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: 6

ARROW-NAC (2)

ProductStockPriceBuy
LT1949-1EMS8#PBF153
12.66 USD
1002.30 USD
Buy Now
LT1949EMS8#PBF399
12.66 USD
1002.30 USD
Buy Now

Chip-One-Stop (5)

ProductStockPriceBuy
LT1949-1EMS8#PBF153
14.06 USD
103.46 USD
503.22 USD
1003.18 USD
Buy Now
LT1949EMS8#PBF951
14.06 USD
103.46 USD
503.22 USD
1003.18 USD
2003.11 USD
5002.93 USD
Buy Now
LT1949ES8#PBF79
13.97 USD
103.38 USD
503.15 USD
Buy Now
LT1949ES8#TRPBF2500
25002.49 USD
Buy Now
LT1949IS8#PBF80
14.50 USD
103.79 USD
253.74 USD
503.57 USD
Buy Now

DIGI-KEY (2)

ProductStockPriceBuy
LT1949EMS8#PBF601
14.52 USD
253.00 USD
1002.30 USD
Buy Now
LT1949ES8#PBF165
14.40 USD
252.92 USD
1002.24 USD
Buy Now
LT1949ES8#TRPBF0
25002.34 USD
Buy Now
LT1949EMS8#TRPBF0
25002.40 USD
Buy Now
LT1949IS8#PBF0
3002.65 USD
Buy Now
LT1949IS8#TRPBF0
25002.75 USD
Buy Now
LT1949-1EMS8#PBF0
6000.00 USD
Buy Now
LT1949-1EMS8#TRPBF0
25000.00 USD
Buy Now

Element14 (1)

ProductStockPriceBuy
LT1949EMS8#PBF162
17.23 USD
254.80 USD
1003.72 USD
Buy Now

FARNELL-ELEMENT14 (1)

ProductStockPriceBuy
LT1949EMS8#PBF232Buy Now

RS-COMPONENTS (1)

ProductStockPriceBuy
LT1949EMS8#PBF58Buy Now

Available Distributors without stock: 1

NEWARK (0)

ProductStockPriceBuy
LT1949EMS8#PBF0
12.40 USD
Buy Now

Available Distributors with stock: 0

no online Distributor with LT1949 stock available

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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