LT1170 Boost Converter Overview



LT1170 is a 40.00 V, 7.50 A switch current limit non-sync Boost Converter from . The input voltage from 3.00 V to 40.00 V  can be boosted into an output voltage ranging from 3.00 V to 40.00 V.

Features of the Boost Converter are fixed 100 kHz switching frequency, a typical inductor size of 50.0 µH and it offers a peak efficiency of  up to 85 %. The minimum external component count is 8 and LT1170 is available in 2 package option(s): TO220-5 DD-5 .

For LT1170 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.

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V-IN min. 3.00 V
V-IN max. 40.00 V
Current-Limit typ.? 7.50 A
V-OUT min. 3.00 V
V-OUT max. 40.00 V
VOUT adjustable
VOUT programmable no
sync/non-sync non-sync
Frequency typ. 100 kHz
Frequency adjustable fixed
Frequency selectable
Frequency adj. min.
Frequency adj. max.
extern clock sync. yes
Softstart yes
Softstart adjustable yes
Tracking no
PG/Power OK no
Frequency sync. min. 120 kHz
Frequency sync. max. 160 kHz
Down Mode no
Quiescent current max. 9000 µA
Operating min.
Operating max.
Junction min. -40 °C
Junction max. 125 °C
thermal shutdown typ.
Inductor size typ. 50.0 µH
Inductor suggested by Würth Elektronik
Automotive AEC-Q100 no
Light-Load-Mode no
Topology Boost
Peak Efficiency 85 %
Component count min. 8
current limit adjustable yes
Nr.of package options 2
TO TO220-5

LT1170 Datasheet

Link to the most up-to-date LT1170 datasheet and the product page for EVM, tools and support information.


LT1170 Price breaks and distributor sample stock

LT1170 prices and available online distributors.

Available Distributors with stock: 0

no online Distributor with LT1170 stock available

Available Distributors with stock: 0

no online Distributor with LT1170 stock available

Alternatives and equivalents

The following DC/DC Boost Converter are similar to LT1170. Optional, compare LT1170 side-by-side with other Boost Converter via the Comparison function.

Variation Compare Product Manufacturer Package
0% LT1170HV LT1170HV product overviewLT1170HV product overview Linear Technology TO220-5, DD-5
50% LT1171 LT1171 product overviewLT1171 product overview Linear Technology TO220-5, DD-5
50% LT1171HV LT1171HV product overviewLT1171HV product overview Linear Technology TO220-5, DD-5

Inductor suggestions

Below you can find matching inductors from Wuerth Elektronik calculated on the maximum parameters of LT1170.

V-IN min. 3 V, Current-Limit typ. 7.5 A, V-OUT max. 40 V, Frequency typ. 100 kHz
Order Code Spec L (µH) IR (A) ISAT (A) RDC (mΩ) L x W x H (mm)
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