MAX1928-2.5 Buck Converter overview
Description
MAX1928-2.5 is a 5.50 V sync Buck Converter from with 0.80 A output current. The maximum 5.50 V input voltage can be regulated down into a 2.50 V to 2.50 V output voltage.
It requires are a typical inductor size of 4.70 µH, a typical external component count of 7 and achieves a peak efficiency of 92 %. Further MAX1928-2.5 characteristics are a fixed 1000 kHz switching frequency and 1 available package option(s): µMAX-10 .
Parameter overview and features with replacement search
For the MAX1928-2.5 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. | 2.60 V | |
V-IN max. | 5.50 V | |
I-OUT? | 0.80 A | |
V-OUT min. | 2.50 V | |
V-OUT max. | 2.50 V | |
V-OUT | 2.500 V | |
V-OUT programmable | ![]() |
|
sync/non-sync | sync | |
Frequency typ. | 1000 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. | 240 µA | |
Operating min. | -40 °C | |
Operating max. | 85 °C | |
Junction min. | ||
Junction max. | 150 °C | |
thermal shutdown typ. | 160 °C | |
Inductor size typ. | 4.70 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. | 7 | |
current limit adjustable | ![]() |
|
Nr.of packages | 1 | |
CSP | ||
SC70 | ||
SOT | ||
MSOP | ||
QFN/DFN | µMAX-10 | |
SO/SOIC | ||
SOP | ||
DIP | ||
TO | ||
DDPAK |
MAX1928-2.5 Datasheet
Link to the most up-to-date MAX1928-2.5 datasheet and the product page for EVM, tools and support information.
MAX1928-2.5 Sample stock and distributor price breaks
MAX1928-2.5 prices and online available distributors.


Available Distributors with stock: 3
AVNET-AMERICAS (1)
Product | Stock | Price | Buy | ||||||||||
MAX1928EUB15+ | 0 |
| Buy Now | ||||||||||
MAX1928EUB15+T | 5000 |
| Buy Now | ||||||||||
MAX1928EUB18+ | 0 |
| Buy Now | ||||||||||
MAX1928EUB18+T | 0 |
| Buy Now | ||||||||||
MAX1928EUB25+ | 0 |
| Buy Now | ||||||||||
MAX1928EUB25+T | 0 |
| Buy Now |
DIGI-KEY (3)
Product | Stock | Price | Buy | ||||||||||||||
MAX1928EUB15+ | 138 |
| Buy Now | ||||||||||||||
MAX1928EUB25+ | 200 |
| Buy Now | ||||||||||||||
MAX1928EUB18+ | 98 |
| Buy Now | ||||||||||||||
MAX1928EUB15+T | 0 |
| Buy Now | ||||||||||||||
MAX1928EUB18+T | 0 |
| Buy Now | ||||||||||||||
MAX1928EUB25+T | 0 |
| Buy Now |
Mouser-Electronics (3)
Available Distributors without stock: 1
AVNET-EUROPE (0)
Available Distributors with stock: 0
List of equivalents and alternatives
The following DC/DC Buck Converter are similar to MAX1928-2.5. Optional, compare MAX1928-2.5 side-by-side with other Buck Converter via the Comparison function.
Variation | Compare | Product | Manufacturer | Package | |
0% | ADP2120-2,5 | ![]() |
Analog Devices | QFN-10 | |
0% | TS30011-2.5 | ![]() |
Triune Systems | QFN-16 | |
0% | TS33001-2.5 | ![]() |
Triune Systems | QFN-16 | |
0% | TS30021-2.5 | ![]() |
Triune Systems | QFN-16 |
Inductor suggestions
Below you can find matching inductors from Wuerth Elektronik calculated on the maximum parameters of MAX1928-2.5.
Order Code | Spec | L (µH) | IR (A) | ISAT (A) | RDC (mΩ) | L x W x H (mm) |
744025003 | 3.3 | 1.5 | 1.8 | 85.00 | 2.8 x 2.8 x 3 | |
744025004 | 4.7 | 1.4 | 1.7 | 100.00 | 2.8 x 2.8 x 3 | |
744031003 | 3.6 | 1.4 | 1.1 | 66.00 | 3.8 x 3.8 x 1.8 | |
74404024033 | 3.3 | 1.4 | 1.3 | 120.00 | 2.5 x 2 x 1.2 | |
74404024047 | 4.7 | 1.1 | 1.2 | 175.00 | 2.5 x 2 x 1.2 | |
74404032033 | 3.3 | 1.5 | 1.5 | 70.00 | 3 x 3 x 1.5 | |
74404032047 | 4.7 | 1.3 | 1.2 | 96.00 | 3 x 3 x 1.5 | |
74404041033 | 3.3 | 1.8 | 2.1 | 69.00 | 4 x 4 x 1.2 | |
74404041047 | 4.7 | 1.6 | 1.9 | 91.00 | 4 x 4 x 1.2 | |
74404042047 | 4.7 | 1.7 | 2.2 | 70.00 | 4 x 4 x 1.8 | |
744042003 | 3.3 | 2.0 | 1.8 | 50.00 | 4.8 x 4.8 x 2 | |
7440420039 | 3.9 | 1.8 | 1.7 | 60.00 | 4.8 x 4.8 x 2 | |
744042004 | 4.7 | 1.7 | 1.7 | 70.00 | 4.8 x 4.8 x 2 | |
744042005 | 5.6 | 1.6 | 1.4 | 80.00 | 4.8 x 4.8 x 2 | |
744043003 | 3.3 | 2.2 | 1.8 | 30.00 | 4.8 x 4.8 x 3 | |
7440430039 | 3.9 | 1.7 | 1.7 | 50.00 | 4.8 x 4.8 x 3 | |
744043004 | 4.7 | 1.6 | 1.7 | 50.00 | 4.8 x 4.8 x 3 | |
744043005 | 5.6 | 1.4 | 1.3 | 70.00 | 4.8 x 4.8 x 3 | |
744045004 | 4.7 | 1.2 | 2.0 | 120.00 | 4.5 x 3.2 x 2.9 | |
7440450056 | 5.6 | 1.2 | 1.9 | 144.00 | 4.5 x 3.2 x 2.9 | |
7440520039 | 3.9 | 2.0 | 2.1 | 50.00 | 5.8 x 5.8 x 2 | |
744052005 | 5.0 | 1.7 | 1.8 | 50.00 | 5.8 x 5.8 x 2 | |
744053004 | 4.2 | 2.5 | 2.2 | 30.00 | 5.8 x 5.8 x 3 | |
7440530047 | 4.7 | 2.4 | 2.0 | 30.00 | 5.8 x 5.8 x 3 | |
744053005 | 5.3 | 2.3 | 1.9 | 30.00 | 5.8 x 5.8 x 3 | |
744062005 | 5.0 | 2.2 | 2.0 | 40.00 | 6.8 x 6.8 x 2.5 | |
7440680033 | 3.3 | 2.0 | 1.8 | 61.00 | 8 x 8 x 1.2 | |
7440680047 | 4.7 | 1.9 | 1.6 | 72.00 | 8 x 8 x 1.2 | |
7440680056 | 5.6 | 1.5 | 1.4 | 110.00 | 8 x 8 x 1.2 | |
7440690047 | 4.7 | 2.2 | 1.8 | 56.00 | 8 x 8 x 1.5 | |
7440700047 | 4.7 | 3.0 | 2.2 | 37.00 | 8 x 8 x 2 | |
7440700056 | 5.6 | 2.6 | 2.0 | 47.00 | 8 x 8 x 2 | |
74438323033 | 3.3 | 1.3 | 2.1 | 220.00 | 2.5 x 2 x 1 | |
74438323047 | 4.7 | 0.9 | 1.8 | 338.00 | 2.5 x 2 x 1 | |
74438324047 | 4.7 | 1.0 | 2.1 | 300.00 | 2.5 x 2 x 1.2 | |
74438324056 | 5.6 | 1.0 | 1.8 | 405.00 | 2.5 x 2 x 1.2 | |
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 | |
78438323033 | 3.3 | 1.3 | 2.1 | 220.00 | 2.5 x 2 x 1 | |
78438323047 | 4.7 | 0.9 | 1.8 | 338.00 | 2.5 x 2 x 1 |