LT1949 Boost Converter Overview

Description

Manufacturer
 
Category
Sub-Category

LT1949 is a 28.00 V, 1.13 A switch current limit non-sync Boost Converter from . The input voltage from 1.70 V to 12.00 V  can be boosted into an output voltage ranging from 1.70 V to 28.00 V.

Features of the Boost Converter are fixed 600 kHz switching frequency, a typical inductor size of 10.0 µH and it offers a peak efficiency of  up to 86 %. The minimum external component count is 8 and LT1949 is available in 2 package option(s): MSOP-8 SO-8 .

For LT1949 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. 1.70 V
V-IN max. 12.00 V
Current-Limit typ.? 1.13 A
V-OUT min. 1.70 V
V-OUT max. 28.00 V
VOUT adjustable
VOUT programmable no
sync/non-sync non-sync
Frequency typ. 600 kHz
Frequency adjustable fixed
Frequency selectable
Frequency adj. min.
Frequency adj. max.
extern clock sync. no
Softstart no
Softstart adjustable no
Tracking no
PG/Power OK no
LBI/LBO yes
Frequency sync. min.
Frequency sync. max.
Down Mode no
Quiescent current max. 7500 µA
Operating min. -40 °C
Operating max. 85 °C
Junction min.
Junction max.
thermal shutdown typ.
Inductor size typ. 10.0 µH
Inductor suggested by Würth Elektronik
Automotive AEC-Q100 no
Light-Load-Mode no
Topology Boost
Peak Efficiency 86 %
Component count min. 8
current limit adjustable no
Nr.of package options 2
CSP
SC70
SOT
MSOP MSOP-8
QFN/DFN
SO/SOIC SO-8
SOP
DIP
TO
DDPAK

LT1949 Datasheet

Link to the most up-to-date LT1949 datasheet and the product page for EVM, tools and support information.

LT1949

LT1949 Price breaks and distributor sample stock

LT1949 prices and available online distributors.

OEMSecrets.com
findchips.com

Available Distributors with stock: 3

Digi-Key (2)

ProductStockPriceBuy
LT1949EMS8#PBF1120
14.61 USD
253.06 USD
1002.35 USD
Buy Now
LT1949ES8#PBF301
14.48 USD
252.98 USD
1002.28 USD
Buy Now
LT1949ES8#TRPBF0
25002.39 USD
Buy Now
LT1949EMS8#TRPBF0
25002.45 USD
Buy Now
LT1949IS8#PBF0
3002.70 USD
Buy Now
LT1949IS8#TRPBF0
25002.81 USD
Buy Now
LT1949-1EMS8#PBF0
6000.00 USD
Buy Now
LT1949-1EMS8#TRPBF0
25000.00 USD
Buy Now

Mouser-Electronics (2)

ProductStockPriceBuy
LT1949ES8#PBF87
14.60 USD
104.23 USD
253.05 USD
1002.34 USD
Buy Now
LT1949EMS8#PBF300 On Order
14.74 USD
104.35 USD
253.14 USD
1002.41 USD
Buy Now
LT1949EMS8#TRPBFNone
25002.51 USD
Buy Now
LT1949IS8#PBFNone
3002.76 USD
Buy Now
LT1949ES8#TRPBFNone
25002.45 USD
Buy Now
LT1949IS8#TRPBFNone
25002.88 USD
Buy Now

RS Components (1)

ProductStockPriceBuy
LT1949EMS8#PBF80Buy Now

Available Distributors without stock: 2

Farnell Element14 (0)

ProductStockPriceBuy
LT1949EMS8#PBF0Buy Now

Rutronik (0)

ProductStockPriceBuy
nnBuy Now

Available Distributors with stock: 5

Arrow Electronics

ProductStockPriceBuy
LT1949EMS8#PBF 604
12.66 $
1002.30 $
Buy Now
LT1949-1EMS8#PBF 153
12.66 $
1002.30 $
Buy Now
LT1949EMS8#PBF 0
12.66 $
1002.30 $
Buy Now
LT1949ES8#PBF 0
12.60 $
1002.24 $
Buy Now
LT1949IS8#PBF 0
12.95 $
1002.65 $
Buy Now
LT1949EMS8#TRPBF 0
1002.40 $
Buy Now
LT1949ES8#TRPBF 0 Buy Now
LT1949ES8#TRPBF 0
1002.34 $
Buy Now
show stock=0hide stock=0

Digi-Key

ProductStockPriceBuy
LT1949EMS8#PBF 1120
1001.89 €
252.47 €
13.72 €
Buy Now
LT1949ES8#PBF 301
1001.84 €
252.40 €
13.61 €
Buy Now
LT1949ES8#TRPBF 0
25001.92 €
Buy Now
LT1949EMS8#TRPBF 0
25001.97 €
Buy Now
LT1949IS8#PBF 0
3002.18 €
Buy Now
LT1949IS8#TRPBF 0
25002.26 €
Buy Now
LT1949-1EMS8#PBF 0 Buy Now
LT1949-1EMS8#TRPBF 0 Buy Now
show stock=0hide stock=0

Mouser Electronics

ProductStockPriceBuy
LT1949ES8#PBF 87
14.49 $
104.12 $
252.98 $
1002.28 $
Buy Now
LT1949EMS8#PBF 0
14.62 $
104.24 $
253.06 $
1002.35 $
Buy Now
LT1949EMS8#TRPBF 0
25002.45 $
Buy Now
LT1949IS8#PBF 0
3002.70 $
Buy Now
LT1949ES8#TRPBF 0
25002.39 $
Buy Now
LT1949IS8#TRPBF 0
25002.80 $
Buy Now
LT1949EMS8 0 Buy Now
LT1949ES8 0 Buy Now
LT1949IS8 0 Buy Now
LT1949EMS8#TR 0 Buy Now
LT1949IS8#TR 0 Buy Now
LT1949ES8#TR 0 Buy Now
show stock=0hide stock=0

Quest Components

ProductStockPriceBuy
LT1949EMS8#TR 783
2341.98 $
822.15 $
14.95 $
Buy Now

RS Components

ProductStockPriceBuy
LT1949EMS8#PBF 80
103.45 GBP
203.30 GBP
303.16 GBP
502.97 GBP
Buy Now

Available Distributors without stock: 1

Farnell element14

ProductStockPriceBuy
LT1949EMS8#PBF 0
13.86 GBP
103.46 GBP
253.20 GBP
502.93 GBP
1002.67 GBP
Buy Now

Alternatives and equivalents

The following DC/DC Boost Converter are similar to LT1949. Optional, compare LT1949 side-by-side with other Boost Converter via the Comparison function.

Variation Compare Product Manufacturer Package
50% LT1316 LT1316 product overviewLT1316 product overview Linear Technology MSOP-8, SO-8
50% LT1317 LT1317 product overviewLT1317 product overview Linear Technology MSOP-8, SO-8
50% LT1317B LT1317B product overviewLT1317B product overview Linear Technology MSOP-8, SO-8
50% SC1417B SC1417B product overviewSC1417B product overview Semtech MSOP-8

Inductor suggestions

Below you can find matching inductors from Wuerth Elektronik calculated on the maximum parameters of LT1949.

V-IN min. 1.7 V, Current-Limit typ. 1.13 A, V-OUT max. 28 V, Frequency typ. 600 kHz
Order Code Spec L (µH) IR (A) ISAT (A) RDC (mΩ) L x W x H (mm)
744305033 0.3 28.0 26.0 0.16 13.5 x 13.3 x 5.2
744305040 0.4 28.0 20.0 0.16 13.5 x 13.3 x 5.2
744306025 0.3 26.0 32.0 0.30 10.5 x 10.3 x 5.5
744306030 0.3 26.0 24.0 0.30 10.5 x 10.3 x 5.5
744308033 0.3 27.0 30.0 0.37 10.1 x 7 x 7
744308040 0.4 25.0 26.0 0.37 10.1 x 7 x 7
7443081030 0.3 38.0 32.0 0.29 9.4 x 6.2 x 8.1
7443081040 0.4 38.0 21.0 0.29 9.4 x 6.2 x 8.1
744311047 0.4 19.0 25.0 1.85 7 x 6.9 x 4
744325040 0.4 24.0 37.0 0.67 10.5 x 10.2 x 5
7443340030 0.3 20.5 36.0 2.30 8.4 x 7.9 x 7.5
744355230 0.3 22.0 35.0 1.10 10.5 x 10.2 x 4.2
744373770033 0.3 24.0 35.0 0.88 13.5 x 12.6 x 3.5
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