RT6239B Buck Converter overview
Description
RT6239B is a 18.00 V sync Buck Converter from with 9.00 A output current. The maximum 18.00 V input voltage can be regulated down into a 0.70 V to 8.00 V output voltage.
It requires are a typical inductor size of 1.00 µH, a typical external component count of 10 and achieves a peak efficiency of 95 %. Further RT6239B characteristics are a fixed 500 kHz switching frequency and 1 available package option(s): UQFN-14 .
Parameter overview and features with replacement search
For the RT6239B 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? | 9.00 A | |
| V-OUT min. | 0.70 V | |
| V-OUT max. | 8.00 V | |
| V-OUT | adjustable V | |
| V-OUT programmable |  |
|
| sync/non-sync | sync | |
| Frequency typ. | 500 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. | 900 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. | 1.00 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 | UQFN-14 | |
| SO/SOIC | ||
| SOP | ||
| DIP | ||
| TO | ||
| DDPAK |
RT6239B Datasheet
Link to the most up-to-date RT6239B datasheet and the product page for EVM, tools and support information.
RT6239B Sample stock and distributor price breaks
RT6239B 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 RT6239B. Optional, compare RT6239B 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 RT6239B.
| Order Code | Spec | L (µH) | IR (A) | ISAT (A) | RDC (mΩ) | L x W x H (mm) |
| 744305040 | 0.4 | 28.0 | 20.0 | 0.16 | 13.5 x 13.3 x 5.2 | |
| 744308040 | 0.4 | 25.0 | 26.0 | 0.37 | 10.1 x 7 x 7 | |
| 7443081040 | 0.4 | 38.0 | 21.0 | 0.29 | 9.4 x 6.2 x 8.1 | |
| 744310055 | 0.5 | 14.0 | 20.0 | 3.70 | 7 x 6.9 x 3.3 | |
| 744311047 | 0.4 | 19.0 | 25.0 | 1.85 | 7 x 6.9 x 4 | |
| 744311068 | 0.7 | 17.0 | 20.0 | 3.10 | 7 x 6.9 x 4 | |
| 744314047 | 0.5 | 18.0 | 20.0 | 1.35 | 7 x 6.9 x 5 | |
| 744316047 | 0.5 | 15.0 | 16.0 | 2.75 | 5.5 x 5.3 x 4.3 | |
| 744316068 | 0.7 | 12.8 | 13.5 | 4.00 | 5.5 x 5.3 x 4.3 | |
| 744323068 | 0.7 | 14.0 | 21.0 | 4.79 | 10.6 x 10.6 x 3.1 | |
| 7443340068 | 0.7 | 19.0 | 23.5 | 2.65 | 8.4 x 7.9 x 7.5 | |
| 744373460068 | 0.7 | 11.0 | 25.0 | 4.80 | 7.3 x 6.6 x 3 | |
| 744373490068 | 0.7 | 12.0 | 26.0 | 4.00 | 7.3 x 6.6 x 5 | |
| 744373770068 | 0.7 | 17.5 | 27.0 | 1.80 | 13.5 x 12.6 x 3.5 | |
| 74477009 | 0.5 | 23.5 | 26.4 | 2.90 | 12 x 12 x 8 | |
| 7447715906 | 0.6 | 9.5 | 19.0 | 4.50 | 12 x 12 x 4.5 | |
| 7447797050 | 0.5 | 13.2 | 23.0 | 4.30 | 10.2 x 10.2 x 4.5 | |
| 7447798050 | 0.5 | 18.5 | 18.0 | 2.20 | 10.2 x 10.2 x 6.4 |
