LT8331 Boost Converter Overview
Description
LT8331 is a 140.00 V, 0.60 A switch current limit non-sync Boost Converter from . The input voltage from 4.50 V to 100.00 V can be boosted into an output voltage ranging from 4.00 V to 140.00 V.
Features of the Boost Converter are adjustable 500 kHz switching frequency, a typical inductor size of 100.0 µH and it offers a peak efficiency of up to 90 %. The minimum external component count is 11 and LT8331 is available in 1 package option(s): MSOP-12 .
Feature and parameter overview with replacement search
For LT8331 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. | 4.50 V | |
V-IN max. | 100.00 V | |
Current-Limit typ.? | 0.60 A | |
V-OUT min. | 4.00 V | |
V-OUT max. | 140.00 V | |
VOUT | adjustable | |
VOUT programmable | ![]() |
|
sync/non-sync | non-sync | |
Frequency typ. | 500 kHz | |
Frequency adjustable | adjustable | |
Frequency selectable | ||
Frequency adj. min. | 100 kHz | |
Frequency adj. max. | 500 kHz | |
extern clock sync. | ![]() |
|
Softstart | ![]() |
|
Softstart adjustable | ![]() |
|
Tracking | ![]() |
|
PG/Power OK | ![]() |
|
LBI/LBO | ![]() |
|
Frequency sync. min. | 100 kHz | |
Frequency sync. max. | 500 kHz | |
Down Mode | ![]() |
|
Quiescent current max. | 1700 µA | |
Operating min. | ||
Operating max. | ||
Junction min. | -40 °C | |
Junction max. | 125 °C | |
thermal shutdown typ. | 170 °C | |
Inductor size typ. | 100.0 µH | |
Inductor suggested by Würth Elektronik | ||
Automotive AEC-Q100 | ![]() |
|
Light-Load-Mode | ![]() |
|
Topology | Boost | |
Peak Efficiency | 90 % | |
Component count min. | 11 | |
current limit adjustable | ![]() |
|
Nr.of package options | 1 | |
CSP | ||
SC70 | ||
SOT | ||
MSOP | MSOP-12 | |
QFN/DFN | ||
SO/SOIC | ||
SOP | ||
DIP | ||
TO | ||
DDPAK |
LT8331 Datasheet
Link to the most up-to-date LT8331 datasheet and the product page for EVM, tools and support information.
LT8331 Price breaks and distributor sample stock
LT8331 prices and available online distributors.


Available Distributors with stock: 2
Digi-Key (3)
Product | Stock | Price | Buy | ||||||||
LT8331IMSE#PBF | 123 |
| Buy Now | ||||||||
LT8331IMSE#TRPBF | 0 |
| Buy Now | ||||||||
LT8331IMSE#TRPBF | 2485 |
| Buy Now | ||||||||
LT8331IMSE#TRPBF | 2485 |
| Buy Now | ||||||||
LT8331EMSE#PBF | 0 |
| Buy Now | ||||||||
LT8331EMSE#TRPBF | 0 |
| Buy Now |
Available Distributors without stock: 3
Farnell Element14 (0)
Newark Electronics (0)
Rutronik (0)
Available Distributors with stock: 2
Digi-Key
Product | Stock | Price | Buy | ||||||||
LT8331IMSE#TRPBF | 2485 |
| Buy Now | ||||||||
LT8331IMSE#TRPBF | 2485 |
| Buy Now | ||||||||
LT8331IMSE#PBF | 123 |
| Buy Now | ||||||||
LT8331IMSE#TRPBF | 0 |
| Buy Now | ||||||||
LT8331EMSE#PBF | 0 |
| Buy Now | ||||||||
LT8331EMSE#TRPBF | 0 |
| Buy Now |
Mouser Electronics
Product | Stock | Price | Buy | ||||||||
LT8331IMSE#PBF | 27 |
| Buy Now | ||||||||
LT8331EMSE#PBF | 0 |
| Buy Now | ||||||||
LT8331EMSE#TRPBF | 0 |
| Buy Now | ||||||||
LT8331IMSE#TRPBF | 0 |
| Buy Now |
Available Distributors without stock: 1
Arrow Electronics
Alternatives and equivalents
The following DC/DC Boost Converter are similar to LT8331. Optional, compare LT8331 side-by-side with other Boost Converter via the Comparison function.
Variation | Compare | Product | Manufacturer | Package | |
50% | LM5002 | ![]() |
Texas Instruments | WSON-8, SOIC-8 |
Inductor suggestions
Below you can find matching inductors from Wuerth Elektronik calculated on the maximum parameters of LT8331.
Order Code | Spec | L (µH) | IR (A) | ISAT (A) | RDC (mΩ) | L x W x H (mm) |
744325120 | 1.2 | 20.0 | 25.0 | 1.80 | 10.5 x 10.2 x 5 | |
7443320082 | 0.8 | 24.0 | 36.0 | 1.85 | 12.1 x 11.4 x 10 | |
7443320100 | 1.0 | 24.0 | 32.0 | 1.85 | 12.1 x 11.4 x 10 | |
7443320150 | 1.5 | 19.5 | 27.0 | 2.95 | 12.1 x 11.4 x 10 | |
7443330082 | 0.8 | 20.0 | 36.0 | 2.15 | 10.9 x 10 x 9.7 | |
7443330100 | 1.0 | 20.0 | 27.5 | 2.15 | 10.9 x 10 x 9.7 | |
7443550140 | 1.4 | 22.0 | 26.0 | 2.40 | 13 x 12.8 x 5 | |
744355090 | 0.9 | 24.0 | 28.0 | 1.62 | 13 x 12.8 x 5 | |
7443551130 | 1.3 | 25.0 | 25.0 | 1.70 | 13.2 x 12.8 x 6.5 | |
744355182 | 0.8 | 27.0 | 35.0 | 1.04 | 13 x 12.8 x 6.5 |