LT3905 Boost Converter Overview

Description

Manufacturer
 
Category
Sub-Category

LT3905 is a 2.60 V, 0.40 A switch current limit non-sync Boost Converter from . The input voltage from 2.70 V to 12.00 V  can be boosted into an output voltage ranging from 2.60 V to 2.60 V.

Features of the Boost Converter are adjustable 2000 kHz switching frequency, a typical inductor size of 10.0 µH and it offers a peak efficiency of  up to %. The minimum external component count is 11 and LT3905 is available in 1 package option(s): QFN-16 .

For LT3905 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. 2.70 V
V-IN max. 12.00 V
Current-Limit typ.? 0.40 A
V-OUT min. 2.60 V
V-OUT max. 2.60 V
VOUT 2.60
VOUT programmable yes
sync/non-sync non-sync
Frequency typ. 2000 kHz
Frequency adjustable adjustable
Frequency selectable 1000/2000 kHz
Frequency adj. min.
Frequency adj. max.
extern clock sync. no
Softstart yes
Softstart adjustable no
Tracking no
PG/Power OK no
LBI/LBO no
Frequency sync. min.
Frequency sync. max.
Down Mode no
Quiescent current max. 24 µA
Operating min.
Operating max.
Junction min. -40 °C
Junction max. 125 °C
thermal shutdown typ. 150 °C
Inductor size typ. 10.0 µH
Inductor suggested by Würth Elektronik
Automotive AEC-Q100 no
Light-Load-Mode no
Topology Boost
Peak Efficiency
Component count min. 11
current limit adjustable yes
Nr.of package options 1
CSP
SC70
SOT
MSOP
QFN/DFN QFN-16
SO/SOIC
SOP
DIP
TO
DDPAK

LT3905 Datasheet

Link to the most up-to-date LT3905 datasheet and the product page for EVM, tools and support information.

LT3905

LT3905 Price breaks and distributor sample stock

LT3905 prices and available online distributors.

OEMSecrets.com
findchips.com

Available Distributors with stock: 4

ARROW-NAC (1)

ProductStockPriceBuy
LT3905EUD#PBF29
13.64 USD
1003.10 USD
Buy Now

Chip-One-Stop (2)

ProductStockPriceBuy
LT3905EUD#PBF111
14.71 USD
103.56 USD
503.27 USD
Buy Now
LT3905EUD#PBF134
13.60 USD
103.04 USD
502.83 USD
Buy Now

DIGI-KEY (2)

ProductStockPriceBuy
LT3905IUD#PBF205
16.03 USD
254.02 USD
1003.41 USD
Buy Now
LT3905EUD#PBF0
15.53 USD
253.67 USD
1003.10 USD
Buy Now
DC1956A1
1125.63 USD
Buy Now
LT3905EUD#TRPBF0
25003.20 USD
Buy Now
LT3905IUD#TRPBF0
25003.51 USD
Buy Now

NEWARK (1)

ProductStockPriceBuy
LT3905EUD#PBF70
13.10 USD
253.10 USD
1003.10 USD
Buy Now
LT3905IUD#PBF0
13.55 USD
Buy Now

Available Distributors with stock: 0

no online Distributor with LT3905 stock available

Alternatives and equivalents

The following DC/DC Boost Converter are similar to LT3905. Optional, compare LT3905 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 LT3905.

V-IN min. 2.7 V, Current-Limit typ. 0.4 A, V-OUT max. 2.6 V, Frequency typ. 2000 kHz
Order Code Spec L (µH) IR (A) ISAT (A) RDC (mΩ) L x W x H (mm)
74479762168 0.7 1.0 0.7 220.00 1.6 x 0.8 x 0.55
74479763168 0.7 1.0 1.0 180.00 1.6 x 0.8 x 0.95
74479773147 0.5 1.4 1.2 100.00 2 x 1.25 x 0.6
74479773154 0.5 1.3 1.0 120.00 2 x 1.25 x 0.6
74479774147 0.5 1.3 0.7 120.00 2 x 1.25 x 0.6
74479775147A 0.5 1.4 1.0 100.00 2 x 1.2 x 1.2
74479787147B 0.5 2.7 1.0 40.00 2.5 x 2 x 1
74479897150 0.5 2.9 1.1 25.00 3.2 x 2.6 x 0.7
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