RT2808A Buck Converter overview
Description
RT2808A is a 36.00 V non-sync Buck Converter from with 3.00 A output current. The maximum 36.00 V input voltage can be regulated down into a 1.22 V to 26.00 V output voltage.
It requires are a typical inductor size of 12.00 µH, a typical external component count of 8 and achieves a peak efficiency of 92 %. Further RT2808A characteristics are a fixed 500 kHz switching frequency and 1 available package option(s): PSOP-8 .
Parameter overview and features with replacement search
For the RT2808A 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. | 5.50 V | |
V-IN max. | 36.00 V | |
I-OUT? | 3.00 A | |
V-OUT min. | 1.22 V | |
V-OUT max. | 26.00 V | |
V-OUT | adjustable V | |
V-OUT programmable | ![]() |
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sync/non-sync | non-sync | |
Frequency typ. | 500 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. | 1000 µA | |
Operating min. | -40 °C | |
Operating max. | 85 °C | |
Junction min. | -40 °C | |
Junction max. | 125 °C | |
thermal shutdown typ. | 160 °C | |
Inductor size typ. | 12.00 µH | |
Inductor suggested by Würth Elektronik | ||
Automotive AEC-Q100 | ![]() |
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Light-Load-Mode | ![]() |
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Topology | Buck | |
Peak Efficiency | 92 % | |
Component count min. | 8 | |
current limit adjustable | ![]() |
|
Nr.of packages | 1 | |
CSP | ||
SC70 | ||
SOT | ||
MSOP | ||
QFN/DFN | ||
SO/SOIC | ||
SOP | PSOP-8 | |
DIP | ||
TO | ||
DDPAK |
RT2808A Datasheet
Link to the most up-to-date RT2808A datasheet and the product page for EVM, tools and support information.
RT2808A Sample stock and distributor price breaks
RT2808A 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 RT2808A. Optional, compare RT2808A 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 RT2808A.
Order Code | Spec | L (µH) | IR (A) | ISAT (A) | RDC (mΩ) | L x W x H (mm) |
74404052022 | 2.2 | 3.0 | 3.6 | 31.60 | 5 x 5 x 2 | |
74404054022 | 2.2 | 3.8 | 5.3 | 19.00 | 5 x 5 x 4 | |
74404063022 | 2.2 | 3.8 | 5.6 | 20.00 | 6 x 6 x 2.8 | |
7440650022 | 2.2 | 6.2 | 5.9 | 11.00 | 10 x 10 x 3.1 | |
7440660022 | 2.2 | 6.7 | 6.8 | 7.70 | 10 x 10 x 4.1 | |
744071022 | 2.2 | 5.4 | 6.3 | 10.00 | 8 x 8 x 4.6 | |
74408943022 | 2.2 | 3.0 | 4.6 | 26.00 | 4.8 x 4.8 x 4.1 | |
74437324022 | 2.2 | 3.3 | 6.5 | 51.00 | 4.45 x 4.06 x 2 | |
74438356018 | 1.8 | 4.6 | 6.5 | 24.50 | 4.1 x 4.1 x 2.1 | |
74438356022 | 2.2 | 4.7 | 6.2 | 29.00 | 4.1 x 4.1 x 2.1 | |
7447462022 | 2.2 | 6.3 | 4.3 | 10.00 | 5.5 x 5.5 x 8.5 | |
744777002 | 2.2 | 6.0 | 6.5 | 13.00 | 7.3 x 7.3 x 4.5 | |
7447779002 | 2.2 | 4.2 | 6.0 | 16.00 | 7.3 x 7.3 x 4.5 | |
744778002 | 2.2 | 4.0 | 4.8 | 14.00 | 7.3 x 7.3 x 3.4 | |
7447786002 | 2.2 | 3.5 | 4.0 | 40.00 | 5.9 x 6.2 x 5.1 | |
7447789002 | 2.2 | 4.0 | 4.8 | 19.00 | 7.3 x 7.3 x 3.5 | |
744787027 | 2.7 | 4.4 | 4.5 | 13.50 | 7.8 x 7 x 5 | |
784775022 | 2.2 | 6.0 | 6.0 | 8.00 | 7 x 7.8 x 5.5 | |
784778022 | 2.2 | 3.1 | 5.0 | 42.00 | 7.3 x 7.3 x 3.5 |