AAT1151-2.5 Buck Converter overview
Description
AAT1151-2.5 is a 5.50 V sync Buck Converter from with 0.70 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 3.00 µH, a typical external component count of 5 and achieves a peak efficiency of 95 %. Further AAT1151-2.5 characteristics are a fixed 850 kHz switching frequency and 2 available package option(s): MSOP-8 QFN-16 .
Parameter overview and features with replacement search
For the AAT1151-2.5 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. | 2.70 V | |
| V-IN max. | 5.50 V | |
| I-OUT? | 0.70 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. | 850 kHz | |
| Frequency | fixed | |
| Frequency selectable | ||
| ext.clock sync. | |
|
| Frequency adj./ ext.clock min. | ||
| Frequency adj./ ext.clock max | ||
| Softstart |  |
|
| Softstart adjustable | |
|
| Tracking | |
|
| PG/Power OK | |
|
| Quiescent current max. | 300 µA | |
| Operating min. | -40 °C | |
| Operating max. | 85 °C | |
| Junction min. | -40 °C | |
| Junction max. | 150 °C | |
| thermal shutdown typ. | 140 °C | |
| Inductor size typ. | 3.00 µH | |
| Inductor suggested by Würth Elektronik | ||
| Automotive AEC-Q100 | |
|
| Light-Load-Mode | |
|
| Topology | Buck | |
| Peak Efficiency | 95 % | |
| Component count min. | 5 | |
| current limit adjustable | |
|
| Nr.of packages | 2 | |
| CSP | ||
| SC70 | ||
| SOT | ||
| MSOP | MSOP-8 | |
| QFN/DFN | QFN-16 | |
| SO/SOIC | ||
| SOP | ||
| DIP | ||
| TO | ||
| DDPAK |
AAT1151-2.5 Datasheet
Link to the most up-to-date AAT1151-2.5 datasheet and the product page for EVM, tools and support information.
AAT1151-2.5
AAT1151-2.5 Sample stock and distributor price breaks
AAT1151-2.5 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 AAT1151-2.5. Optional, compare AAT1151-2.5 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 AAT1151-2.5.
| Order Code | Spec | L (µH) | IR (A) | ISAT (A) | RDC (mΩ) | L x W x H (mm) |
| 744025004 | 4.7 | 1.4 | 1.7 | 100.00 | 2.8 x 2.8 x 3 | |
| 744025006 | 6.8 | 1.1 | 1.3 | 142.00 | 2.8 x 2.8 x 3 | |
| 744031004 | 4.7 | 1.2 | 0.9 | 90.00 | 3.8 x 3.8 x 1.8 | |
| 74404024047 | 4.7 | 1.1 | 1.2 | 175.00 | 2.5 x 2 x 1.2 | |
| 74404024068 | 6.8 | 0.9 | 1.0 | 300.00 | 2.5 x 2 x 1.2 | |
| 74404032047 | 4.7 | 1.3 | 1.2 | 96.00 | 3 x 3 x 1.5 | |
| 74404032068 | 6.8 | 1.2 | 0.9 | 120.00 | 3 x 3 x 1.5 | |
| 74404042068 | 6.8 | 1.5 | 1.8 | 98.00 | 4 x 4 x 1.8 | |
| 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 | |
| 744042006 | 6.8 | 1.5 | 1.3 | 80.00 | 4.8 x 4.8 x 2 | |
| 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 | |
| 744043006 | 6.8 | 1.3 | 1.3 | 80.00 | 4.8 x 4.8 x 3 | |
| 744045006 | 6.8 | 1.1 | 1.6 | 160.00 | 4.5 x 3.2 x 2.9 | |
| 744052005 | 5.0 | 1.7 | 1.8 | 50.00 | 5.8 x 5.8 x 2 | |
| 744052006 | 6.2 | 1.5 | 1.6 | 70.00 | 5.8 x 5.8 x 2 | |
| 744052007 | 7.5 | 1.4 | 1.5 | 70.00 | 5.8 x 5.8 x 2 | |
| 744053006 | 6.2 | 2.2 | 1.7 | 40.00 | 5.8 x 5.8 x 3 | |
| 744062006 | 6.2 | 1.9 | 1.8 | 40.00 | 6.8 x 6.8 x 2.5 | |
| 744062007 | 7.5 | 1.7 | 1.6 | 50.00 | 6.8 x 6.8 x 2.5 | |
| 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 | |
| 7440680068 | 6.8 | 1.4 | 1.2 | 127.00 | 8 x 8 x 1.2 | |
| 7440690047 | 4.7 | 2.2 | 1.8 | 56.00 | 8 x 8 x 1.5 | |
| 7440690068 | 6.8 | 1.8 | 1.7 | 88.00 | 8 x 8 x 1.5 | |
| 7440700068 | 6.8 | 2.4 | 1.8 | 56.00 | 8 x 8 x 2 | |
| 74438323047 | 4.7 | 0.9 | 1.8 | 338.00 | 2.5 x 2 x 1 | |
| 74438323068 | 6.8 | 0.9 | 1.6 | 563.00 | 2.5 x 2 x 1 | |
| 74438324056 | 5.6 | 1.0 | 1.8 | 405.00 | 2.5 x 2 x 1.2 | |
| 74438324068 | 6.8 | 0.9 | 1.6 | 560.00 | 2.5 x 2 x 1.2 | |
| 74479889247 | 4.7 | 0.9 | 0.9 | 400.00 | 2.5 x 2 x 1.2 | |
| 78438323047 | 4.7 | 0.9 | 1.8 | 338.00 | 2.5 x 2 x 1 | |
| 78438323068 | 6.8 | 0.9 | 1.6 | 563.00 | 2.5 x 2 x 1 |
