LT3579 Boost Converter Overview

Description

Manufacturer
 
Category
Sub-Category

LT3579 is a 40.00 V, 4.20 A switch current limit non-sync Boost Converter from . The input voltage from 2.30 V to 16.00 V  can be boosted into an output voltage ranging from 3.50 V to 40.00 V.

Features of the Boost Converter are adjustable 2500 kHz switching frequency, a typical inductor size of 2.2 µH and it offers a peak efficiency of  up to 90 %. The minimum external component count is 15 and LT3579 is available in 2 package option(s): QFN-20 TSSOP-20 .

For LT3579 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. 2.30 V
V-IN max. 16.00 V
Current-Limit typ.? 4.20 A
V-OUT min. 3.50 V
V-OUT max. 40.00 V
VOUT adjustable
VOUT programmable no
sync/non-sync non-sync
Frequency typ. 2500 kHz
Frequency adjustable adjustable
Frequency selectable
Frequency adj. min. 200 kHz
Frequency adj. max. 2500 kHz
extern clock sync. yes
Softstart yes
Softstart adjustable yes
Tracking no
PG/Power OK no
LBI/LBO no
Frequency sync. min. 200 kHz
Frequency sync. max. 2500 kHz
Down Mode no
Quiescent current max. 2400 µA
Operating min.
Operating max.
Junction min. -40 °C
Junction max. 125 °C
thermal shutdown typ. 165 °C
Inductor size typ. 2.2 µH
Inductor suggested by Würth Elektronik
Automotive AEC-Q100 no
Light-Load-Mode no
Topology Boost
Peak Efficiency 90 %
Component count min. 15
current limit adjustable no
Nr.of package options 2
CSP
SC70
SOT
MSOP
QFN/DFN QFN-20
SO/SOIC
SOP TSSOP-20
DIP
TO
DDPAK

LT3579 Datasheet

Link to the most up-to-date LT3579 datasheet and the product page for EVM, tools and support information.

LT3579

LT3579 Price breaks and distributor sample stock

LT3579 prices and available online distributors.

OEMSecrets.com
findchips.com

Available Distributors with stock: 6

ARROW-NAC (5)

ProductStockPriceBuy
LT3579EUFD#PBF4
14.71 USD
1004.01 USD
Buy Now
LT3579IFE-1#PBF6
15.47 USD
1004.65 USD
Buy Now
LT3579IFE-1#PBF230
15.47 USD
1004.65 USD
Buy Now
LT3579IUFD#PBF263
15.24 USD
1004.46 USD
Buy Now
LT3579EFE#PBF442
14.93 USD
1004.19 USD
Buy Now

Chip-One-Stop (4)

ProductStockPriceBuy
LT3579EFE#PBF74
16.29 USD
104.44 USD
504.28 USD
Buy Now
LT3579EFE#PBF1734
17.98 USD
56.82 USD
106.66 USD
506.28 USD
1005.91 USD
2005.78 USD
Buy Now
LT3579EUFD#PBF39
19.55 USD
59.37 USD
107.37 USD
Buy Now
LT3579IFE-1#PBF230
18.32 USD
57.11 USD
106.94 USD
506.55 USD
1006.17 USD
2006.03 USD
Buy Now

DIGI-KEY (5)

ProductStockPriceBuy
LT3579EUFD#PBF604
17.06 USD
254.71 USD
1004.01 USD
Buy Now
LT3579EFE#PBF899
17.36 USD
254.93 USD
1004.19 USD
Buy Now
LT3579EFE-1#PBF352
17.36 USD
254.93 USD
1004.19 USD
Buy Now
LT3579IUFD-1#PBF197
17.84 USD
255.24 USD
1004.46 USD
Buy Now
LT3579IUFD#PBF62
17.84 USD
255.24 USD
1004.46 USD
Buy Now
LT3579EUFD-1#PBF0
3654.01 USD
Buy Now
LT3579EUFD#TRPBF0
25004.11 USD
Buy Now
LT3579EUFD-1#TRPBF0
25004.11 USD
Buy Now
LT3579EFE#TRPBF0
25004.29 USD
Buy Now
LT3579EFE-1#TRPBF0
25004.29 USD
Buy Now
LT3579IUFD#TRPBF0
25004.56 USD
Buy Now
LT3579IUFD-1#TRPBF0
25004.56 USD
Buy Now
LT3579IFE#PBF0
3704.65 USD
Buy Now
LT3579IFE-1#PBF0
2224.65 USD
Buy Now
LT3579IFE#TRPBF0
25004.75 USD
Buy Now
LT3579IFE-1#TRPBF0
25004.75 USD
Buy Now

Element14 (3)

ProductStockPriceBuy
LT3579EFE-1#PBF67
111.77 USD
257.88 USD
1006.70 USD
Buy Now
LT3579EFE#PBF106
111.77 USD
257.88 USD
1006.70 USD
Buy Now
LT3579IUFD#PBF2
112.53 USD
258.38 USD
1007.13 USD
Buy Now

FARNELL-ELEMENT14 (3)

ProductStockPriceBuy
LT3579EFE-1#PBF68Buy Now
LT3579EFE#PBF136Buy Now
LT3579IUFD#PBF2Buy Now

RS-COMPONENTS (1)

ProductStockPriceBuy
LT3579EFE#PBF55Buy Now

Available Distributors without stock: 1

NEWARK (0)

ProductStockPriceBuy
LT3579EFE#PBF0
17.38 USD
254.95 USD
1004.19 USD
Buy Now
LT3579EFE#TRPBF0
17.15 USD
25005.13 USD
Buy Now
LT3579EUFD#PBF0
17.06 USD
254.74 USD
1004.01 USD
Buy Now
LT3579EUFD#TRPBF0
16.83 USD
25004.90 USD
Buy Now
LT3579IUFD#PBF0
17.85 USD
255.27 USD
1004.46 USD
Buy Now

Available Distributors with stock: 0

no online Distributor with LT3579 stock available

Alternatives and equivalents

The following DC/DC Boost Converter are similar to LT3579. Optional, compare LT3579 side-by-side with other Boost Converter via the Comparison function.

Variation Compare Product Manufacturer Package
10% LT3581 LT3581 product overviewLT3581 product overview Linear Technology MSOP-16, DFN-14
10% LT3959 LT3959 product overviewLT3959 product overview Linear Technology QFN-36
25% TPS61175 TPS61175 product overviewTPS61175 product overview Texas Instruments HTSSOP-14
25% TPS61175-Q1 TPS61175-Q1 product overviewTPS61175-Q1 product overview Texas Instruments HTSSOP-14
50% LT3580 LT3580 product overviewLT3580 product overview Linear Technology MSOP-8, DFN-8

Inductor suggestions

Below you can find matching inductors from Wuerth Elektronik calculated on the maximum parameters of LT3579.

V-IN min. 2.3 V, Current-Limit typ. 4.2 A, V-OUT max. 40 V, Frequency typ. 2500 kHz
Order Code Spec L (µH) IR (A) ISAT (A) RDC (mΩ) L x W x H (mm)
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