RT7237B Buck Converter overview
Description
RT7237B is a 18.00 V sync Buck Converter from with 2.00 A output current. The maximum 18.00 V input voltage can be regulated down into a 0.80 V to 12.00 V output voltage.
It requires are a typical inductor size of 3.60 µH, a typical external component count of 10 and achieves a peak efficiency of 95 %. Further RT7237B characteristics are a fixed 1200 kHz switching frequency and 1 available package option(s): PSOP-8 .
Parameter overview and features with replacement search
For the RT7237B 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. | 4.50 V | |
| V-IN max. | 18.00 V | |
| I-OUT? | 2.00 A | |
| V-OUT min. | 0.80 V | |
| V-OUT max. | 12.00 V | |
| V-OUT | adjustable V | |
| V-OUT programmable |  |
|
| sync/non-sync | sync | |
| Frequency typ. | 1200 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. | 1200 µA | |
| Operating min. | -40 °C | |
| Operating max. | 85 °C | |
| Junction min. | -40 °C | |
| Junction max. | 125 °C | |
| thermal shutdown typ. | 150 °C | |
| Inductor size typ. | 3.60 µH | |
| Inductor suggested by Würth Elektronik | ||
| Automotive AEC-Q100 | |
|
| Light-Load-Mode | |
|
| Topology | Buck | |
| Peak Efficiency | 95 % | |
| Component count min. | 10 | |
| current limit adjustable | |
|
| Nr.of packages | 1 | |
| CSP | ||
| SC70 | ||
| SOT | ||
| MSOP | ||
| QFN/DFN | ||
| SO/SOIC | ||
| SOP | PSOP-8 | |
| DIP | ||
| TO | ||
| DDPAK |
RT7237B Datasheet
Link to the most up-to-date RT7237B datasheet and the product page for EVM, tools and support information.
RT7237B Sample stock and distributor price breaks
RT7237B 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 RT7237B. Optional, compare RT7237B 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 RT7237B.
| 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 | |
| 74404024010 | 1.0 | 2.2 | 2.6 | 37.00 | 2.5 x 2 x 1.2 | |
| 74404032010 | 1.0 | 2.2 | 3.0 | 33.00 | 3 x 3 x 1.5 | |
| 74404041010 | 1.0 | 2.5 | 3.4 | 41.00 | 4 x 4 x 1.2 | |
| 74404042010 | 1.0 | 3.2 | 4.8 | 27.00 | 4 x 4 x 1.8 | |
| 744042001 | 1.0 | 2.7 | 2.6 | 20.00 | 4.8 x 4.8 x 2 | |
| 74404300082 | 0.8 | 3.5 | 3.7 | 14.00 | 4.8 x 4.8 x 3 | |
| 7440430012 | 1.2 | 3.1 | 2.8 | 15.00 | 4.8 x 4.8 x 3 | |
| 7440520012 | 1.2 | 3.0 | 3.5 | 20.00 | 5.8 x 5.8 x 2 | |
| 744062001 | 1.0 | 4.8 | 4.6 | 10.00 | 6.8 x 6.8 x 2.5 | |
| 7440680010 | 1.0 | 2.8 | 3.3 | 32.00 | 8 x 8 x 1.2 | |
| 7440690010 | 1.0 | 3.6 | 3.8 | 21.00 | 8 x 8 x 1.5 | |
| 7440700012 | 1.2 | 4.8 | 4.2 | 12.50 | 8 x 8 x 2 | |
| 744383230082 | 0.8 | 2.6 | 4.3 | 53.00 | 2.5 x 2 x 1 | |
| 74438323010 | 1.0 | 2.5 | 4.0 | 63.00 | 2.5 x 2 x 1 | |
| 74438324010 | 1.0 | 2.8 | 4.9 | 49.00 | 2.5 x 2 x 1.2 | |
| 74438324012 | 1.2 | 2.4 | 4.5 | 67.00 | 2.5 x 2 x 1.2 | |
| 74438335010 | 1.0 | 2.7 | 4.5 | 39.00 | 3 x 3 x 1.5 | |
| 74438336010 | 1.0 | 4.0 | 5.0 | 26.00 | 3 x 3 x 2 | |
| 74438336012 | 1.2 | 3.9 | 4.8 | 30.00 | 3 x 3 x 2 | |
| 7447785001 | 1.0 | 3.5 | 4.5 | 31.00 | 5.9 x 6.2 x 3.3 | |
| 74479276210 | 1.0 | 2.0 | 2.5 | 65.00 | 2 x 1.6 x 1 | |
| 74479276210C | 1.0 | 2.1 | 3.1 | 53.00 | 2 x 1.25 x 1 | |
| 74479287210 | 1.0 | 2.4 | 4.0 | 55.00 | 2.5 x 2 x 1 | |
| 74479288210 | 1.0 | 2.4 | 4.2 | 40.00 | 2.5 x 2 x 1.2 | |
| 74479298210 | 1.0 | 2.5 | 4.0 | 45.00 | 3.2 x 2.5 x 1 | |
| 74479899210 | 1.0 | 2.3 | 2.5 | 50.00 | 3.2 x 2.6 x 1.2 | |
| 784383230082 | 0.8 | 2.6 | 4.3 | 53.00 | 2.5 x 2 x 1 | |
| 78438323010 | 1.0 | 2.5 | 4.0 | 63.00 | 2.5 x 2 x 1 | |
| 78438335010 | 1.0 | 2.7 | 4.5 | 39.00 | 3 x 3 x 1.5 |
