LT1171 Boost Converter Overview

Description

Manufacturer
 
Category
Sub-Category

LT1171 is a 40.00 V, 3.75 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 40.00 V.

Features of the Boost Converter are fixed 100 kHz switching frequency, a typical inductor size of 50.0 µH and it offers a peak efficiency of  up to 85 %. The minimum external component count is 8 and LT1171 is available in 2 package option(s): TO220-5 DD-5 .

For LT1171 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.? 3.75 A
V-OUT min. 3.00 V
V-OUT max. 40.00 V
VOUT adjustable
VOUT programmable no
sync/non-sync non-sync
Frequency typ. 100 kHz
Frequency adjustable fixed
Frequency selectable
Frequency adj. min.
Frequency adj. max.
extern clock sync. yes
Softstart yes
Softstart adjustable yes
Tracking no
PG/Power OK no
LBI/LBO no
Frequency sync. min. 120 kHz
Frequency sync. max. 160 kHz
Down Mode no
Quiescent current max. 9000 µA
Operating min.
Operating max.
Junction min. -40 °C
Junction max. 125 °C
thermal shutdown typ.
Inductor size typ. 50.0 µH
Inductor suggested by Würth Elektronik
Automotive AEC-Q100 no
Light-Load-Mode no
Topology Boost
Peak Efficiency 85 %
Component count min. 8
current limit adjustable yes
Nr.of package options 2
CSP
SC70
SOT
MSOP
QFN/DFN
SO/SOIC
SOP
DIP
TO TO220-5
DDPAK DD-5

LT1171 Datasheet

Link to the most up-to-date LT1171 datasheet and the product page for EVM, tools and support information.

LT1171

LT1171 Price breaks and distributor sample stock

LT1171 prices and available online distributors.

OEMSecrets.com
findchips.com

Available Distributors with stock: 9

Chip One Stop (10)

ProductStockPriceBuy
LT1171CQ#PBF82
114.70 USD
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LT1171CT#PBF649
113.50 USD
1007.91 USD
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LT1171HVCQ#PBF54
117.30 USD
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LT1171HVCT#PBF127
117.70 USD
10010.10 USD
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LT1171HVCT#PBF127
117.70 USD
10010.10 USD
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LT1171HVIQ450
50016.53 USD
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LT1171HVIQ#PBF32
118.30 USD
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LT1171IQ#PBF120
114.40 USD
1008.39 USD
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LT1171IQ#TR1500
150011.80 USD
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LT1171IT#PBF37
117.70 USD
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Digi-Key (6)

ProductStockPriceBuy
LT1171CT#PBF663
19.10 USD
256.04 USD
1004.85 USD
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LT1171IQ#PBF657
110.76 USD
257.15 USD
1005.56 USD
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LT1171HVCT#PBF1656
111.79 USD
257.83 USD
1006.32 USD
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LT1171IT#PBF203
111.79 USD
257.83 USD
1006.48 USD
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LT1171HVCQ#PBF124
112.30 USD
258.17 USD
1006.83 USD
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LT1171HVIQ#PBF86
114.61 USD
259.70 USD
1008.20 USD
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LT1171CQ#PBF0
19.87 USD
256.55 USD
1005.30 USD
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LT1171CT#06PBF0
19.10 USD
256.04 USD
1004.85 USD
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PE-68488NL0
7002.30 USD
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LT1171CQ#TRPBF0
7505.41 USD
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LT1171IQ#TRPBF0
7505.66 USD
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LT1171HVCT#30PBF0
10006.78 USD
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LT1171HVCQ#TRPBF0
7506.94 USD
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LT1171HVIT#PBF0
1007.59 USD
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LT1171HVIQ#TRPBF0
7508.30 USD
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DC139A-B0
1102.00 USD
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Distrelec (1)

ProductStockPriceBuy
LT1171CT#PBF26Buy Now

Element14 (2)

ProductStockPriceBuy
LT1171CT#PBF15
114.30 USD
259.49 USD
1007.62 USD
Buy Now
LT1171IQ#PBF2
18.46 USD
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Farnell Element14 (1)

ProductStockPriceBuy
LT1171CT#PBF15Buy Now
LT1171IQ#PBF0Buy Now

Newark Electronics (1)

ProductStockPriceBuy
LT1171CQ#PBF0
19.62 USD
256.40 USD
1005.20 USD
Buy Now
LT1171CT#06PBF2
14.75 USD
254.75 USD
1004.75 USD
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LT1171HVIQ#PBF0
114.32 USD
259.57 USD
1008.04 USD
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LT1171HVIT#PBF0
113.62 USD
259.08 USD
1007.44 USD
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LT1171IQ#TRPBF0
18.54 USD
7506.10 USD
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RS Components (5)

ProductStockPriceBuy
LT1171CQ#PBF57Buy Now
LT1171CT#PBF22Buy Now
LT1171CT#PBF10Buy Now
LT1171HVCT#PBF87Buy Now
LT1171IT#PBF51Buy Now

Reichelt Elektronik (1)

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LT1171CT#PBF1Buy Now

Transfer Multisort Elektronik (3)

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LT1171CQ#PBF40Buy Now
LT1171CT#PBF35Buy Now
LT1171HVIQ#PBF45Buy Now

Available Distributors without stock: 1

Buerklin (0)

ProductStockPriceBuy
LT1171CT-PBF0Buy Now

Available Distributors with stock: 15

Arrow Electronics

ProductStockPriceBuy
LT1171IQ#TR 1500
7509.56 $
15007.17 $
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LT1171CT#PBF 703
15.75 $
1004.75 $
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LT1171CT#PBF 649
15.75 $
1004.75 $
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LT1171HVIQ 575
198.83 $
1070.59 $
5042.34 $
10017.02 $
50016.53 $
100016.06 $
250015.84 $
500015.62 $
1000015.41 $
2500014.81 $
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LT1171CQ#PBF 300
16.25 $
1005.20 $
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LT1171HVCQ#PBF 54
17.35 $
1006.70 $
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LT1171CT#06PBF 50
15.75 $
1004.75 $
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LT1171IT#PBF 37
17.50 $
1006.35 $
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LT1171HVIQ 0 Buy Now
LT1171CQ 0 Buy Now
LT1171IQ 0 Buy Now
LT1171IQ 0 Buy Now
LT1171HVCQ#PBF 0
17.35 $
1006.70 $
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LT1171CT#06PBF 0
15.75 $
1004.75 $
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LT1171IQ#TR 0 Buy Now
show stock=0hide stock=0

Digi-Key

ProductStockPriceBuy
LT1171HVCT#PBF 1656
1005.29 €
256.55 €
19.87 €
Buy Now
LT1171CT#PBF 663
1004.05 €
255.06 €
17.62 €
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LT1171IQ#PBF 657
1004.65 €
255.98 €
19.01 €
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LT1171IT#PBF 203
1005.42 €
256.55 €
19.87 €
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LT1171HVCQ#PBF 124
1005.72 €
256.84 €
110.29 €
Buy Now
LT1171HVIQ#PBF 86
1006.86 €
258.12 €
112.23 €
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LT1171CQ#PBF 0
1004.44 €
255.48 €
18.26 €
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LT1171CT#06PBF 0
1004.05 €
255.06 €
17.62 €
Buy Now
PE-68488NL 0
7001.93 €
Buy Now
LT1171CQ#TRPBF 0
7504.52 €
Buy Now
LT1171IQ#TRPBF 0
7504.74 €
Buy Now
LT1171HVCT#30PBF 0
10005.68 €
Buy Now
LT1171HVCQ#TRPBF 0
7505.80 €
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LT1171HVIT#PBF 0
1006.35 €
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LT1171HVIQ#TRPBF 0
7506.95 €
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show stock=0hide stock=0

Newark element14

ProductStockPriceBuy
LT1171CT#PBF 0
18.98 $
255.94 $
1004.75 $
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LT1171HVIT#PBF 0
113.62 $
259.08 $
1007.44 $
Buy Now
LT1171IQ#PBF 0
110.63 $
257.03 $
1005.45 $
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LT1171CQ#PBF 0
19.62 $
256.40 $
1005.20 $
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LT1171HVIQ#PBF 0
114.32 $
259.57 $
1008.04 $
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LT1171CT#06PBF 2
14.75 $
254.75 $
1004.75 $
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LT1171IQ#TRPBF 0
18.54 $
7506.10 $
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show stock=0hide stock=0

Mouser Electronics

ProductStockPriceBuy
LT1171CT#PBF 250
19.12 $
108.36 $
256.05 $
1004.85 $
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LT1171CQ#PBF 200
19.89 $
109.06 $
256.56 $
1005.31 $
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LT1171IT#PBF 150
111.82 $
1010.83 $
257.83 $
1006.48 $
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LT1171HVIQ#PBF 100
114.64 $
1013.42 $
259.70 $
1008.21 $
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LT1171HVCT#PBF 150
111.82 $
1010.83 $
257.83 $
1006.33 $
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LT1171HVCQ#PBF 150
112.33 $
1011.30 $
258.17 $
1006.84 $
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LT1171HVIT#PBF 100
113.87 $
1012.71 $
259.19 $
1007.59 $
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LT1171IQ#PBF 98
110.79 $
109.89 $
257.15 $
1005.56 $
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LT1171HVIQ#TRPBF 0
116.67 $
1015.47 $
2514.87 $
1009.97 $
2509.14 $
5008.31 $
Buy Now
LT1171CQ#TRPBF 0
111.36 $
1010.54 $
2510.13 $
1006.49 $
2505.95 $
5005.41 $
Buy Now
LT1171CT#06PBF 0
19.12 $
108.36 $
256.05 $
1004.85 $
Buy Now
LT1171IQ#TRPBF 0
112.36 $
1011.47 $
2511.02 $
1006.80 $
2506.23 $
5005.67 $
Buy Now
LT1171HVCT#30PBF 0
112.71 $
1011.65 $
258.43 $
1006.79 $
Buy Now
LT1171HVCQ#TRPBF 0
114.09 $
1013.07 $
2512.56 $
1008.33 $
2507.63 $
5006.94 $
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LT1171CT 0 Buy Now
show stock=0hide stock=0

Bristol Electronics

ProductStockPriceBuy
LT1171CK 2
118.00 $
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LT1171IT 282
110.53 $
46.84 $
95.26 $
254.91 $
524.56 $
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LT1171CT 136 Buy Now

Quest Components

ProductStockPriceBuy
LT1171CK 1
119.50 $
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LT1171CQ 9
55.25 $
27.00 $
110.50 $
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LT1171CQ#PBF 41
374.88 $
45.63 $
111.25 $
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LT1171CQ#PBF 8
45.46 $
27.28 $
110.92 $
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LT1171CQ#TR 58
374.88 $
45.63 $
111.25 $
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LT1171CQ#TRPBF 17
45.85 $
27.80 $
111.70 $
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LT1171CT 8
55.00 $
26.66 $
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LT1171CT 60
414.66 $
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47.50 $
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268.91 $
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6314.55 $
3864.76 $
112.99 $
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LT1171IT 225
776.11 $
296.58 $
114.10 $
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TME Electronic Components

ProductStockPriceBuy
LT1171CT#PBF 35
110.10 $
38.95 $
107.50 $
256.70 $
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LT1171CQ#PBF 40
110.90 $
39.83 $
108.68 $
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LT1171HVIQ#PBF 45
113.30 $
512.30 $
259.43 $
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basicEparts

ProductStockPriceBuy
LT1171IQ 35 Buy Now
LT1171CT 46 Buy Now

ComS.I.T.

ProductStockPriceBuy
LT1171IQPBF 20
LT1171CQTR 550
LT1171CTPBF 5
LT1171ITPBF 95
LT1171CT 604
LT1171CQ#PBF 15

element14 Asia-Pacific

ProductStockPriceBuy
LT1171CT#PBF 15
111.44 $
257.59 $
1006.09 $
Buy Now
LT1171IQ#PBF 2
16.77 $
Buy Now

Farnell element14

ProductStockPriceBuy
LT1171CT#PBF 15
17.35 GBP
254.51 GBP
1003.87 GBP
Buy Now
LT1171IQ#PBF 0
18.71 GBP
255.41 GBP
1004.44 GBP
Buy Now
show stock=0hide stock=0

Chip One Exchange

ProductStockPriceBuy
LT1171CQ 10115
LT1171CT7#30 40
LT1171CQ#TR 7762

Chip1Stop

ProductStockPriceBuy
LT1171IQ#TR 1500
150011.80 $
Buy Now
LT1171HVIQ 450
50016.53 $
Buy Now
LT1171CQ#PBF 82
114.70 $
Buy Now
LT1171CT#PBF 649
113.50 $
1007.91 $
Buy Now
LT1171HVCQ#PBF 54
117.30 $
Buy Now
LT1171HVCT#PBF 127
117.70 $
10010.10 $
Buy Now
LT1171HVIQ#PBF 32
118.30 $
Buy Now
LT1171IQ#PBF 120
114.40 $
1008.39 $
Buy Now
LT1171IT#PBF 37
117.70 $
Buy Now

New Advantage Corporation

ProductStockPriceBuy
MTLLT1171BK 8
196.12 $
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LT1171CQ 150 Buy Now
LT1171IQ#PBF 1000
506.96 $
Buy Now

RS Components

ProductStockPriceBuy
LT1171CT#PBF 10
106.21 GBP
206.02 GBP
Buy Now
LT1171CT#PBF 22
16.75 GBP
106.21 GBP
206.02 GBP
Buy Now
LT1171HVCT#PBF 87
108.62 GBP
258.53 GBP
508.41 GBP
758.30 GBP
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LT1171IT#PBF 51
108.30 GBP
257.42 GBP
507.04 GBP
756.94 GBP
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LT1171CQ#PBF 57
107.23 GBP
257.13 GBP
507.05 GBP
756.95 GBP
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Alternatives and equivalents

The following DC/DC Boost Converter are similar to LT1171. Optional, compare LT1171 side-by-side with other Boost Converter via the Comparison function.

Variation Compare Product Manufacturer Package
0% LT1171HV LT1171HV product overviewLT1171HV product overview Linear Technology TO220-5, DD-5
50% LT1172 LT1172 product overviewLT1172 product overview Linear Technology SO-8, DIP-8, TO220-5, DD-5
50% LT1172HV LT1172HV product overviewLT1172HV product overview Linear Technology SO-8, DIP-8, TO220-5, DD-5

Inductor suggestions

Below you can find matching inductors from Wuerth Elektronik calculated on the maximum parameters of LT1171.

V-IN min. 3 V, Current-Limit typ. 3.75 A, V-OUT max. 40 V, Frequency typ. 100 kHz
Order Code Spec L (µH) IR (A) ISAT (A) RDC (mΩ) L x W x H (mm)
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Module
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0% tolerance (0)
10% tolerance (0)
25% tolerance (0)
50% tolerance (0)
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