LT3970-3.3 Buck Converter overview

Description

Manufacturer
 
Category
Sub-Category

LT3970-3.3 is a 40.00 V sync Buck Converter from with 0.35 A output current. The maximum 40.00 V input voltage can be regulated down into a 3.30 V to 3.30 V output voltage.

It requires are a typical inductor size of 22.00 µH, a typical external component count of 6 and achieves a peak efficiency of 85 %. Further LT3970-3.3 characteristics are a adjustable 2200 kHz switching frequency and 2 available package option(s): MSOP-10 DFN-10 .

For the LT3970-3.3 replacement search, please 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. 4.20 V
V-IN max. 40.00 V
I-OUT? 0.35 A
V-OUT min. 3.30 V
V-OUT max. 3.30 V
V-OUT 3.300 V
V-OUT programmable no
sync/non-sync sync
Frequency typ. 2200 kHz
Frequency adjustable
Frequency selectable
ext.clock sync. no
Frequency adj./ ext.clock min. 200 kHz
Frequency adj./ ext.clock max 2250 kHz
Softstart no
Softstart adjustable no
Tracking no
PG/Power OK yes
Quiescent current max. 3.5 µA
Operating min.
Operating max.
Junction min. -40 °C
Junction max. 125 °C
thermal shutdown typ.
Inductor size typ. 22.00 µH
Inductor suggested by Würth Elektronik
Automotive AEC-Q100 no
Light-Load-Mode yes
Topology Buck
Peak Efficiency 85 %
Component count min. 6
current limit adjustable no
Nr.of packages 2
CSP
SC70
SOT
MSOP MSOP-10
QFN/DFN DFN-10
SO/SOIC
SOP
DIP
TO
DDPAK

LT3970-3.3 Datasheet

Link to the most up-to-date LT3970-3.3 datasheet and the product page for EVM, tools and support information.

LT3970-3.3

LT3970-3.3 Sample stock and distributor price breaks

LT3970-3.3 prices and online available distributors.

OEMSecrets.com
findchips.com

Available Distributors with stock: 7

ARROW-NAC (6)

ProductStockPriceBuy
LT3970IDDB-5#TRMPBF77
13.73 USD
1003.17 USD
Buy Now
LT3970IMS#PBF863
13.82 USD
1003.24 USD
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LT3970EDDB#TRMPBF530
13.36 USD
1002.85 USD
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LT3970EDDB-3.3#TRMPBF500
5002.85 USD
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LT3970EDDB-3.3#TRMPBF68
13.36 USD
1002.85 USD
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LT3970EMS-3.3#PBF53
13.43 USD
1002.91 USD
Buy Now

Chip-One-Stop (14)

ProductStockPriceBuy
LT3970EDDB-3.3#TRMPBF454
17.16 USD
105.66 USD
255.39 USD
504.93 USD
1004.56 USD
2004.38 USD
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LT3970EDDB#TRMPBF290
16.97 USD
105.50 USD
255.25 USD
504.81 USD
1004.44 USD
2004.26 USD
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LT3970EDDB#TRMPBF290
16.97 USD
105.50 USD
255.25 USD
504.81 USD
1004.44 USD
2004.26 USD
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LT3970EMS-3.3#PBF160
15.23 USD
104.40 USD
254.35 USD
504.15 USD
1004.05 USD
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LT3970EMS-5#PBF360
13.39 USD
102.82 USD
502.62 USD
1002.59 USD
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LT3970EMS-5#PBF360
13.39 USD
102.82 USD
502.62 USD
1002.59 USD
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LT3970EMS#PBF48
14.38 USD
103.31 USD
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LT3970EMS#PBF206
15.57 USD
104.68 USD
254.63 USD
504.42 USD
1004.31 USD
2004.11 USD
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LT3970IDDB-3.3#TRMPBF269
17.47 USD
105.90 USD
255.63 USD
505.15 USD
1004.76 USD
2004.57 USD
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LT3970IDDB-5#TRMPBF275
17.47 USD
105.90 USD
255.63 USD
505.15 USD
1004.76 USD
2004.57 USD
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LT3970IDDB#TRMPBF2
16.29 USD
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LT3970IMS-3.3#PBF160
17.65 USD
106.04 USD
255.76 USD
505.27 USD
1004.88 USD
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LT3970IMS#PBF40
14.86 USD
103.98 USD
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LT3970IMS#PBF940
15.83 USD
104.91 USD
254.85 USD
504.63 USD
1004.52 USD
2004.31 USD
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DIGI-KEY (16)

ProductStockPriceBuy
LT3970EDDB#TRMPBF2500
5002.85 USD
Buy Now
LT3970EDDB#TRMPBF2890
15.74 USD
255.13 USD
1003.42 USD
2503.14 USD
Buy Now
LT3970EDDB#TRMPBF2890
15.74 USD
255.13 USD
1003.42 USD
2503.14 USD
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LT3970IDDB#TRMPBF1000
5003.17 USD
Buy Now
LT3970IDDB#TRMPBF1518
16.36 USD
255.68 USD
1003.80 USD
2503.49 USD
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LT3970IDDB#TRMPBF1518
16.36 USD
255.68 USD
1003.80 USD
2503.49 USD
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LT3970EMS#PBF6070
15.13 USD
253.43 USD
1002.91 USD
Buy Now
LT3970EMS-3.3#PBF2785
15.13 USD
253.43 USD
1002.91 USD
Buy Now
LT3970EMS-5#PBF1189
15.13 USD
253.43 USD
1002.91 USD
Buy Now
LT3970IMS-3.3#PBF605
15.70 USD
253.82 USD
1003.24 USD
Buy Now
LT3970IMS#PBF429
15.70 USD
253.82 USD
1003.24 USD
Buy Now
LT3970HMS#PBF409
16.23 USD
254.17 USD
1003.55 USD
Buy Now
LT3970EDDB-3.3#TRMPBF0
5002.85 USD
Buy Now
LT3970EDDB-3.3#TRMPBF168
15.74 USD
255.13 USD
1003.42 USD
2503.14 USD
Buy Now
LT3970EDDB-3.3#TRMPBF168
15.74 USD
255.13 USD
1003.42 USD
2503.14 USD
Buy Now
LT3970IDDB-3.3#TRMPBF0
5003.17 USD
Buy Now
LT3970IDDB-3.3#TRMPBF4
16.36 USD
255.68 USD
1003.80 USD
2503.49 USD
Buy Now
LT3970IDDB-3.3#TRMPBF4
16.36 USD
255.68 USD
1003.80 USD
2503.49 USD
Buy Now
LT3970EDDB#TRPBF0
25002.85 USD
Buy Now
LT3970EDDB-3.3#TRPBF0
25002.85 USD
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LT3970EDDB-5#TRMPBF0
5002.85 USD
Buy Now
LT3970EDDB-5#TRPBF0
25002.85 USD
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LT3970EDDB-3.42#TRMPBF0
5002.85 USD
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LT3970EDDB-3.42#TRPBF0
25002.85 USD
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LT3970EMS#TRPBF0
25003.00 USD
Buy Now

Element14 (3)

ProductStockPriceBuy
LT3970EDDB-3.3#PBF278
18.12 USD
255.66 USD
1005.50 USD
Buy Now
LT3970EMS-3.3#PBF0
18.20 USD
255.48 USD
1004.65 USD
Buy Now
LT3970EMS-5#PBF75
18.20 USD
255.48 USD
1004.65 USD
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LT3970HMS#PBF58
19.95 USD
256.67 USD
1005.68 USD
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FARNELL-ELEMENT14 (4)

ProductStockPriceBuy
LT3970EDDB-3.3#PBF278Buy Now
LT3970EMS-3.3#PBF10Buy Now
LT3970EMS-5#PBF123Buy Now
LT3970HMS#PBF58Buy Now

RS-COMPONENTS (4)

ProductStockPriceBuy
LT3970EDDB-3.3#TRMPBF264Buy Now
LT3970EMS-5#PBF50Buy Now
LT3970EMS#PBF64Buy Now
LT3970IMS#PBF30Buy Now

TME (1)

ProductStockPriceBuy
LT3970EMS#PBF56Buy Now

Available Distributors without stock: 1

NEWARK (0)

ProductStockPriceBuy
LT3970EDDB-3.3#PBF0
15.13 USD
253.42 USD
1002.85 USD
Buy Now
LT3970EDDB-3.3#TRMPBF0
13.99 USD
5002.85 USD
Buy Now
LT3970EDDB-3.42#PBF0
15.97 USD
1004.88 USD
2504.48 USD
5004.16 USD
10003.91 USD
Buy Now
LT3970EDDB-5#PBF0
15.13 USD
253.42 USD
1002.85 USD
Buy Now
LT3970EDDB-5#TRMPBF0
13.99 USD
5002.85 USD
Buy Now
LT3970EDDB#PBF0
15.13 USD
253.42 USD
1002.85 USD
Buy Now
LT3970EDDB#TRMPBF0
13.99 USD
5002.85 USD
Buy Now
LT3970EDDB#TRPBF0
14.22 USD
25003.03 USD
Buy Now
LT3970EMS-3.3#PBF0
15.13 USD
253.44 USD
1002.91 USD
Buy Now
LT3970EMS-3.3#TRPBF0
14.98 USD
25003.57 USD
Buy Now
LT3970EMS-5#PBF0
15.13 USD
253.44 USD
1002.91 USD
Buy Now
LT3970EMS-5#TRPBF0
14.98 USD
25003.57 USD
Buy Now
LT3970EMS#PBF0
15.13 USD
253.44 USD
1002.91 USD
Buy Now
LT3970EMS#TRPBF0
14.44 USD
25003.18 USD
Buy Now
LT3970HMS#PBF0
16.25 USD
254.19 USD
1003.55 USD
Buy Now
LT3970IDDB-3.3#PBF0
15.65 USD
253.78 USD
1003.17 USD
Buy Now
LT3970IDDB-5#PBF0
15.65 USD
253.78 USD
1003.17 USD
Buy Now
LT3970IDDB-5#TRMPBF0
14.44 USD
5003.17 USD
Buy Now
LT3970IDDB#PBF0
15.65 USD
253.78 USD
1003.17 USD
Buy Now
LT3970IDDB#TRMPBF0
14.44 USD
5003.17 USD
Buy Now
LT3970IMS-5#TRPBF0
15.54 USD
25003.98 USD
Buy Now
LT3970IMS#PBF0
15.71 USD
253.83 USD
1003.24 USD
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LT3970IMS#TRPBF0
14.93 USD
25003.53 USD
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Available Distributors with stock: 0

no online Distributor with LT3970 stock available

List of equivalents and alternatives

The following DC/DC Buck Converter are similar to LT3970-3.3. Optional, compare LT3970-3.3 side-by-side with other Buck Converter via the Comparison function.

Variation Compare Product Manufacturer Package
0% LT3990-3.3 LT3990-3.3 product overviewLT3990-3.3 product overview Linear Technology MSOP-16

Inductor suggestions

Below you can find matching inductors from Wuerth Elektronik calculated on the maximum parameters of LT3970-3.3.

V-IN max. 40 V, I-OUT 0.35 A, V-OUT min. 3.3 V, Frequency typ. 2200 kHz
Order Code Spec L (µH) IR (A) ISAT (A) RDC (mΩ) L x W x H (mm)
744029100 10.0 0.7 0.5 390.00 2.8 x 2.8 x 1.5
744031100 10.0 0.7 0.6 185.00 3.8 x 3.8 x 1.8
744032008 8.2 0.4 1.0 360.00 3.2 x 2.5 x 2.3
74404024100 10.0 0.5 0.9 435.00 2.5 x 2 x 1.2
74404032100 10.0 0.8 0.9 230.00 3 x 3 x 1.5
74404041100 10.0 1.3 1.0 168.00 4 x 4 x 1.2
744042100 10.0 1.3 1.0 120.00 4.8 x 4.8 x 2
744042120 12.0 1.2 1.0 150.00 4.8 x 4.8 x 2
744043100 10.0 1.2 1.0 95.00 4.8 x 4.8 x 3
744043120 12.0 1.1 1.0 100.00 4.8 x 4.8 x 3
7440680100 10.0 1.2 1.0 177.00 8 x 8 x 1.2
7440680120 12.0 1.2 1.0 195.00 8 x 8 x 1.2
74479889310 10.0 0.8 0.5 500.00 2.5 x 2 x 1.2
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