LT3437 Buck Converter overview
Description
LT3437 is a 60.00 V non-sync Buck Converter from with 0.40 A output current. The maximum 60.00 V input voltage can be regulated down into a 1.25 V to 30.00 V output voltage.
It requires are a typical inductor size of 100.00 µH, a typical external component count of 13 and achieves a peak efficiency of 80 %. Further LT3437 characteristics are a fixed 200 kHz switching frequency and 2 available package option(s): DFN-10 TSSOP-16 .
Parameter overview and features with replacement search
For the LT3437 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. | 3.30 V | |
| V-IN max. | 60.00 V | |
| I-OUT? | 0.40 A | |
| V-OUT min. | 1.25 V | |
| V-OUT max. | 30.00 V | |
| V-OUT | adjustable V | |
| V-OUT programmable |  |
|
| sync/non-sync | non-sync | |
| Frequency typ. | 200 kHz | |
| Frequency | fixed | |
| Frequency selectable | ||
| ext.clock sync. |  |
|
| Frequency adj./ ext.clock min. | 240 kHz | |
| Frequency adj./ ext.clock max | 700 kHz | |
| Softstart | |
|
| Softstart adjustable | |
|
| Tracking | |
|
| PG/Power OK | |
|
| Quiescent current max. | 1000 µA | |
| Operating min. | -40 °C | |
| Operating max. | 140 °C | |
| Junction min. | ||
| Junction max. | ||
| thermal shutdown typ. | ||
| Inductor size typ. | 100.00 µH | |
| Inductor suggested by Würth Elektronik | ||
| Automotive AEC-Q100 | |
|
| Light-Load-Mode | |
|
| Topology | Buck | |
| Peak Efficiency | 80 % | |
| Component count min. | 13 | |
| current limit adjustable | |
|
| Nr.of packages | 2 | |
| CSP | ||
| SC70 | ||
| SOT | ||
| MSOP | ||
| QFN/DFN | DFN-10 | |
| SO/SOIC | ||
| SOP | TSSOP-16 | |
| DIP | ||
| TO | ||
| DDPAK |
LT3437 Datasheet
Link to the most up-to-date LT3437 datasheet and the product page for EVM, tools and support information.
LT3437 Sample stock and distributor price breaks
LT3437 prices and online available distributors.
Available Distributors with stock: 6
ARROW-NAC (5)
Chip-One-Stop (7)
| Product | Stock | Price | Buy | ||||||||||||
| LT3437EDD#PBF | 1613 |
| Buy Now | ||||||||||||
| LT3437EFE#PBF | 1193 |
| Buy Now | ||||||||||||
| LT3437HFE#PBF | 460 |
| Buy Now | ||||||||||||
| LT3437HFE#PBF | 460 |
| Buy Now | ||||||||||||
| LT3437IDD#PBF | 1209 |
| Buy Now | ||||||||||||
| LT3437IDD#TRPBF | 20000 |
| Buy Now | ||||||||||||
| LT3437IFE#PBF | 1063 |
| Buy Now |
DIGI-KEY (4)
Element14 (3)
FARNELL-ELEMENT14 (3)
RS-COMPONENTS (4)
Available Distributors without stock: 1
NEWARK (0)
Available Distributors with stock: 0
List of equivalents and alternatives
The following DC/DC Buck Converter are similar to LT3437. Optional, compare LT3437 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 LT3437.
| Order Code | Spec | L (µH) | IR (A) | ISAT (A) | RDC (mΩ) | L x W x H (mm) |
| 74404041470 | 47.0 | 0.6 | 0.6 | 987.00 | 4 x 4 x 1.2 | |
| 74404042470 | 47.0 | 0.6 | 0.7 | 620.00 | 4 x 4 x 1.8 | |
| 74404052470 | 47.0 | 0.8 | 1.0 | 521.00 | 5 x 5 x 2 | |
| 744043390 | 39.0 | 0.8 | 0.5 | 215.00 | 4.8 x 4.8 x 3 | |
| 744043470 | 47.0 | 0.8 | 0.5 | 250.00 | 4.8 x 4.8 x 3 | |
| 744052470 | 47.0 | 0.8 | 0.7 | 530.00 | 5.8 x 5.8 x 2 | |
| 744053470 | 47.0 | 0.8 | 0.7 | 220.00 | 5.8 x 5.8 x 3 | |
| 744062470 | 47.0 | 0.7 | 0.6 | 260.00 | 6.8 x 6.8 x 2.5 | |
| 74408941470 | 47.0 | 0.4 | 0.8 | 1,133.00 | 4.8 x 4.8 x 2.1 | |
| 74408942470 | 47.0 | 0.7 | 1.0 | 515.00 | 4.8 x 4.8 x 3.1 | |
| 74408942560 | 56.0 | 0.5 | 0.8 | 780.00 | 4.8 x 4.8 x 3.1 | |
| 74408943560 | 56.0 | 0.7 | 0.9 | 418.00 | 4.8 x 4.8 x 4.1 | |
| 744773139 | 39.0 | 0.8 | 0.9 | 418.00 | 4 x 4.5 x 3.5 | |
| 744773147 | 47.0 | 0.7 | 0.8 | 523.00 | 4 x 4.5 x 3.5 | |
| 744773156 | 56.0 | 0.6 | 0.8 | 714.00 | 4 x 4.5 x 3.5 | |
| 744778147 | 47.0 | 0.9 | 1.0 | 315.00 | 7.3 x 7.3 x 3.4 | |
| 744778156 | 56.0 | 0.8 | 0.9 | 322.00 | 7.3 x 7.3 x 3.4 | |
| 7447785147 | 47.0 | 0.9 | 0.7 | 500.00 | 5.9 x 6.2 x 3.3 | |
| 7447786147 | 47.0 | 1.4 | 0.8 | 260.00 | 5.9 x 6.2 x 5.1 | |
| 7447789147 | 47.0 | 0.9 | 1.0 | 315.00 | 7.3 x 7.3 x 3.5 | |
| 7447789156 | 56.0 | 0.8 | 0.9 | 335.00 | 7.3 x 7.3 x 3.5 | |
| 784773139 | 39.0 | 0.8 | 0.9 | 418.00 | 4 x 4.5 x 3.5 | |
| 784773147 | 47.0 | 0.7 | 0.8 | 523.00 | 4 x 4.5 x 3.5 | |
| 784773156 | 56.0 | 0.6 | 0.8 | 714.00 | 4 x 4.5 x 3.5 | |
| 784774147 | 47.0 | 0.9 | 1.0 | 260.00 | 5.2 x 5.8 x 4.85 | |
| 784774156 | 56.0 | 0.8 | 0.9 | 298.00 | 5.2 x 5.8 x 4.85 |
