CS5173 Boost Converter Overview



CS5173 is a 39.00 V, 1.90 A switch current limit non-sync Boost Converter from . The input voltage from 2.70 V to 30.00 V  can be boosted into an output voltage ranging from 3.00 V to 39.00 V.

Features of the Boost Converter are fixed 560 kHz switching frequency, a typical inductor size of 22.0 µH and it offers a peak efficiency of  up to 90 %. The minimum external component count is 8 and CS5173 is available in 1 package option(s): SOIC-8 .

For CS5173 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.

Search Filter
V-IN min. 2.70 V
V-IN max. 30.00 V
Current-Limit typ.? 1.90 A
V-OUT min. 3.00 V
V-OUT max. 39.00 V
VOUT adjustable
VOUT programmable no
sync/non-sync non-sync
Frequency typ. 560 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. 640 kHz
Frequency sync. max. 1000 kHz
Down Mode no
Quiescent current max. 8000 µA
Operating min.
Operating max.
Junction min. -40 °C
Junction max. 125 °C
thermal shutdown typ. 180 °C
Inductor size typ. 22.0 µH
Inductor suggested by Würth Elektronik
Automotive AEC-Q100 yes
Light-Load-Mode no
Topology Boost
Peak Efficiency 90 %
Component count min. 8
current limit adjustable no
Nr.of package options 1

CS5173 Datasheet

Link to the most up-to-date CS5173 datasheet and the product page for EVM, tools and support information.


CS5173 Price breaks and distributor sample stock

CS5173 prices and available online distributors.


Available Distributors with stock: 0

no online Distributor with CS5173 stock available

Available Distributors with stock: 0

no online Distributor with CS5173 stock available

Alternatives and equivalents

The following DC/DC Boost Converter are similar to CS5173. Optional, compare CS5173 side-by-side with other Boost Converter via the Comparison function.

Variation Compare Product Manufacturer Package
0% CS5171 CS5171 product overviewCS5171 product overview ON Semiconductor SOIC-8
25% NCV5171 NCV5171 product overviewNCV5171 product overview ON Semiconductor SOIC-8
25% NCV5173 NCV5173 product overviewNCV5173 product overview ON Semiconductor SOIC-8

Inductor suggestions

Below you can find matching inductors from Wuerth Elektronik calculated on the maximum parameters of CS5173.

V-IN min. 2.7 V, Current-Limit typ. 1.9 A, V-OUT max. 39 V, Frequency typ. 560 kHz
Order Code Spec L (µH) IR (A) ISAT (A) RDC (mΩ) L x W x H (mm)
744301033 0.3 40.0 46.0 0.32 11.3 x 11 x 9.4
744301047 0.5 40.0 35.0 0.32 11.3 x 11 x 9.4
7443081030 0.3 38.0 32.0 0.29 9.4 x 6.2 x 8.1
744309033 0.3 47.5 62.5 0.17 14 x 13 x 9.5
744309047 0.5 47.5 40.5 0.17 14 x 13 x 9.5
744355147 0.5 30.0 50.0 0.64 13.2 x 12.8 x 6.5
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