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 | ![]() |
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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. | ![]() |
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Softstart | ![]() |
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Softstart adjustable | ![]() |
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Tracking | ![]() |
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PG/Power OK | ![]() |
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LBI/LBO | ![]() |
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Frequency sync. min. | 100 kHz | |
Frequency sync. max. | 1000 kHz | |
Down Mode | ![]() |
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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 | ![]() |
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Light-Load-Mode | ![]() |
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Topology | Boost | |
Peak Efficiency | 95 % | |
Component count min. | 13 | |
current limit adjustable | ![]() |
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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: 5
Chip One Stop (2)
Digi-Key (2)
Element14 (1)
Farnell Element14 (1)
RS Components (3)
Available Distributors without stock: 1
Newark Electronics (0)
Available Distributors with stock: 7
Arrow Electronics
Digi-Key
Product | Stock | Price | Buy | ||||||
LT3958EUHE#PBF | 1552 |
| Buy Now | ||||||
LT3958IUHE#PBF | 696 |
| Buy Now | ||||||
LT3958EUHE#TRPBF | 0 |
| Buy Now | ||||||
LT3958EUHE#TRPBF | 0 | Buy Now | |||||||
LT3958EUHE#TRPBF | 0 | Buy Now | |||||||
LT3958IUHE#TRPBF | 0 |
| Buy Now |
Quest Components
element14 Asia-Pacific
Farnell element14
Chip1Stop
RS Components
Available Distributors without stock: 1
Newark element14
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 | ![]() |
Linear Technology | QFN-20, TSSOP-20 | |
50% | LT3580 | ![]() |
Linear Technology | MSOP-8, DFN-8 | |
50% | LT3581 | ![]() |
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) |