LT3959 Boost Converter Overview

Description

Manufacturer
 
Category
Sub-Category

LT3959 is a 36.00 V, 7.00 A switch current limit non-sync Boost Converter from . The input voltage from 2.50 V to 40.00 V  can be boosted into an output voltage ranging from 2.50 V to 36.00 V.

Features of the Boost Converter are adjustable 1000 kHz switching frequency, a typical inductor size of 1.0 µH and it offers a peak efficiency of  up to 91 %. The minimum external component count is 15 and LT3959 is available in 1 package option(s): QFN-36 .

For LT3959 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. 2.50 V
V-IN max. 40.00 V
Current-Limit typ.? 7.00 A
V-OUT min. 2.50 V
V-OUT max. 36.00 V
VOUT adjustable
VOUT programmable no
sync/non-sync non-sync
Frequency typ. 1000 kHz
Frequency adjustable adjustable
Frequency selectable
Frequency adj. min. 100 kHz
Frequency adj. max. 1000 kHz
extern clock sync. yes
Softstart yes
Softstart adjustable yes
Tracking no
PG/Power OK yes
LBI/LBO no
Frequency sync. min. 100 kHz
Frequency sync. max. 1000 kHz
Down Mode no
Quiescent current max. 2500 µA
Operating min.
Operating max.
Junction min. -40 °C
Junction max. 125 °C
thermal shutdown typ. 165 °C
Inductor size typ. 1.0 µH
Inductor suggested by Würth Elektronik
Automotive AEC-Q100 no
Light-Load-Mode no
Topology Boost
Peak Efficiency 91 %
Component count min. 15
current limit adjustable no
Nr.of package options 1
CSP
SC70
SOT
MSOP
QFN/DFN QFN-36
SO/SOIC
SOP
DIP
TO
DDPAK

LT3959 Datasheet

Link to the most up-to-date LT3959 datasheet and the product page for EVM, tools and support information.

LT3959

LT3959 Price breaks and distributor sample stock

LT3959 prices and available online distributors.

OEMSecrets.com
findchips.com

Available Distributors with stock: 5

Chip-One-Stop (3)

ProductStockPriceBuy
LT3959EUHE#PBF427
15.53 USD
105.31 USD
503.82 USD
1003.76 USD
2003.47 USD
Buy Now
LT3959EUHE#PBF427
15.53 USD
105.31 USD
503.82 USD
1003.76 USD
2003.47 USD
Buy Now
LT3959IUHE#PBF187
17.65 USD
56.54 USD
106.39 USD
506.02 USD
1005.67 USD
Buy Now

DIGI-KEY (5)

ProductStockPriceBuy
LT3959EUHE#PBF172
16.53 USD
254.36 USD
1003.70 USD
Buy Now
LT3959IUHE#PBF251
17.51 USD
255.03 USD
1004.27 USD
Buy Now
LT3959EFE#PBF206
16.91 USD
254.63 USD
1003.93 USD
Buy Now
LT3959IFE#PBF128
17.89 USD
255.27 USD
1004.48 USD
Buy Now
DC1853A3
1175.88 USD
Buy Now
LT3959EUHE#TRPBF0
25003.80 USD
Buy Now
LT3959EFE#TRPBF0
20004.03 USD
Buy Now
LT3959IUHE#TRPBF0
25004.37 USD
Buy Now
LT3959IFE#TRPBF0
20004.58 USD
Buy Now

Element14 (2)

ProductStockPriceBuy
LT3959EFE#PBF52
110.96 USD
257.35 USD
1006.24 USD
Buy Now
LT3959IFE#PBF97
112.52 USD
258.36 USD
1007.11 USD
Buy Now

FARNELL-ELEMENT14 (2)

ProductStockPriceBuy
LT3959EFE#PBF54Buy Now
LT3959IFE#PBF97Buy Now

NEWARK (1)

ProductStockPriceBuy
LT3959EFE#PBF0
16.92 USD
254.64 USD
1003.93 USD
Buy Now
LT3959EUHE#PBF43
16.52 USD
254.37 USD
1003.70 USD
Buy Now
LT3959IFE#PBF0
17.89 USD
255.29 USD
1004.48 USD
Buy Now
LT3959IFE#TRPBF0
17.38 USD
20005.27 USD
Buy Now
LT3959IUHE#PBF0
17.52 USD
255.04 USD
1004.27 USD
Buy Now

Available Distributors with stock: 0

no online Distributor with LT3959 stock available

Alternatives and equivalents

The following DC/DC Boost Converter are similar to LT3959. Optional, compare LT3959 side-by-side with other Boost Converter via the Comparison function.

no alternatives found

Inductor suggestions

Below you can find matching inductors from Wuerth Elektronik calculated on the maximum parameters of LT3959.

V-IN min. 2.5 V, Current-Limit typ. 7 A, V-OUT max. 36 V, Frequency typ. 1000 kHz
Order Code Spec L (µH) IR (A) ISAT (A) RDC (mΩ) L x W x H (mm)
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