LT3473 Boost Converter Overview

Description

Manufacturer
 
Category
Sub-Category

LT3473 is a 34.00 V, 1.50 A switch current limit sync Boost Converter from . The input voltage from 2.20 V to 16.00 V  can be boosted into an output voltage ranging from 2.20 V to 34.00 V.

Features of the Boost Converter are fixed 1200 kHz switching frequency, a typical inductor size of 6.8 µH and it offers a peak efficiency of  up to 78 %. The minimum external component count is 6 and LT3473 is available in 2 package option(s): DFN-8 .

For LT3473 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.

ParameterValueReplacement
Search Filter
V-IN min. 2.20 V
V-IN max. 16.00 V
Current-Limit typ.? 1.50 A
V-OUT min. 2.20 V
V-OUT max. 34.00 V
VOUT adjustable
VOUT programmable yes
sync/non-sync sync
Frequency typ. 1200 kHz
Frequency adjustable fixed
Frequency selectable
Frequency adj. min.
Frequency adj. max.
extern clock sync. no
Softstart yes
Softstart adjustable no
Tracking no
PG/Power OK yes
LBI/LBO no
Frequency sync. min.
Frequency sync. max.
Down Mode no
Quiescent current max. 100 µA
Operating min. -40 °C
Operating max. 85 °C
Junction min.
Junction max.
thermal shutdown typ. 145 °C
Inductor size typ. 6.8 µH
Inductor suggested by Würth Elektronik
Automotive AEC-Q100 no
Light-Load-Mode yes
Topology Boost
Peak Efficiency 78 %
Component count min. 6
current limit adjustable no
Nr.of package options 2
CSP
SC70
SOT
MSOP
QFN/DFN DFN-8
SO/SOIC
SOP
DIP
TO
DDPAK

LT3473 Datasheet

Link to the most up-to-date LT3473 datasheet and the product page for EVM, tools and support information.

LT3473

LT3473 Price breaks and distributor sample stock

LT3473 prices and available online distributors.

OEMSecrets.com
findchips.com

Available Distributors with stock: 5

Chip-One-Stop (2)

ProductStockPriceBuy
LT3473EDD#PBF116
13.34 USD
102.74 USD
502.27 USD
1002.25 USD
Buy Now
LT3473EDD#PBF1083
14.53 USD
103.81 USD
253.77 USD
503.59 USD
1003.51 USD
2003.35 USD
Buy Now

Element14 (1)

ProductStockPriceBuy
LT3473EDD#PBF415
16.27 USD
254.46 USD
1003.66 USD
Buy Now

FARNELL-ELEMENT14 (1)

ProductStockPriceBuy
LT3473EDD#PBF581Buy Now

NEWARK (1)

ProductStockPriceBuy
LT3473EDD#PBF23
13.92 USD
252.66 USD
1002.29 USD
Buy Now
LT3473EDD#TRPBF0
14.05 USD
25002.91 USD
Buy Now

RS-COMPONENTS (1)

ProductStockPriceBuy
LT3473EDD#PBF50Buy Now

Available Distributors without stock: 1

DIGI-KEY (0)

ProductStockPriceBuy
LT3473EDD#PBF0
13.92 USD
252.79 USD
1002.29 USD
Buy Now
LT3473EDD#TRPBF0
25002.39 USD
Buy Now
LT3473AEDE#PBF0
3642.41 USD
Buy Now
LT3473AEDE#TRPBF0
25002.51 USD
Buy Now

Available Distributors with stock: 0

no online Distributor with LT3473 stock available

Alternatives and equivalents

The following DC/DC Boost Converter are similar to LT3473. Optional, compare LT3473 side-by-side with other Boost Converter via the Comparison function.

Variation Compare Product Manufacturer Package
0% LT3473A LT3473A product overviewLT3473A product overview Linear Technology DFN-12

Inductor suggestions

Below you can find matching inductors from Wuerth Elektronik calculated on the maximum parameters of LT3473.

V-IN min. 2.2 V, Current-Limit typ. 1.5 A, V-OUT max. 34 V, Frequency typ. 1200 kHz
Order Code Spec L (µH) IR (A) ISAT (A) RDC (mΩ) L x W x H (mm)
744302015 0.2 30.0 32.0 0.24 6.95 x 6.8 x 4.7
744303015 0.2 31.0 42.0 0.33 10 x 6.8 x 5
744303022 0.2 31.0 32.0 0.33 10 x 6.8 x 5
744304016 0.2 26.0 32.0 0.17 11.5 x 11.8 x 4
744305022 0.2 28.0 42.0 0.16 13.5 x 13.3 x 5.2
744306020 0.2 26.0 36.0 0.30 10.5 x 10.3 x 5.5
744307016 0.2 29.0 41.0 0.33 7.4 x 7.2 x 7.2
744307022 0.2 29.0 29.0 0.33 7.4 x 7.2 x 7.2
744308015 0.2 27.0 58.0 0.37 10.1 x 7 x 7
744308020 0.2 27.0 48.0 0.37 10.1 x 7 x 7
7443081022 0.2 38.0 45.0 0.29 9.4 x 6.2 x 8.1
744325016 0.2 25.0 58.0 0.51 10.5 x 10.2 x 5
744373770022 0.2 25.0 40.0 0.75 13.5 x 12.6 x 3.5
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