LT3957 Boost Converter Overview

Description

Manufacturer
 
Category
Sub-Category

LT3957 is a 36.00 V, 5.90 A switch current limit non-sync Boost Converter from . The input voltage from 3.00 V to 40.00 V  can be boosted into an output voltage ranging from 3.00 V to 36.00 V.

Features of the Boost Converter are adjustable 1000 kHz switching frequency, a typical inductor size of 10.0 µH and it offers a peak efficiency of  up to 95 %. The minimum external component count is 13 and LT3957 is available in 1 package option(s): QFN-36 .

For LT3957 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. 3.00 V
V-IN max. 40.00 V
Current-Limit typ.? 5.90 A
V-OUT min. 3.00 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 no
LBI/LBO no
Frequency sync. min. 100 kHz
Frequency sync. max. 1000 kHz
Down Mode no
Quiescent current max. 2300 µA
Operating min.
Operating max.
Junction min. -40 °C
Junction max. 125 °C
thermal shutdown typ. 165 °C
Inductor size typ. 10.0 µH
Inductor suggested by Würth Elektronik
Automotive AEC-Q100 no
Light-Load-Mode no
Topology Boost
Peak Efficiency 95 %
Component count min. 13
current limit adjustable no
Nr.of package options 1
CSP
SC70
SOT
MSOP
QFN/DFN QFN-36
SO/SOIC
SOP
DIP
TO
DDPAK

LT3957 Datasheet

Link to the most up-to-date LT3957 datasheet and the product page for EVM, tools and support information.

LT3957

LT3957 Price breaks and distributor sample stock

LT3957 prices and available online distributors.

OEMSecrets.com
findchips.com

Available Distributors with stock: 6

Chip One Stop (1)

ProductStockPriceBuy
LT3957AEUHE#PBF49
16.26 USD
104.12 USD
Buy Now

Digi-Key (5)

ProductStockPriceBuy
LT3957AEUHE#PBF1353
16.28 USD
254.22 USD
1003.58 USD
Buy Now
LT3957EUHE#PBF1180
16.28 USD
254.22 USD
1003.58 USD
Buy Now
LT3957AIUHE#PBF623
17.24 USD
254.84 USD
1004.12 USD
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LT3957IUHE#PBF107
17.24 USD
254.84 USD
1004.12 USD
Buy Now
DC1544A4
1175.88 USD
Buy Now
LT3957EUHE#TRPBF0
25003.68 USD
Buy Now
LT3957AEUHE#TRPBF0
25003.68 USD
Buy Now
LT3957IUHE#TRPBF0
25004.22 USD
Buy Now
LT3957AIUHE#TRPBF0
25004.22 USD
Buy Now

Element14 (1)

ProductStockPriceBuy
LT3957AEUHE#PBF504
19.68 USD
256.51 USD
1005.52 USD
Buy Now
LT3957AIUHE#PBF0
111.16 USD
257.46 USD
1006.35 USD
Buy Now

Farnell Element14 (1)

ProductStockPriceBuy
LT3957AEUHE#PBF524Buy Now

NEWARK (1)

ProductStockPriceBuy
LT3957AEUHE#PBF0
16.30 USD
254.23 USD
1003.58 USD
Buy Now
LT3957AIUHE#PBF0
17.26 USD
254.87 USD
1004.12 USD
Buy Now
LT3957EUHE#PBF25
16.30 USD
254.23 USD
1003.58 USD
Buy Now

RS Components (1)

ProductStockPriceBuy
LT3957EUHE#PBF59Buy Now

Available Distributors with stock: 0

no online Distributor with LT3957 stock available

Alternatives and equivalents

The following DC/DC Boost Converter are similar to LT3957. Optional, compare LT3957 side-by-side with other Boost Converter via the Comparison function.

Variation Compare Product Manufacturer Package
0% LT3579-1 LT3579-1 product overviewLT3579-1 product overview Linear Technology QFN-20, TSSOP-20
0% LT3957A LT3957A product overviewLT3957A product overview Linear Technology QFN-36
0% LT3959 LT3959 product overviewLT3959 product overview Linear Technology QFN-36
0% TPS55340 TPS55340 product overviewTPS55340 product overview Texas Instruments WQFN-16, HTSSOP-14
0% TPS55340-Q1 TPS55340-Q1 product overviewTPS55340-Q1 product overview Texas Instruments WQFN-16, HTSSOP-14
0% TPS55340-EP TPS55340-EP product overviewTPS55340-EP product overview Texas Instruments WQFN-16
25% TPS55332-Q1 TPS55332-Q1 product overviewTPS55332-Q1 product overview Texas Instruments HTSSOP-20
50% LT3579 LT3579 product overviewLT3579 product overview Linear Technology QFN-20, TSSOP-20
50% LT3581 LT3581 product overviewLT3581 product overview Linear Technology MSOP-16, DFN-14
50% TPS61175 TPS61175 product overviewTPS61175 product overview Texas Instruments HTSSOP-14
50% TPS61175-Q1 TPS61175-Q1 product overviewTPS61175-Q1 product overview Texas Instruments HTSSOP-14

Inductor suggestions

Below you can find matching inductors from Wuerth Elektronik calculated on the maximum parameters of LT3957.

V-IN min. 3 V, Current-Limit typ. 5.9 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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