | |
0% | ADP2139-2,8 | ![]() |
Analog Devices | WLCSP-6 | |
0% | LM3671-2.8 | ![]() |
Texas Instruments | SOT23-5, DSBGA-5 | |
0% | RP508x-2.8 | ![]() |
Ricoh | DFN-6 | |
0% | RP505K-2.8 | ![]() |
Ricoh | DFN-8 | |
0% | RP509Z-1-2.8 | ![]() |
Ricoh | WLCSP-6 |
Inductor suggestions
Below you can find matching inductors from Wuerth Elektronik calculated on the maximum parameters of RP504x-2.8.
Order Code | Spec | L (µH) | IR (A) | ISAT (A) | RDC (mΩ) | L x W x H (mm) |
744028002 | 2.2 | 1.3 | 1.0 | 125.00 | 2.8 x 2.8 x 1.2 | |
744028003 | 3.3 | 1.0 | 0.9 | 185.00 | 2.8 x 2.8 x 1.2 | |
744029002 | 2.2 | 1.5 | 1.2 | 88.00 | 2.8 x 2.8 x 1.5 | |
744029003 | 3.3 | 1.3 | 1.0 | 110.00 | 2.8 x 2.8 x 1.5 | |
744030002 | 2.2 | 0.7 | 0.8 | 140.00 | 3.3 x 3.5 x 1.05 | |
744030003 | 3.3 | 0.7 | 0.7 | 198.00 | 3.3 x 3.5 x 1.05 | |
744031002 | 2.5 | 1.5 | 1.3 | 50.00 | 3.8 x 3.8 x 1.8 | |
74404024033 | 3.3 | 1.4 | 1.3 | 120.00 | 2.5 x 2 x 1.2 | |
74479887222A | 2.2 | 1.4 | 0.8 | 140.00 | 2.5 x 2 x 1 | |
74479888222 | 2.2 | 1.2 | 1.4 | 200.00 | 2.5 x 2 x 1 | |
74479888233 | 3.3 | 1.1 | 1.1 | 250.00 | 2.5 x 2 x 1 | |
74479889233 | 3.3 | 1.3 | 1.3 | 250.00 | 2.5 x 2 x 1.2 |