LT3958 Boost Converter Overview
Description
LT3958 is a 80.00 V, 4.00 A switch current limit non-sync Boost Converter from . The input voltage from 5.00 V to 80.00 V can be boosted into an output voltage ranging from 5.00 V to 80.00 V.
Features of the Boost Converter are adjustable 1000 kHz switching frequency, a typical inductor size of 33.0 µH and it offers a peak efficiency of up to 95 %. The minimum external component count is 13 and LT3958 is available in 1 package option(s): QFN-36 .
Feature and parameter overview with replacement search
For LT3958 replacement search, 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. | 5.00 V | |
| V-IN max. | 80.00 V | |
| Current-Limit typ.? | 4.00 A | |
| V-OUT min. | 5.00 V | |
| V-OUT max. | 80.00 V | |
| VOUT | adjustable | |
| VOUT programmable |  |
|
| sync/non-sync | non-sync | |
| Frequency typ. | 1000 kHz | |
| Frequency adjustable | adjustable | |
| Frequency selectable | ||
| Frequency adj. min. | 100 kHz | |
| Frequency adj. max. | 1000 kHz | |
| extern clock sync. |  |
|
| Softstart | |
|
| Softstart adjustable | |
|
| Tracking | |
|
| PG/Power OK | |
|
| LBI/LBO | |
|
| Frequency sync. min. | 100 kHz | |
| Frequency sync. max. | 1000 kHz | |
| Down Mode | |
|
| Quiescent current max. | 2200 µA | |
| Operating min. | ||
| Operating max. | ||
| Junction min. | -40 °C | |
| Junction max. | 125 °C | |
| thermal shutdown typ. | 165 °C | |
| Inductor size typ. | 33.0 µH | |
| Inductor suggested by Würth Elektronik | ||
| Automotive AEC-Q100 | |
|
| Light-Load-Mode | |
|
| Topology | Boost | |
| Peak Efficiency | 95 % | |
| Component count min. | 13 | |
| current limit adjustable | |
|
| Nr.of package options | 1 | |
| CSP | ||
| SC70 | ||
| SOT | ||
| MSOP | ||
| QFN/DFN | QFN-36 | |
| SO/SOIC | ||
| SOP | ||
| DIP | ||
| TO | ||
| DDPAK |
LT3958 Datasheet
Link to the most up-to-date LT3958 datasheet and the product page for EVM, tools and support information.
LT3958 Price breaks and distributor sample stock
LT3958 prices and available online distributors.
Available Distributors with stock: 6
ARROW-NAC (2)
Chip-One-Stop (3)
DIGI-KEY (2)
Element14 (1)
FARNELL-ELEMENT14 (1)
RS-COMPONENTS (3)
Available Distributors without stock: 1
NEWARK (0)
Available Distributors with stock: 0
Alternatives and equivalents
The following DC/DC Boost Converter are similar to LT3958. Optional, compare LT3958 side-by-side with other Boost Converter via the Comparison function.
| Variation | Compare | Product | Manufacturer | Package | |
| 50% | LT3579 |  LT3579 product overview |
Linear Technology | QFN-20, TSSOP-20 | |
| 50% | LT3580 | LT3580 product overview |
Linear Technology | MSOP-8, DFN-8 | |
| 50% | LT3581 | LT3581 product overview |
Linear Technology | MSOP-16, DFN-14 |
Inductor suggestions
Below you can find matching inductors from Wuerth Elektronik calculated on the maximum parameters of LT3958.
| Order Code | Spec | L (µH) | IR (A) | ISAT (A) | RDC (mΩ) | L x W x H (mm) |
