LT3970 Buck Converter overview

Description

Manufacturer
 
Category
Sub-Category

LT3970 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 1.21 V to 25.00 V output voltage.

It requires are a typical inductor size of 22.00 µH, a typical external component count of 8 and achieves a peak efficiency of 85 %. Further LT3970 characteristics are a adjustable 2200 kHz switching frequency and 2 available package option(s): MSOP-10 DFN-10 .

For the LT3970 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. 1.21 V
V-OUT max. 25.00 V
V-OUT adjustable 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. 8
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 Datasheet

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

LT3970

LT3970 Sample stock and distributor price breaks

LT3970 prices and online available distributors.

OEMSecrets.com
findchips.com

Available Distributors with stock: 0

no online Distributor with LT3970 stock available

Available Distributors with stock: 8

Arrow Electronics

ProductStockPriceBuy
LT3970EMS-5#TRPBF 2500
25002.98 $
Buy Now
LT3970IDDB-3.3#TRMPBF 355
5003.17 $
2503.29 $
1003.47 $
254.19 $
16.32 $
Buy Now
LT3970EDDB-5#TRMPBF 80
1002.86 $
13.36 $
Buy Now
LT3970IMS#PBF 62
10003.01 $
5003.13 $
2503.20 $
1003.24 $
254.08 $
16.15 $
Buy Now
LT3970EMS-3.3#PBF 45
10002.70 $
5002.81 $
2502.87 $
2002.91 $
Buy Now
LT3970EDDB-5#TRMPBF 0
5002.85 $
Buy Now
LT3970IDDB-3.3#TRMPBF 0
5003.13 $
Buy Now
LT3970HMS#TRPBF 0
25003.65 $
Buy Now
LT3970HMS-5#PBF 0
2003.55 $
Buy Now
LT3970IDDB-3.3#TRPBF 0
25003.17 $
Buy Now
LT3970HMS-3.3#TRPBF 0
25003.65 $
Buy Now
LT3970HMS#PBF 0
10003.28 $
5003.41 $
2503.50 $
2003.55 $
Buy Now
LT3970EDDB-5#TRPBF 0
25002.85 $
Buy Now
LT3970HMS-3.3#PBF 0
2003.55 $
Buy Now
LT3970IDDB-5#TRPBF 0
25002.94 $
Buy Now
show stock=0hide stock=0

Digi-Key

ProductStockPriceBuy
LT3970EMS-3.3#PBF 7663
5002.70 €
2502.76 €
1002.90 €
253.51 €
15.29 €
Buy Now
LT3970EDDB-3.3#TRMPBF 4876
2502.84 €
1002.99 €
253.62 €
15.45 €
Buy Now
LT3970EDDB-3.3#TRMPBF 4876
2502.84 €
1002.99 €
253.62 €
15.45 €
Buy Now
LT3970EMS#PBF 4842
5002.70 €
2502.76 €
1002.90 €
253.51 €
15.29 €
Buy Now
LT3970EDDB-3.3#TRMPBF 4500
5002.70 €
Buy Now
LT3970EMS-5#PBF 3749
5002.70 €
2502.76 €
1002.90 €
253.51 €
15.29 €
Buy Now
LT3970IDDB#TRMPBF 1804
2503.15 €
1003.32 €
254.01 €
16.05 €
Buy Now
LT3970IDDB#TRMPBF 1804
2503.15 €
1003.32 €
254.01 €
16.05 €
Buy Now
LT3970EDDB#TRMPBF 1535
2502.84 €
1002.99 €
253.62 €
15.45 €
Buy Now
LT3970EDDB#TRMPBF 1535
2502.84 €
1002.99 €
253.62 €
15.45 €
Buy Now
LT3970EDDB#TRMPBF 1500
5002.70 €
Buy Now
LT3970IDDB#TRMPBF 1500
5002.99 €
Buy Now
LT3970IDDB-3.3#TRMPBF 1460
2503.15 €
1003.32 €
254.01 €
16.05 €
Buy Now
LT3970IDDB-3.3#TRMPBF 1460
2503.15 €
1003.32 €
254.01 €
16.05 €
Buy Now
LT3970IDDB-3.3#TRMPBF 1000
5002.99 €
Buy Now

Verical

ProductStockPriceBuy
LT3970IMS#PBF 5400
2003.26 $
Buy Now
LT3970EMS#TRPBF 2625
5002.98 $
2503.05 $
1003.21 $
253.88 $
35.84 $
Buy Now
LT3970IMS#TRPBF 2500
25003.32 $
Buy Now
LT3970EMS-5#PBF 1000
2002.92 $
Buy Now
LT3970IMS#PBF 864
1003.36 $
253.86 $
35.82 $
Buy Now
LT3970EMS#PBF 612
1003.02 $
253.47 $
45.23 $
Buy Now
LT3970IMS-5#PBF 400
13.82 $
Buy Now
LT3970EMS#PBF 330
10002.70 $
5002.81 $
2502.87 $
1002.91 $
253.66 $
35.52 $
Buy Now
LT3970EMS-5#PBF 212
10002.70 $
5002.81 $
2502.87 $
1002.91 $
253.66 $
35.52 $
Buy Now
LT3970HMS-5#PBF 200
14.17 $
Buy Now
LT3970IMS-5#PBF 150
1003.60 $
503.70 $
253.81 $
33.93 $
Buy Now
LT3970IMS#PBF 62
10003.01 $
5003.13 $
2503.20 $
1003.24 $
254.08 $
26.15 $
Buy Now
LT3970EMS-5#PBF 51
13.43 $
Buy Now
LT3970EMS#PBF 50
1002.92 $
503.47 $
Buy Now
LT3970HMS-5#PBF 3
34.29 $
Buy Now

Mouser Electronics

ProductStockPriceBuy
LT3970IMS#PBF 789
16.47 $
254.29 $
1003.55 $
2503.37 $
5003.29 $
10003.17 $
Buy Now
LT3970IDDB-5#TRPBF 2498
16.51 $
254.32 $
1003.57 $
2503.39 $
5003.31 $
25003.09 $
Buy Now
LT3970EMS-3.3#PBF 696
15.81 $
253.85 $
1003.18 $
2503.02 $
5002.96 $
10002.84 $
Buy Now
LT3970EDDB-3.3#TRMPBF 1082
15.98 $
253.97 $
1003.28 $
2503.11 $
5002.84 $
15002.77 $
Buy Now
LT3970EMS#PBF 1289
15.81 $
253.85 $
1003.18 $
2503.02 $
5002.96 $
10002.84 $
Buy Now
LT3970EDDB#TRMPBF 2288
15.98 $
253.97 $
1003.28 $
2503.11 $
5002.84 $
15002.77 $
Buy Now
LT3970IDDB#TRMPBF 446
16.64 $
254.40 $
1003.64 $
2503.46 $
5003.15 $
15003.08 $
Buy Now
LT3970EMS-5#PBF 146
15.81 $
253.85 $
1003.18 $
2503.02 $
5002.96 $
10002.84 $
Buy Now
LT3970IMS-3.3#PBF 316
16.47 $
254.29 $
1003.55 $
2503.37 $
5003.29 $
10003.17 $
Buy Now
LT3970HMS#PBF 294
17.05 $
254.68 $
1003.87 $
2503.68 $
5003.59 $
10003.45 $
Buy Now

Quest Components

ProductStockPriceBuy
LT3970EMS#PBF 2
34.40 $
16.60 $
Buy Now
LT3970IDDB#PBF 2
24.70 $
17.05 $
Buy Now
LT3970IMS#3HTPBF 1100
10922.63 $
6682.75 $
17.50 $
Buy Now

RS Components

ProductStockPriceBuy
LT3970EMS-5#PBF 28
263.72 GBP
23.97 GBP
Buy Now
LT3970EMS-5#PBF 136
263.72 GBP
Buy Now
LT3970EMS#PBF 145
253.95 GBP
104.64 GBP
Buy Now
LT3970EMS#PBF 38
253.95 GBP
104.64 GBP
15.34 GBP
Buy Now
LT3970EMS-3.3#PBF 194
263.71 GBP
Buy Now

Transfer Multisort Elektronik

ProductStockPriceBuy
LT3970EMS#PBF 40
254.94 $
105.70 $
36.46 $
17.00 $
Buy Now

Chip1Stop

ProductStockPriceBuy
LT3970IMS#PBF 60
503.54 $
104.53 $
15.33 $
Buy Now
LT3970EMS-5#PBF 220
2003.12 $
503.33 $
104.44 $
15.22 $
Buy Now
LT3970EMS#PBF 2
12.27 $
Buy Now
LT3970IMS-5#PBF 10
105.50 $
16.46 $
Buy Now

Available Distributors without stock: 2

element14 Asia-Pacific

ProductStockPriceBuy
LT3970EDDB-3.3#PBF 0
1004.96 SGD
255.76 SGD
18.27 SGD
Buy Now
LT3970EMS-3.3#PBF 0
5004.48 SGD
2504.59 SGD
1004.83 SGD
255.84 SGD
18.78 SGD
Buy Now
LT3970EMS-5#PBF 0
5004.48 SGD
2504.59 SGD
1004.83 SGD
255.84 SGD
18.78 SGD
Buy Now

Farnell element14

ProductStockPriceBuy
LT3970HMS#PBF 0
5002.80 GBP
2502.91 GBP
1003.00 GBP
503.11 GBP
253.20 GBP
104.53 GBP
15.28 GBP
Buy Now
LT3970EMS-5#PBF 0
5002.31 GBP
2502.39 GBP
1002.48 GBP
502.55 GBP
252.64 GBP
103.73 GBP
14.38 GBP
Buy Now
LT3970EDDB-3.3#PBF 0
5002.45 GBP
2502.51 GBP
1002.57 GBP
502.70 GBP
252.83 GBP
103.72 GBP
14.32 GBP
Buy Now
LT3970EMS-3.3#PBF 0
5002.40 GBP
2502.47 GBP
1002.52 GBP
502.58 GBP
252.64 GBP
103.71 GBP
14.38 GBP
Buy Now

List of equivalents and alternatives

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

Variation Compare Product Manufacturer Package
0% LT3990 LT3990 product overviewLT3990 product overview Linear Technology DFN-10, MSOP-16
0% LM46000 LM46000 product overviewLM46000 product overview Texas Instruments HTSSOP-16
0% LM46000-Q1 LM46000-Q1 product overviewLM46000-Q1 product overview Texas Instruments HTSSOP-16
10% LM43600 LM43600 product overviewLM43600 product overview Texas Instruments HTSSOP-16
10% LM43600-Q1 LM43600-Q1 product overviewLM43600-Q1 product overview Texas Instruments HTSSOP-16

Inductor suggestions

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

V-IN max. 40 V, I-OUT 0.35 A, V-OUT min. 1.21 V, Frequency typ. 2200 kHz
Order Code Spec L (µH) IR (A) ISAT (A) RDC (mΩ) L x W x H (mm)
744028004 4.7 0.9 0.7 265.00 2.8 x 2.8 x 1.2
744029004 4.7 1.0 0.8 170.00 2.8 x 2.8 x 1.5
744030004 4.7 0.5 0.5 252.00 3.3 x 3.5 x 1.05
744031004 4.7 1.2 0.9 90.00 3.8 x 3.8 x 1.8
74479888247 4.7 1.0 0.7 380.00 2.5 x 2 x 1
74479889247 4.7 0.9 0.9 400.00 2.5 x 2 x 1.2
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