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: 7

DIGI-KEY (10)

ProductStockPriceBuy
LT1171CQ#PBF5Buy Now
LT1171CT#06PBF16Buy Now
LT1171CT#PBF994
18.92 USD
255.92 USD
1004.75 USD
Buy Now
LT1171CQ#PBF456
19.67 USD
256.42 USD
1005.20 USD
Buy Now
LT1171IQ#PBF1083
110.55 USD
257.01 USD
1005.45 USD
Buy Now
LT1171HVIQ#PBF416
114.32 USD
259.51 USD
1008.04 USD
Buy Now
LT1171HVCT#PBF1598
111.56 USD
257.67 USD
1006.20 USD
Buy Now
LT1171HVCQ#PBF153
112.06 USD
258.01 USD
1006.70 USD
Buy Now
LT1171IT#PBF203
111.56 USD
257.67 USD
1006.35 USD
Buy Now
LT1171CT#06PBF31
18.92 USD
255.92 USD
1004.75 USD
Buy Now
PE-68488NL0
7002.30 USD
Buy Now
LT1171CQ#TRPBF0
7505.30 USD
Buy Now
LT1171IQ#TRPBF0
7505.55 USD
Buy Now
LT1171HVCT#30PBF0
10006.65 USD
Buy Now
LT1171HVCQ#TRPBF0
7506.80 USD
Buy Now
LT1171HVIT#PBF0
1007.44 USD
Buy Now
LT1171HVIQ#TRPBF0
7508.14 USD
Buy Now
DC139A-B0
1100.50 USD
Buy Now

Element14 (2)

ProductStockPriceBuy
LT1171CT#PBF30
113.95 USD
259.27 USD
1007.43 USD
Buy Now
LT1171IQ#PBF80
116.50 USD
2510.96 USD
1008.53 USD
Buy Now

FARNELL-ELEMENT14 (2)

ProductStockPriceBuy
LT1171CT#PBF30Buy Now
LT1171IQ#PBF80Buy Now

NEWARK (1)

ProductStockPriceBuy
LT1171CQ#PBF0
19.62 USD
256.40 USD
1005.20 USD
Buy Now
LT1171CT#06PBF7
14.75 USD
254.75 USD
1004.75 USD
Buy Now
LT1171CT#PBF0
18.98 USD
255.94 USD
1004.75 USD
Buy Now
LT1171HVIQ#PBF0
114.32 USD
259.57 USD
1008.04 USD
Buy Now
LT1171HVIT#PBF0
113.62 USD
259.08 USD
1007.44 USD
Buy Now
LT1171IQ#PBF0
110.63 USD
257.03 USD
1005.45 USD
Buy Now
LT1171IQ#TRPBF0
18.54 USD
7506.10 USD
Buy Now

RS-COMPONENTS (7)

ProductStockPriceBuy
LT1171CQ#PBF21Buy Now
LT1171CQ#PBF12Buy Now
LT1171CT#PBF31Buy Now
LT1171CT#PBF14Buy Now
LT1171HVCT#PBF7Buy Now
LT1171HVCT#PBF31Buy Now
LT1171IT#PBF2Buy Now

Reichelt Elektronik (1)

ProductStockPriceBuy
LT1171CT#PBF1Buy Now

TME (2)

ProductStockPriceBuy
LT1171CQ#PBF41Buy Now
LT1171CT#PBF7Buy Now

Available Distributors without stock: 1

Buerklin (0)

ProductStockPriceBuy
LT1171CT-PBF0Buy Now

Available Distributors with stock: 0

no online Distributor with LT1171 stock available

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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