LT3489 Boost Converter Overview

Description

Manufacturer
 
Category
Sub-Category

LT3489 is a 40.00 V, 3.50 A switch current limit non-sync Boost Converter from . The input voltage from 2.40 V to 16.00 V  can be boosted into an output voltage ranging from 2.60 V to 40.00 V.

Features of the Boost Converter are fixed 2000 kHz switching frequency, a typical inductor size of 2.2 µH and it offers a peak efficiency of  up to 84 %. The minimum external component count is 15 and LT3489 is available in 1 package option(s): MSOP-8E .

For LT3489 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. 2.40 V
V-IN max. 16.00 V
Current-Limit typ.? 3.50 A
V-OUT min. 2.60 V
V-OUT max. 40.00 V
VOUT adjustable
VOUT programmable no
sync/non-sync non-sync
Frequency typ. 2000 kHz
Frequency adjustable fixed
Frequency selectable
Frequency adj. min.
Frequency adj. max.
extern clock sync. no
Softstart yes
Softstart adjustable yes
Tracking no
PG/Power OK no
LBI/LBO no
Frequency sync. min.
Frequency sync. max.
Down Mode no
Quiescent current max. 4000 µA
Operating min. -40 °C
Operating max. 85 °C
Junction min.
Junction max.
thermal shutdown typ.
Inductor size typ. 2.2 µH
Inductor suggested by Würth Elektronik
Automotive AEC-Q100 no
Light-Load-Mode no
Topology Boost
Peak Efficiency 84 %
Component count min. 15
current limit adjustable no
Nr.of package options 1
CSP
SC70
SOT
MSOP MSOP-8E
QFN/DFN
SO/SOIC
SOP
DIP
TO
DDPAK

LT3489 Datasheet

Link to the most up-to-date LT3489 datasheet and the product page for EVM, tools and support information.

LT3489

LT3489 Price breaks and distributor sample stock

LT3489 prices and available online distributors.

OEMSecrets.com
findchips.com

Available Distributors with stock: 5

Chip One Stop (3)

ProductStockPriceBuy
LT3489EMS8E#PBF31
14.07 USD
103.00 USD
Buy Now
LT3489EMS8E#PBF403
12.94 USD
1002.43 USD
Buy Now
LT3489EMS8E#PBF403
12.94 USD
1002.43 USD
Buy Now

Digi-Key (2)

ProductStockPriceBuy
LT3489EMS8E#PBF780
13.92 USD
252.79 USD
1002.29 USD
Buy Now
DC925A2
1100.50 USD
Buy Now
LT3489EMS8E#TRPBF0
25002.39 USD
Buy Now

Element14 (1)

ProductStockPriceBuy
LT3489EMS8E#PBF322
16.04 USD
254.30 USD
1003.53 USD
Buy Now

Farnell Element14 (1)

ProductStockPriceBuy
LT3489EMS8E#PBF332Buy Now

Newark Electronics (1)

ProductStockPriceBuy
LT3489EMS8E#PBF9
12.29 USD
252.29 USD
1002.29 USD
Buy Now
LT3489EMS8E#TRPBF0
14.05 USD
25002.91 USD
Buy Now

Available Distributors with stock: 6

Arrow Electronics

ProductStockPriceBuy
LT3489EMS8E#PBF 860
12.79 $
1002.29 $
Buy Now
LT3489EMS8E#PBF 403
12.79 $
1002.29 $
Buy Now
LT3489EMS8E#TRPBF 0
25002.34 $
Buy Now
show stock=0hide stock=0

Digi-Key

ProductStockPriceBuy
LT3489EMS8E#PBF 780
1001.94 €
252.37 €
13.33 €
Buy Now
DC925A 2
185.27 €
Buy Now
LT3489EMS8E#TRPBF 0
25002.03 €
Buy Now
show stock=0hide stock=0

Newark element14

ProductStockPriceBuy
LT3489EMS8E#TRPBF 0
14.05 $
25002.91 $
Buy Now
LT3489EMS8E#PBF 9
12.29 $
252.29 $
1002.29 $
Buy Now
show stock=0hide stock=0

element14 Asia-Pacific

ProductStockPriceBuy
LT3489EMS8E#PBF 322
14.83 $
253.44 $
1002.82 $
Buy Now

Farnell element14

ProductStockPriceBuy
LT3489EMS8E#PBF 332
13.34 GBP
252.12 GBP
1001.87 GBP
Buy Now

Chip1Stop

ProductStockPriceBuy
LT3489EMS8E#PBF 403
12.94 $
1002.43 $
Buy Now
LT3489EMS8E#PBF 31
14.07 $
103.00 $
Buy Now

Alternatives and equivalents

The following DC/DC Boost Converter are similar to LT3489. Optional, compare LT3489 side-by-side with other Boost Converter via the Comparison function.

Variation Compare Product Manufacturer Package
10% LT1935 LT1935 product overviewLT1935 product overview Linear Technology TSOT23-5
25% LT1171 LT1171 product overviewLT1171 product overview Linear Technology TO220-5, DD-5
25% LT1171HV LT1171HV product overviewLT1171HV product overview Linear Technology TO220-5, DD-5
25% LT1946A LT1946A product overviewLT1946A product overview Linear Technology MSOP-8
50% LT1172 LT1172 product overviewLT1172 product overview Linear Technology SO-8, DIP-8, TO220-5, DD-5
50% LT1172HV LT1172HV product overviewLT1172HV product overview Linear Technology SO-8, DIP-8, TO220-5, DD-5
50% LT1946 LT1946 product overviewLT1946 product overview Linear Technology MSOP-8
50% LT3467A LT3467A product overviewLT3467A product overview Linear Technology SOT23-6, DFN-6
50% CS5171 CS5171 product overviewCS5171 product overview ON Semiconductor SOIC-8
50% CS5173 CS5173 product overviewCS5173 product overview ON Semiconductor SOIC-8
50% NCV5171 NCV5171 product overviewNCV5171 product overview ON Semiconductor SOIC-8
50% NCV5173 NCV5173 product overviewNCV5173 product overview ON Semiconductor SOIC-8
50% SC4503 SC4503 product overviewSC4503 product overview Semtech TSOT23-5, MLPD-8

Inductor suggestions

Below you can find matching inductors from Wuerth Elektronik calculated on the maximum parameters of LT3489.

V-IN min. 2.4 V, Current-Limit typ. 3.5 A, V-OUT max. 40 V, Frequency typ. 2000 kHz
Order Code Spec L (µH) IR (A) ISAT (A) RDC (mΩ) L x W x H (mm)
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